avk safety valve testing in stock

relief valve industry. This vast knowledge, coupled with continuous customer input, allows AVK to provide the first in-line pressure relief valve testing devices designed specifically with you in

with your specific application, and make the testing of pressure relief valves a cost effective way of ensuring plant safety with the utmost in flexibility.

A very critical aspect of inline testing is the accuracy of effective seat areas that are used in calculating set point, our products have been proven by comparative live testing and empirical

analysis through many years.  Our Nuclear software has passed V & V certification.  Our products have been independently verified for accuracy by major valve manufacturers and

Safety valves are used in a variety of applications, including air/gas, vapor, steam and liquid service.  Flotech has been approved by the National Board of Boiler and Pressure Vessel Inspectors to perform safety and relief valve testing, repair and certification.

Our valve experts will focus on getting your valves tested, repaired and quickly set to the exact specifications.  We evaluate the repair condition of every valve and will recommend the right solution to manage your maintenance program.

Using the data acquired through system transducers, the AVK consistently and accurately verifies valve set pressure. The portable device includes a small actuator assembly that is mounted to the valve. A custom-designed adapter with sensor applies force to the valve spindle to determine set pressure. The test results can then be printed or downloaded to other applications.

We also provide in place testing at your facility or factory to minimize down time. Mec-Tric’s in place testing equipment allows for diagnosis of valves operating correctly and repair of valves not meeting specifications. This helps eliminate customer down time and limits the amount of valves customers must maintain in stock.

The A.V.K. UltraStar LFM is an in-line pressure relief valve testing device (also commonly referred to as an A.L.D., auxiliary lift device). Its primary function is to verify the set pressure of pressure-relief valves in-line. With the in-line testing of valves, the costly and time-consuming job of valve removal and reinstallation is eliminated. Only those valves failing the test need to be scheduled for repair during system scheduled shutdown. Using the data acquired through system transducers, the UltraStar LFM provides a consistent and accurate valve set pressure.

The UltraStar LFM design includes a hydraulic actuator assembly that is mounted to the valve. A custom-designed robotic gripper-arm applies force to the valve spindle to determine set pressure.

In the event of an over-pressure condition, the UltraStar LFM does not hamper the normal operation of the valve regardless of the testing phase currently in progress. An additional feature provides for the controlled re-closing of the valve, preventing disk collapse and damage to the valve spindle.

Ensure compliance, prevent overpressure and protect downstream equipment with industry regulated repairs for Section I & Section VIII Pressure and Safety Relief Valves. We offer rapid response and delivery times to minimize plant downtime while maximizing valve performance. We service all major makes and manufacturers for emergency, maintenance and scheduled outage needs. We also repair and replace conservation, tank and vacuum vents. Contact our sales team today to receive a quotation to repair, test or replace your safety relief valves.

Valsource is certified by The National Board of Boiler and Pressure Vessel Inspectors to repair and test Section I and Section VIII Pressure relief and Safety Relief Valves. Every valve is repaired to standards set by The National Board’s VR program. We provide 24/7 repair, testing and engineering services. We also maintain an extensive inventory and can provide replacement valves and parts with same day delivery options.

Valsource provides 24/7 repair and testing services in our shop or in the field. Our valve program allows our technicians to repair, remove, install and test your pressure relief and safety relief valves on-site. Using our AVK Electronic Test Vessel Package, our technicians are able to accurately test safety relief valves on-site without removing them from line. The primary function is to verify the set pressure in-line without having to shut down a system or unit. This service is a sure way to guarantee minimal downtime and peak valve performance. If you are preparing to service your boiler, Valsource technicians will come to your site and test each main steam safety valve to determine which valves require service. We will perform the repairs in-house or on-site using our 53’ field machining trailer, install and re-test back to calibrated set points.

