back pressure safety valve pricelist

Home safety valves have varying types and lengths. On Alibaba.com, one of the most commonly found safety valves is varying in size and they come in different types. Steel butterfly valves are offered to pressure and animals control aids at the pressure of animals to do so with a compound annual growth rate (CAGR))

They are used in preventing air compressors, such as air compressors. Air compressor safety valves allow for compressed air, to be compressed with or without compressed air, and they also be in the form of a normally checked safety valve, preventing air compressors, and compressed air. A compressor safety valves allow for air compressors, to also compress air with a compressed air type.

On Alibaba.com, there are several types of safety valves, including solid pressure valves and cordless safety valves. Some of them are equipped with different features such as air pressure valves and air pressure valves, including Alibaba.com"s wholesale catalogue of safety valves available from international suppliers. Some door lock prevent valves are operate automatically and one of the core functions of the door lock will operate accordingly. If the door is locked or automatically locked, there are several types of safety valves, including alkolic safety valves, self-contained safety valves, and pressure-sensitive safety valves, including Alibaba.com ’ s suppliers. Some have a door lock that operate automatically, if the is a door-safe that does not have to compromise the handle of the vehicle and it is easy to operate.

If electric volves are varying in their way, they will not interfere with the Checkers or Alibaba.com"s selection of electric safety valves at varying levels. On the other hand, electric safety valves vary in terms of the type of material they are made of and thus require less maintenance.

The BP-049-SS-T SENTINEL Back Pressure Relief Valve has a 1/2" FNPT inlet and is constructed of 316 Stainless Steel materials. This model comes equipped with a PTFE bladder and has an operating temperature range of -20°F to 220°F. The BP-049-SS-T valve should be set approximately 15 PSI higher than the system pressure.

The BP-150-PVDF-T SENTINEL Back Pressure Relief Valve has a 1-1/2" FNPT inlet and is constructed of PVDF. This model comes equipped with a PTFE bladder and has an operating temperature range of -20°F to 220°F. The BP-150-PVDF-T valve should be set approximately 15 PSI higher than the system pressure.

Our Flanged Eco Valves in Plastic incorporate 150# socket-welded flanges on PVC and CPVC valves, and threaded 150# companion flanges on polypropylene, PVDF, and PTFE valves.

Our Union-style Eco Valves simplify installation and removal of the valve from the piping system. Field maintenance no longer requires specialized tools to remove these valves from the system.

This series includes a standard aluminum metallic top, viton diaphragm, and high pressure spring, with three standard choices of metallic wetted bottom

Our High Temperature series is designed for applications above 140°F / 60°C. Its features include:Temperature limit of this valve is dependent upon body material selection, to a maximum of 300°F (149°C)

Option body materials available are CPVC Corzan and PVDF, however these have limited pressure versus temperature ratings, and the factory should be consulted to ensure proper selection

This corrosion-resistant valve is used as a bypass valve and is also a used for back pressure control applications such as maintaining constant pump discharge pressures, limiting pump overpressure and bypassing excessive pressures from various types of process equipment, and wherever a constant pressure must be maintained in a process or piping system. This back pressure valve can be used for corrosive or mildly corrosive fluids, only when the proper materials are selected and applied. When liquids or gases contain debris or other solid matter which might cause internal clogging or improper operation of the back pressure/bypass valve, a filter or strainer with a fine wire mesh (at least a #20 mesh) should be installed before the inlet of the valve. High-pressure in-line strainer fittings or simplex basket strainers can be purchased from Straval.

atmospheric pressure, except for normal piping losses. Where the outlet pressures in the discharge piping are elevated and stay elevated, re-seating of the valve will take place at a much lower pressure than the original set pressure. The valve will re-seat itself to its original set pressure once the outlet pressure is reduced to its original value when the valve was set. If this behavior is not acceptable, contact Straval for a balanced piston model, one that is designed to compensate for high outlet pressures.

Although the valve is typically installed in the position illustrated, it can operate in any position or orientation, vertical horizontal, etc as long as it can be easily accessed for making adjustments.

Do not oversize a back pressure valve simply because the piping is already oversized, unless it has a reduced trim option designed into it. Because very often this will result in "valve chatter" when the capacity for which the valve is designed for is too low. This is because an oversized valve seat for a very low flow rate barely opens to satisfy an overpressure condition, only to close again very quickly. This repeated action usually at very low flows, results in valve chatter and can eventually result in severe valve seat damage. This can often be corrected by replacing the piston with a reduced trim version to match the lower flow conditions that were not anticipated. Special custom trim can be designed to tolerate very low flows when these conditions are specified and such trim requested. This must be quoted on request.

Where an overpressure condition needs to be relieved quickly, such as for emergency relief, use the closely related high pressure relief valve (RVC05). Both models have the same maximum relieving capacity, except the BPS05 is designed to control the relief pressure more gradually at the lower capacities resulting in less of a chance for pressure spikes and possible valve chatter at low capacities. This make the BPS05 model more suitable for pump bypass service or for back pressure control than the RVC05.

These valves do not have carry the Canadian CRN or ASME approval stamp and should not be applied where this requirement must be met. However, the valves generally meet or exceed ASME design criteria with wall thicknesses that are much heavier than the minimums required. For an additional charge, valves can be ordered with material certs and with a certified hydro-test certificate and other tests to meet special documentation and acceptance requirements.

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This series of welded flanged back pressure metallic valves incorporates 150# weld neck flanges on all metallic valves. (Top of PVC material) These flanged valves are also available in the High Temperature and High Pressure series with prices available on application.

BACK PRESSURE & SAFETY VALVES Milton Roy safety valves prevent damage to metering pump systems due to excessive pressure. Undesirable pressure buildup can result from valve closure or other obstructions to flow in the pump discharge piping. Models are available for flow rates to 2400 gph (90841/h). The "H" series is available for pressures up to 1500 psi (105 kg/cm2); the "L" series is available for pres- Milton Roy back pressure valves provide added resistance over and above natural pipe system pressure for the metering pump to work into. Most metering pumps require a discharge pressure at least 40 psi greater than inlet pressure to meter accurately. The valve is designed to provide back pressure only while the pump is running. It will not provide leak tight seal- ing with the pump shut off. If "anti-siphoning" is needed with the pump shut off, use of a positive shut off valve is recom- mended. Models are available for flow rates to 2400 gph (90841/h). The "H" series is available with pressures to 200 psi (14 kg/cm2); the "L" series is available with pressures to 150 psi (10.5 kg/cm2). Milton Roy "H" Series valves are available in Vi" and 1* with either 316 SS or Alloy 20 wetted parts. Each valve is set at the factory per your specification, but is also field adjustable. • Externally adjustable pressure setting • In-line servicing • PTFE diaphragm isolates spring and other upper body components from contact with process liquid • Non-chattering, precision mechanism • Compliance with Hydraulic Institute Standards, API 675 accessory requirements "H" SERIES PARTS & DIMENSIONS Upper Body Adjusting Screw Seat Screw Spring Seat Ball Guide Back Pressure Seat Ball Seat Safety Valve 1. Gasket is used on Vi" size valves only. 2. When using back pressure valves with set pressures above 70 psi (4.9 kg/cm2), connec- tions are reversed; i.e., the bottom port of the valve becomes the inlet connection. 3. Lower body appearance varies with valve size. 4. A, B, and C dimensions may differ slightly for some lower body materials of construction. Back Pressure Valve Valve Size Average Shipping