Model # 1/2 SCV

Internet #203804502

Watts 1/2 in. Brass FPT x MPT Service Check Valve
0098268679946

Watts

1/2 in. Brass FPT x MPT Service Check Valve

$829 /each

Product Overview

This service check valve is an excellent choice to facilitate the servicing of system components without the need to drain the system. It is designed to work when installed between the system and the component. This valve is spring loaded, which allows it to open to system pressure when component is loaded, and close when component is removed, maintaining system integrity.
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Product Overview

This service check valve is an excellent choice to facilitate the servicing of system components without the need to drain the system. It is designed to work when installed between the system and the component. This valve is spring loaded, which allows it to open to system pressure when component is loaded, and close when component is removed, maintaining system integrity.
  • Made of solid brass for strength and durability
  • Excellent for use with expansion tanks, float vents, and pressure gauges
  • Adapts to standard pipe thread
  • Spring loaded
  • Facilitate the servicing of components under pressure
  • For boiler applications

Product Overview

Model #: 1/2 SCV
Internet #: 203804502

This service check valve is an excellent choice to facilitate the servicing of system components without the need to drain the system. It is designed to work when installed between the system and the component. This valve is spring loaded, which allows it to open to system pressure when component is loaded, and close when component is removed, maintaining system integrity.

California residents: see   Proposition 65 information

  • Made of solid brass for strength and durability
  • Excellent for use with expansion tanks, float vents, and pressure gauges
  • Adapts to standard pipe thread
  • Spring loaded
  • Facilitate the servicing of components under pressure
  • For boiler applications

Info & Guides

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Name 1/2 in. Brass FPT x MPT Service Check Valve 1/2 in. Brass Push-to-Connect Check Valve Spring Checks for Mixet Faucets Non-Pressure Balanced Valves 3/4 in. Brass In-Line Check Valve
Brand Watts Tectite BrassCraft EZ-FLO
Ratings (3) (0) (0) (2)
Valve Outlet Diameter (in.) .5 0.5 0.75
Connection FIP x MIP PTC IPS PE x IPS PE
Valve Inlet Diameter (in.) .5 0.5 0.75
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Specifications

Dimensions

Product Depth (in.)
0.75
Product Height (in.)
1
Product Length (in.)
.75
Product Width (in.)
0.75
Valve Inlet Diameter (in.)
.5
Valve Outlet Diameter (in.)
.5

Details

Application
Water Supply
Compatible Pipe Material
Brass
Connection
FIP x MIP
Features
Removable,Threaded
Indoor/Outdoor
Indoor
Material
Brass
Maximum Pressure (psi)
150
Maximum Working Temperature (F)
240
Product Weight (lb.)
.15lb
Returnable
90-Day
Valve Type
Check

Warranty / Certifications

Manufacturer Warranty
Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment.

Specifications

Dimensions

Product Depth (in.)
0.75
Product Height (in.)
1
Product Length (in.)
.75
Product Width (in.)
0.75
Valve Inlet Diameter (in.)
.5
Valve Outlet Diameter (in.)
.5

Details

Application
Water Supply
Compatible Pipe Material
Brass
Connection
FIP x MIP
Features
Removable,Threaded
Indoor/Outdoor
Indoor
Material
Brass
Maximum Pressure (psi)
150
Maximum Working Temperature (F)
240
Product Weight (lb.)
.15lb
Returnable
90-Day
Valve Type
Check

Warranty / Certifications

Manufacturer Warranty
Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment.

Questions & Answers

Flow direction AND THREAD?

What is the flow direction? From female to male or from male to female? FPT x MPT means NPTFxNPTM, right?
Asked by: Bobby
From Watts Installation Instructions: Installation Instructions Watts Service Check Valves, Model SCV, facilitate the servicing of system components without the need to drain the system. They install between the system and the component. As the component is threaded into the service check valve the spring loaded valve opens to system pressure. As the component is removed, the valve closes, maintaining system integrity while the component is being inspected. (See other side for installation instructions) Flow is from Female (FPT) to Male (MPT) when a component is attached. When component is removed, the valve closes and holds flow in check. A typical installation might be in between a Pressure tank and an Air separator in a How Water Supply circuit piping. The benefit is the Sppuly Line (Pressure Tank) pressure is maintained when the Air Separator is removed for service.
Answered by: techmanhou
Date published: 2017-04-09

which direction does the flow go? Male end towards female or vice versa?