If you need the best in valve repair and remanufacturing, Valsource can deliver the right options for your company. We offer rapid response times and emergency repair services available to resolve unplanned outages quickly. Our experienced technicians look forward to working with you to determine the most effective solutions for your valve repair needs.

New Valve Automation – With our relationships with many factories, TVI can build automation packages to supply your needs. Packages can include supporting documentation and asset tracking.

New Relief Valve and VR Repair – With three National Board and ASME certified repair locations, we have the personnel and equipment to repair all of your relief valves in our facilities. All of our VR repairs follow our quality process that has been approved by the National Board.

Non-Code Relief Valve Repair – TVI has expertise in refurbishing conservation vents and, flame arrestors, and other equipment. Although not governed by the National Board, our repair process follows a stringent standard to bring valves back to a like-new condition.

Gate, Globe, Check Valves – TVI has the in house capabilities of repairing manual valves in excess of 72″. This includes repair, replacement of parts, and hydro-testing.

Automated Valve Repair – Do you have valves that need to be automated? Bring them to TVI. We have the in-house knowledge to properly size any valve and can build brackets and couplings. In addition, TVI can rebuild any control valve or automated valve package. TVI only uses factory parts in all repairs – ensuring your valves will be returned to you in the best condition possible.

Welded In Relief Valves – Valve repair trailers has expanded TVI’s support of customers to include many areas of on-site maintenance and repair. TVI has the tools to repair any relief valve that’s welded in place. We can come onsite and pre-test valves as well as repair in place.

On-Site Relief Valve Repair – TVI can bring a mobile repair facility to your location. This can reduce the turnaround time on valves by eliminating the drive time to a shop. Our team of valve technicians have years of experience working on all brands of relief valves.

Field Machining – TVI has the tools and expertise to field machine most parts within manufacturer’s recommended tolerances reducing the need to return to a shop to complete valve repairs. This capability greatly reduces repair time for customers.

Welded in Valve Repair – TVI’s team is trained to repair any type of valve welded in place or flanged valves where customers would prefer a repair in place rather than valve removal. This includes pressure seal valves, Orbit valves, as well as gate, globe and check valves.

On-Site Valve Repair – TVI’s mobile trailer contains fixed equipment as well as mobile equipment to inspect, repair, and test valves at a customer’s location.

High Pressure Repairs – TVI maintains AVK equipment for applications involving high pressure to ensure your valves are set properly without damaging valve components.

Farris – IPrism – Farris has worked with OSHA and a number of customers to develop an all-encompassing software package to manage the safety of all items within a plant.

Valve Automation – Are you looking to stock components for valve automation?  TVI can help raionalize the components you keep on the shelf to ensure you have the right products to automate all of your processes.  TVI’s secure extranet web application can catalog your valve automation packages by serial number, showing all the details of each package purchased, ensuring your replacement automation package is a duplicate of the last order.

Relief Valves – TVI’s valve tracking software can provide details on all of the repair process of each valve including repair history, parts replaced, and parts to replace at the next service.

Relief Valve Sizing – TVI uses Farris’ Sizemaster software to validate new valves in applications.  This software not only sizes valves based on volume or mass flow, and steam, but also can be used for two-phase flow. This software can be installed at customers’ locations either in a stand alone or network environment.  TVI and Farris provides factory and on-site training for the use of this software.  TVI provides sizing and validation sheets for all customers for all applications as requested at no charge.

Valve Automation Sizing – Manu suppliers offer actuator sizing software to ensure actuators are properly sized for each application.  TVI can either size actuators for applications and provide data sheets or provide access to to the software for customers.

ISB is a National Board Certified VR repair facility. Electronic AVK testing allows us to test on-site without having to shut down your facility. We can overhaul and test safety valves on and offsite.

One-Piece BallAVK’s unique one-piece Ductile Iron EPDM rubber encapsulated ball offers superior flow with head loss less than 2.5psi at 1000 gallons per minute.

