avk safety valve testing price

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

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.

vpl has put you on the right track. The Trevitest Device is one brand of Lift Assist Device (others include KISS, EVT, PVT AVK, Hydroset, SPIVOT). SOme are manufactured by Pressure Relief Valve Companies, others by Valve Repair Shops and some are third party vendors with PRV background. A Pressure Relief Valve typically uses a spring (Force S) to hold a movable sealing member (disc) closed on a fixed sealing member (nozzle) until the system pressure (Force P) overcomes the Spring and opens the PRV to relieve an overpressure situation. The PRV works on the simple principle that IF Force S > Force P THEN the PRV remains closed (Static Force Balance Principle). However, IF Force P > Force S THEN the PRV is Open.

The problem is that most Steam Power Generating Stations, whether Fossil or Nuclear, are such high pressure and under so much demand for electricity that they do want to take the time or liability to overpressure their boilers to test Safety Valve Set Pressure. Use of the Lift Assist Device is permitted by ASME Code (both Sec. I, Power Boilers, & Sec. VIII, Pressure Vessels) to determine the Set Pressure of a PRV (Safety, Safety-Relief or Relief Valve).

The Equipment Required is a Calibrated System Pressure Gauge, a Lift Assist Device with an adapter to connect to the PRV Stem, a Calibrated Load Cell to measure the Force Applied to the PRV Stem, a calculator or PC with a program to determine the Set Pressure from the input data and most importantly, a Valve Technician who knows PRV Terminology, and is familiar with the Test Equipment.

Breakable Ring, Water Loss and Cross Contamination Reduction Ball Valve for all AVK Wet barrel Hydrant. For water and neutral liquids to maximum 70oC.

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.

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.

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.

Testing valves for proper integrity management is key to reliable valve operation and managing a valve’s total cost of ownership. Custom Valve has in house and mobile field test stands. Each of these test stands is certified to the National Board VR program for shop and field. We can test on air, nitrogen, water, and steam on nearly every valve type. Here is a sampling of our test ranges and sizes.]

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.

AVK series 851 double orifice, triple action air valves are designed to allow air to rapidly either escape or enter the pipe system when filling or draining, as well as for automatic discharge of accumulated air during normal working conditions. The unique ‘Aerokinetic’ design allows air to rush out of the system at great speed without forcing the float upwards and closing it prematurely. This makes sure that the valve closes only after all air has left the system and water has entered the chamber.

AVK series 859 diaphragm actuated pressure sustaining control valves (PSV) automatically secure a minimum upstream pressure by reducing the flow if the upstream pressure drops below the setpoint.

Adjusting the setpoint above the usual operating pressure changes the function to pressure relief, where the valve automatically opens to dump excess upstream pressure if it exceeds the setpoint.

The D-040 series Combination Air Valve has the features of both an air release valve and an air & vacuum valve. The air release component is designed to automatically release small pockets of air to the atmosphere as they accumulate along a pipeline or piping system when it is full and operating under pressure. The air & vacuum component is designed to automatically discharge or admit large volumes of air during the filling or draining of apipeline or piping system. This valve will open to relieve negative pressures whenever water column separation occurs.

AVK series 851 double orifice, triple action air valves are designed to allow air to rapidly either escape or enter the pipe system when filling or draining, as well as for automatic discharge of accumulated air during normal working conditions. The unique ‘Aerokinetic’ design allows air to rush out of the system at great speed without forcing the float upwards and closing it prematurely. This makes sure that the valve closes only after all air has left the system and water has entered the chamber.