Asked by: Guppy
How does one keep pressure in an expansion tank by removing the check valve with the tank? The valve is still open and there is NO pressure retained in the tank, but it sure will cause a pressurized air separator to make one heck of a mess, completely defeating the purpose of the check valve, which is to keep the system water, IN THE SYSTEM, under pressure, and not all over the floor. And I mean ALL over the floor!...and still pumping! The air separator requires NO maintenance, and the expansion tank only needs to be removed if it fails. And who, in his right mind, would remove an air separator if the system is still under pressure? This is why shut off valves were invented. Isolate a component, remove, and replace it, then open the shut off valves fore, and aft, and bingo. Proper technique dictates that one should close the shut off valves (there if the installation was properly done), keep the check valve in place on the separator (essential if appropriate shut off valves have not been installed), remove the expansion tank, clean up the little bit of water on the floor, so the check valve can then be removed (more leakage & cleanup), installed on the new expansion tank (or the tank installed directly onto the check valve, if shut off valves have not been appropriately installed), and the whole thing screwed back into the air separator (if valves are appropriately in place), then open the shut off valves, check for leaks ('cause if you don't, they'll be there), do a final clean up, and then go have a cup of coffee...and a danish. Did you follow all that? Two sets of instructions to follow, one for an installation done the right way, and the other for the way you'll probably find it. Anyway,... Note: Shut off valves are your friend and much too infrequently used, especially by pro installers, 'cause they cost time and money that jacks up the price of the job and rattles the "Single Payer," but it's the right, and best way to go, especially for those of us cursed with the ability to actually do things by ourselves. You'll always be happy that you put them in when inevitably, a component fails.
Answered by: Gadfly
Date published: 2017-09-05

How much differential pressure is required to open the valve in the forward direction?

Asked by: Possum
It is not a back flow prevention check valve in the traditional sense. The flow is Right (FPT) to Left (MPT) as presented in the image provided. The valve will open to "System Pressure" when a component is attached to the system with the valve in-between. It is designed for an typical boiler water supply system which usually ranges between 25-60 psi. However it may open at a much lower pressure, possibly when there is any significant system pressure to component pressure difference, the pressure is likely capable of opening the valve when a component is attached. This works similar to a quick-connect air line valve connector. With a 'component' attached & when a demand is called for the flow begins, if the 'component' is removed, the line pressure is maintained. http://www.watts.com/pages/_products_details.asp?pid=629
Answered by: techmanhou
Date published: 2017-10-21
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Customer Reviews

1/2 in. Brass FPT x MPT Service Check Valve is rated 3.7 out of 5 by 3.
Rated 5 out of 5 by from Purchaser mds, does NOT understand how this check valve works. A device screwed into the female f... Purchaser mds, does NOT understand how this check valve works. A device screwed into the female fitting is SUPPOSED to open the check valve, and KEEP it open, so that there is flow in and out of the device. REMOVING the device from the female fitting, while leaving the male fitting screwed in place CLOSES the check valve, and hence the flow. HE WANTS TO DEFEAT THE FUNCTION OF THE VALVE! Ah,...BLISS!
Date published: 2017-09-05
Rated 5 out of 5 by from To be used only where male fittings are utilized When used as described above the value works great...
Date published: 2017-09-04
Rated 1 out of 5 by from When you install a fitting into the female of the valve the fitting locks the check mechanism of ... When you install a fitting into the female of the valve the fitting locks the check mechanism of the valve in the open position rendering it useless. If you back the fitting off so that the check will work, the valve will leak under pressure.
Date published: 2017-02-28
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