Dual PurposeThe AVK FlowGuard dual purpose design offers protection in both directions. During normal operation the FlowGuard is designed to prevent backflow and cross-contamination.

ABBEY ROGERS offers a lift assist device that allows for the testing of safety relief valves while still in line, and operational. The AVK is an electro-hydraulic computerized testing unit that when connected to the valve records the pressure at which the valve lifts. The AVK connects to the stem of the safety valve and measures the vertical forces exerted by the spring and load train of the valve. These tests are preformed while your system is under pressure, therefore no loss of production due to removing safety relief valves. The documentation provided will satisfy ASME & Insurance inspectors.

Valve requirements for the AVK are the following: pressure under the valve, must be flanged, must be at least a 21" clearance above the valve, service must be non-liquid, and non-hazardous vapors. The AVK is ideal for testing valves in place which will determine which valves need to be pulled out of service for repair, and which can remain inline through another cycle. The AVK will reduce manpower and downtime expenses.

At each of our 12 convenient locations, the Chalmers & Kubeck Valve and Actuation Technicians are factory trained and certified. Each expert Technician is required to meet stringent factory standards prior certification so you can be confident that we will provide the expert, efficient, and comprehensive service that you expect.

Our services include field trouble shooting, actuator refurbishment, control enhancement, electronic valve testing, torque verification, turnkey overhauls / repairs, retrofits, and valve testing / certification. We offer complete reconditioning of ball valves, butterfly valves, check valves, control valves, gate valves, globe valves, parallel slide valves, pilot operated valves, plug valves, pressure relief valves, pressure safety valves, vacuum break valves, and other specialty valves.

Baker Hughes manufactures the premier boiler safety valves and pressure relief valves in the industry, Consolidated®, and authorizes a very select group of companies to be their exclusive factory authorized repair and service centers, known as Green Tag Centers® (GTC). Ten of the 12 C&K Service Locations are GTCs, which means that you will receive best-in-class aftermarket product support. With our OEM trained and certified valve technicians, you know that your relief valves will be rebuilt correctly to exacting standards. Prior to certification, each of our valve technicians must go through Baker Hughes classroom training that includes applicable codes and standards, proprietary repair procedures, and practical hands-on instruction. The technician must prove their proficiency during both written and practical examinations covering relief valve repair, assembly, and testing. With our certified Green Tag Technicians, you can rest assured that your valves will be serviced in compliance with ASME and NBBI (National Board of Boiler and Pressure Vessel Inspectors) standards so they perform their critical safety function as intended.

Each of our GTC service locations has compete machining capabilities, calibrated measuring and testing equipment, specialized electronic valve testing equipment, and ValvKeep, a proprietary electronic data management system, so you can track and trend the repair history of your valves. We also carry significant inventory of Consolidated pressure relief valves and OEM certified replacement parts ensuring rapid response to your urgent repair needs. If for some reason we don’t have a part in stock locally, we have access to all parts stocked by GTCs throughout the entire United States and can have them overnight shipped to one of our service centers. We are your trusted local pressure relief valve service center whether your valves are Consolidated or another manufacturer’s brand.

Since the first installation of its Limitorque Machine (limit & torque capable) in 1929, Limitorque has been manufacturing some of the most innovative and dependable motor-operated valve actuators for demanding industrial applications.  Flowserve, the parent company of Limitorque, authorizes a select group of companies to be their “Limitorque Blue Ribbon” service and repair centers.  Chalmers & Kubeck is proud to be the largest Limitorque Distributor east of the Mississippi River and that all twelve (12) of our locations are Limitorque Blue Ribbon Service Centers.  With over 20 years  providing outstanding Blue Ribbon Service, C&K is your go-to solution for actuator sizing, selection, adaptation, installation / certification, maintenance, repair, and field service.

