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United Brass Works 1/2" Swing Check Valve

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$11.89 - $29.95
{{resource("/ProductPage/Labels/List")}} $35.70 - $74.28

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Durable United Brass Valves.

Swing check valves are placed on return line after steam trap. It prevents back flow of water into steam trap. It needs back flow pressure to seal. Not recommended for pulsating or vibrating service. A metallic disc is included. Available in a variety of sizes. All sizes have 200 WSP.

Features

  • Prevents back flow of water into steam trap
  • Place on return line after steam trap
  • Bronze
  • Available in a variety of sizes
  • Durable

Product Specifications

Brand: United Brass
Units: Each
Size / Dimension: 1/2"
Material: Bronze/Metallic Disc
I replaced all traps & valves but the problem still continues, the water from return tank is too hot and it makes the pump runs over time. I worry that will wear out the pump.
Anonymous
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Extra hot water in the return tank is caused by either bad traps, bad float valves in the return tank, or a bad swing/spring check valve between the pump and boiler.
Staff
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Referring to valves, what does WOG and WSP mean?
Anonymous
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Some valves carry two ratings: WOG and WSP. WOG stands for the water, oil, and gas rating for the valve and reflects the maximum pressure capability of the valve at 100 F. WSP stands for working steam pressure and reflects the maximum steam pressure rating for the valve at the highest temperature rating. The WOG rating is always higher than the WSP rating for a valve or fitting. Some valves are only carry WSP ratings as they would only be used with steam.
Staff
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Do we carry a swing check valve that has a PTFE or non-stick disc?
Anonymous
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At this time we do not carry this type of swing check valve. Ours is a metal seat and a metal disc.
Staff
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Can your spring check valve with Teflon disc, be used on steam return line in place of swing valve?
Anonymous
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Spring check valves provide a more positive seat, they are perfect for areas where there is a lot of vibration.
Staff
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How can I tell which size valve I need?
Anonymous
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The size of our valves are printed above the WSP rating on the valve.
Staff
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Why do some valves come with a WSP and WOG rating, and others just talk about the psi ranges?
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Some valves can be used on water, oil, and air (WOG) as well as steam. Steam is a more abrasive substance, so the WSP (working steam pressure) rating tends to be lower than the WOG rating. Some items, just as steam traps and steam pressure reducing valves are only used in conjunction with steam, so psi ranges are associated with these items.
Staff
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Is blowing through the swing check valve an accurate way of telling whether or not the valve is closing properly?
Anonymous
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No, blowing through the back of it is not a good way of testing whether it will work. The metal to metal seal check valves we carry will not form a tight seal when only supplied with the limited amount of pressure generated when blowing through it. Metal to metal valves will leak slightly and have an allowable leakage rate according to MSS standards. However, this slight amount of leakage would not be critical.
Staff
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Do you carry and sell rebuilt valves?
Anonymous
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No, we do not sell any valves that have been rebuilt.
Staff
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Do your Swing Check Valves have a Teflon® disc?
Anonymous
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Our swing check valves have a metallic disc only.
Staff
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Why would a swing check valve not work properly?
Anonymous
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There are a couple of reasons why the valve may not work properly. First, there may be debris in the valve that either keeps the valve lodged open, or lodged shut. Trying to remove the debris from the valve should solve this problem. With an older valve the seat may have been worn away, if this is the case- the valve will need to be replaced.
Staff
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Where is a swing check valve placed in conjunction to a steam trap?
Anonymous
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A swing check valve should placed after the steam trap in order to prevent condensate from backing up into the steam trap. These should be checked in conjunction with the steam traps in order to ensure the traps are operating properly.
Staff
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What does PSI refer to?
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PSI is a unit of measurement. It stands for pounds per square inch.
Staff
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What is he difference between a Swing Check Valve and a Spring Check Valve?
Anonymous
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Both of these valves are intended to prevent water backing up into the steam trap. Typically swing check valves are used with a steam trap. For boiler feed lines, the Spring Check Valve and Swing Check Valve are both recommended. The Spring Check Valve should be installed closest to the pump, and the Swing Check Valve should be installed closest to the boiler. A Swing Check Valve needs back pressure in order to seal it, whereas a Spring Check Valve is spring-loaded which ensures the valve has closed.
Staff
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How would a check valve, which is not operating properly, effect a steam trap?
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Because a check valve works with a steam trap, a check valve not working properly will have an adverse effect on the steam trap. If a check valve is stuck in a closed position: 1. The condensate that should be flowing from the trap will back up into the trap into the piece of equipment that the condensate is supposed to be collected from. If a check valve is stuck in an open position: 1. The trap may seem to not work as efficiently as before. The trap wouldn’t be discharging as much condensate as it once was. The check valve is supposed to contain the backpressure in the line, so if it is stuck open, the condensate from the trap will not be emptying as efficiently into the return line.
Staff
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