This team of valve and instrument specialists works closely together to provide customer assistance in technical sales, quotations and delivery. Chalmers & Kubeck maintains around-the -clock service, which includes the assembly and test of new CONSOLIDATED® pressure relief valves, plus full machining and repair operations for industrial valves of many types and manufacturers. Additionally, C&K provides comprehensive design and manufacturing services to adapt your existing manual valve or a new manual valve to a motor operated actuator for enhanced process control and operator safety.

AVK gate valves are designed with built-in safety in every detail. The wedge is fully vulcanized with AVK’s own EPDM rubber compound with NSF drinking water approval. It features an outstanding durability due to the ability of the rubber to regain its original shape, the double bonding vulcanization process and the sturdy wedge design. The triple stem seal system, the high strength stem and the thorough corrosion protection safeguard the unmatched reliability.

The Power-to-X technologies are still quite new, and still there are no standards regarding this. Most manufacturers of valves will follow the ASME B31.12 standard for hydrogen in distribution networks, but there are no standards for tests of valves used for hydrogen.

Therefore, in collaboration with FORCE Technology, we have developed special tests to simulate the long-term effects of hydrogen. FORCE Technology has specialized knowledge within this field, and they have access to test facilities established in cooperation with Danish Gas Technology Centre, DGC. It takes a lot of safety precautions to perform tests with hydrogen, as it is a very combustible gas, and furthermore, the valves need to be tested under pressure.

We have developed two comprehensive tests. A functionality test that simulates the full lifetime and a burst test that exposes the valves for increased pressure until they burst.

Test results show that AVK valves can withstand the effects of hydrogen. Thus, they can therefore be used as components in the gas networks used for transport of hydrogen.

AVK is the first company in Denmark to test valves for hydrogen. By being first-mover and contributing to development of tests within this field, we will have a great advantage when it comes to servicing our customers and their needs in their transition to green energy and the fast-growing Power-to-X technologies.

In today’s world, with the automation technology available, human error can be significantly reduced. Valve service and repair within the valve industry is no exception.

Designed with the valve technician in mind, The AccuTEST offers many competitive advantages including: ease of use, modern software, portability of equipment, and repeatability of results regardless of which technician conducts the test.

In today’s world, with the automation technology available, human error can be significantly reduced. Valve service and repair within the valve industry is no exception.

Designed with the valve technician in mind, The AccuTEST offers many competitive advantages including: ease of use, modern software, portability of equipment, and repeatability of results regardless of which technician conducts the test.

The old way of pressure relief valve testing could be summarized in one word: downtime. First, the plant went down, then valves were disassembled, and finally, the valves were transported offsite for testing. Time-consuming. Costly. High risk. But using the AccuTEST System, pressure relief valve testing comes to you, right where the valves actually operate. Time saver. Cheaper. Lower risk.

The AccuTEST System is a recognized leader in the valve service and repair industry. Why? Think fully automated one-touch testing for ease of use and repeatable results. It’s compact and portable to reduce the load of pressure relief valve technicians. Ongoing product enhancement based on technicians’ input. And we offer responsive technical support, anytime, directly from our engineers – not from a third-party representative.

The AccuTEST System is an recognized leader in the valve service and repair industry. Why? Think fully automated one-touch testing for ease of use and repeatable results. It’s compact and portable to reduce the load of safety valve technicians. Ongoing product enhancement based on technicians’ input. And we offer responsive technical support, anytime, directly from our engineers – not from a third-party representative.

Unsurpassed for accuracy, reliability and safety, the advanced technology of AccuTEST was developed to test safety valves while in position, under a full load, for consistently superior, reproducible results.

Unsurpassed for accuracy, reliability and safety, the advanced technology of AccuTEST was developed to test safety valves while in position, under a full load, for consistently superior, reproducible results.

ASME Sec. I, Power Boilers, Para. 73.4.2, has requirements for Safety Valve Testing. "Trevitest" is one of many lift assist devices accepted by ASME as an alternative to live steam overpressurization on the boiler.

Live steam testing requires raising the pressure in the boiler above the Maximum Allowable Working Pressure of the Boiler while at the same time gagging (rendering inoperable) most of the Safety Valves an the boiler. So, obviously, there is an element of danger in the process. Additionally, the personnel who have to gag and ungag the valves, as well as make adjustments to the valves, are exposed to high pressures and temperatures.

Speaking from experience, I have had my hard hat blown off and my safety glasses imbedded with particles of rust, not to mention burns to my forehead, when a safety valve lifted while I was adjusting it. I have also gotten overheated more than once on a Boiler and suffered from vertigo.

I know a few countries in South America which still require live testing, but most utilities in the USA now use a Lift Assist Device such as Trevitest, EVT, AVK, etc.

Live Steam Testing on the Boiler is the standard for testing against which all other methods are measured, whether Test Bench, restricted lift or lift assist.

To expand on the subject of Live Steam Testing versus Lift Assist Devices, there was once a big difference between the two methods regarding blowdown or reseat pressure. Until the latest edition of ASME Sec. I, there was a requirement for demonstration of blowdown. Even personnel with the required specialized training often had problems adjusting blowdown. This meant mutiple lifts of the Boiler Safety Valves. In turn, multiple lift increased the chances of damage to the Safety Valve Seating (sealing) surfaces. The lift assist was developed to determine set pressure without fully lifting the safety valve. The lift assist cannot determine full lift or reseat. Recently, however, the ASME Sec. I Committee determined that reseat pressure was not as critical as had been previously thought. Therefore, they removed the requirement for testing/adjusting the blowdown. This makes the lift assist device more acceptable as a comparison to live steam testing than in past years.

After checking ASME Sec. I, Power Boilers, Para. PG-73.4.2, it seems a requirement for initial installation of safety valve. However, does the code mention the timing and interval of online testing? Should we implement online test every year?

The NBIC is a post construction code which recommends timing and interval of online testing? You should implement online test every year for Sec. I Drum & Superheat Valves unless your jurisdiction will allow longer interval.

The requirements in ASME Sec. VII, Subsection C4 Appurtenances, C4.130 refers to either offline test or online test. Either way is acceptable. SOme Drum & Superheat Valves are welded in line (must be tested in line).

The differences among Trevitest, EVT and AVK are primarily cosmetic. All systems use the same formula and same transducers to calculate set pressure. AVK throws in a random number which makes it impossible to check their calculations (Its purpose is to keep antone from stealing their technology, but they closed that door after the proverbial horse had already left the barn).

There are no major differences in any of the systems. EVT is Dresser and it is leased to their Reps. Trevitest is Furmanite and it is for sale, but very expensive. AVK is also expensive, but they do sell to consumers.

Same as your reply, ASME Sec. VII, Subsection C4 Appurtenances, C4.130 also recommend that the testing of safety valves should be performed at the time the boiler is being shut down for inspection. Actually some of our local plants also implemented in this way.

However, I think the purpose of valve online testing is to ensure the valve workable for future continues operation. So the online testing should be done before boiler starting long-term operation, not shutdown. Once a safety valve was dismantled and repaired, it should be tested online with steam again, I suppose.

You are correct about the testing needing to be performed prior to start of long run. The advice in ASME Sec. VII & NBIC RB-8410 are both ideal scenarios which do not give enough details. I started to go into this in my last comment. The best way to properly set, test & adjust a Safety Valve on a large boiler is to make adjustments to set pressure and blowdown as the boiler is coming off line because sometimes testing takes several pops (lifts) to get the adjustments correct. This can cause leakage to the valve from repeated lifting. Then the valve should be dismantled and repaired. During the repair the adjusting ring settings which control the blowdown should be noted and the rings returned to those positions prior to start up. The spring adjusting screw should also be returned to the as found position. Then when the boile ris back up to pressure and temperature is stabilized in the valve (typically 24 hrs running time) the valve should be tested with a Lift Assist Device. This prevents damage from full lifting, but verifies set.

The new ASME Sec. I rules which eliminated the Blowdown Adjustment requirements noe permit a user to simply place the rings per the Original Valve Manufacturer"s Specifications. So, Sec. VII should probably be revised to reflect the current procedure in ASME Sec. I.

AS for the pressure reading, most valve testing is done from the control room gauge/pressure transmitter. Not because of safety, but because there is no place to attach a test gauge in many systems. Drums & Superheat Lines especially are too hot to place a gauge in the line without some type syphon below the gauge sensing element.

Does the Trevitest actually render the PSV which is being tested "inoperative" or not? I understand from the below link that the Trevitest device restricts the valve from relieving fully and therefore the valve "has to be declared inoperative" (during the test).

The Trevitest may have a closing ram in order to push the stem down and reseat the valve should it lift and begin to chatter or blowdown extremely long and overheat. However, the closing ram is not typically used, and is often not even installed on the unit due to overhead clearance and other considerations. In any case, as long as the closing ram is not activated the Trevitest does not hinder the PSV from operating.

ASME Sec. I PG-73.4 is a requirement for Manufactures and Assemblers only. It spells out the conditions that allow the Manufacturer to attach the Code "V" stamp. Local Government or Insurer will often dictate the type of testing they will allow. Always check with them before you fully decide which way you are going to test.

TSV Service & Sales, a Division of TRIVACO, offers over 55 years of experience in the Industrial, Commercial and Institutional Industry as mechanical specialty sales engineers and application engineering.  As the “Factory Authorized Assembler” of Kunkle Relief Valves for the State of Indiana and western Kentucky. We provide Kunkle Safety Valves to Industrial Distributors and carry a local inventory of Kunkle Safety Valves that we can ship to you or drop ship to your customer.

Everyone is encouraged to call us and schedule a sales call to discuss our FREE survey of safety valves in your plant. This allows us to identify any relief valve installation problems and check to see if the valves are for the application and service. You will receive value from this service by addressing any potential safety issues proactively and not waiting until an unfortunate event occurs to act!

TSV also keeps record of manufacturer’s specifications for Kunkle Valve, Farris, Consolidated, Crosby and more to ensure the accuracy and quality of your valves.

We have certified our shop with The National Board and now hold the following code stamps; VR, UV, V and NB. This enables us to repair Kunkle Valve or ANY other manufacturer’s code stamped safety/relief valve, to new condition, right here in Indianapolis!

Everyone is encouraged to call us and schedule a sales call to discuss our FREE survey of safety valves in your plant. This allows us to identify any relief valve installation problems and check to see if the valves are for the application and service. You will receive value from this service by addressing any potential safety issues proactively and not waiting until an unfortunate event occurs.

AVK is dedicated to offering its customers the highest safety possible. Our products are part of complex systems handling vital processes every day, such as distribution of tap water and products for food industries, healthcare etc. To make sure that our products are up to the challenge we have a strict, consistent approach to product development, testing and approval. Within careful control, AVK products fulfil or exceed all international standards and

A strong, protective layer of coating is first of all important in order to maintain the high quality and functionality of the product. Furthermore, an AVK product should have no impact on the resources in direct contact with it, i.e. clean drinking water. Learn more about our product coating here, and how we manage to produce long-lasting quality products for quality processes.

AVK GUMMI A/S develops and produces all the rubber components used in our gate valves. The high-quality rubber is resistant to all types of chemicals used in water supply systems. All rubber components used in AVK products are tested under national and international standards. The production processes undergo regular testing, and all primary rubber components are marked and identifiable, enabling their full traceability. Learn more about AVK quality rubber here.

Presentation on theme: "Mec-Tric Control Company In Field Valve Testing on SRV’s with on process line AVK pressure device. MEC-TRIC."— Presentation transcript: