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Control Devices Brass Load Genie Unloading Check Valve, NPT Female x NPT Male

Available in multiple versions

3.7 out of 5 stars 19 customer reviews

Price: $15.97 - $64.58
Product Specifications
Brand Name Control Devices
Material Type Brass
Maximum Pressure 250  PSI
Upper Temperature Range 400  Degrees Fahrenheit
System of Measurement Inch
Connector Type NPT Female x NPT Male
Style Name Threaded
UNSPSC Code 40141600

The Control Devices Load Genie unloading check valve releases trapped press... See more product details


Currently showing 1-4 of 4
Overall Length Part Number Part Number
The Amazon Standard Item Number (ASIN) uniquely identifies the item in the Amazon catalog.
Price Quantity
   
1-3/4 inches PA6-1A B007GDXYOI
$15.97
1-13/16 inches PA12-1A B007GDXZQA
$17.78
2-1/4 inches PA24-1A B007GDY0LE
$34.80
2-3/8 inches PA48-1A B007GDY25S
$34.35
Currently showing 1-4 of 4
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Product Features

  • Unloading check valve releases trapped pressure in a compressor head
  • Made from brass for higher corrosion resistance than steel
  • Male and female NPT threads for connecting to a female and a male threaded pipe or fitting
  • Maximum pressure rating of 250 psi
  • Maximum working temperature of 400 degrees Fahrenheit

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B007IVRQZ6
  • Average Customer Review: 3.7 out of 5 stars  See all reviews (19 customer reviews)
  • Product Warranty: For warranty information about this product, please click here

Product Description

The Control Devices Load Genie unloading check valve releases trapped pressure in a compressor head. The valve body is made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability. Brass can be connected to copper, brass, plastic, aluminum, and welded steel. It has male NPT threads on one end and female NPT threads on the other for connecting to a female and a male threaded pipe or fitting. The NPT threads create a tighter seal than straight threads. The maximum pressure rating is 250 pounds per square inch (psi), and the maximum working temperature is 400 degrees Fahrenheit.

Check valves have two ports and restrict the flow of fluids and other loose materials through a pipe or passageway to one direction. Flow enters through one port and exits through the other, closing when flow reverses or stops. Two common types of check valves are ball cone valves and swing check valves. A ball cone valve utilizes a spring-loaded ball seated against a cone-shaped interior surface to stop the flow of fluid in a forward direction, and a swing check valve has a movable disc on a hinge to block reverse flow. Check valves are rated by their cracking pressure (the minimum upstream pressure required for the valve to operate), and they are used in various water, gas, air, and steam lines.

Control Devices manufactures specialty valves, nozzles, and condensate traps. The company, founded in 1963 and headquartered in Fenton, MI, meets ASME standards.

Customer Reviews

Top Customer Reviews

Connector Type: NPT Female x NPT MalePart Number: PA6-1AOverall Length: 1-3/4 Verified Purchase
Note that there is a minimum flow rate requirement for this valve to work adequately, my pump max flow rate was 0.78CFM at 0psi, and that was not high enough to close the vent (unloading orifice port). So although the one-way check valve opened and passed flow downstream, there was too much continuing leakage through the unloading orifice to allow my setup to build up adequate downstream pressure. <cdivalve.com> lists 1CFM as the minumum flow rate requirement. When my pump was shut off the unloading orifice definitely unloaded any residual upstream pressure in the pump, while the check valve held any accumulated downstream pressure. Although it didn't work for me, I gave it 5 stars as I tried using it below its rated operating range.
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Connector Type: NPT Female x NPT MalePart Number: PA6-1AOverall Length: 1-3/4 Verified Purchase
I too bought this for an OBA system. My air compressor is the Smittybilt 2780 Air Compressor - High Performance - 2.54 CFM/ 72 LPM. This should be enough open the valve, but air is coming out the blow off hole. The Inlet (female side) is installed facing the compressor with the outlet (male side) facing the hose. This is either not a well made product or is not rated correctly. Unfortunately I am past the return period (by 7 days).

Please reference this table from CDIValve.com for correct specs.
http://www.cdivalve.com/images/uploads/Unloading_Check_Valves.png
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Connector Type: NPT Female x NPT MalePart Number: PA6-1AOverall Length: 1-3/4 Verified Purchase
For its intended purpose, this is ideal. I needed a very small inline device to unload my compressor, without external mechanical triggers or such. This fits right inline on a 1/4" pipe thread, and works perfectly. A very small, but necessary device. I made my compressor from several different parts, some of which were old; the original had a mechanical unloader that didn't work well. This one works perfectly, and is a cinch to install. Very well-made.
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Connector Type: NPT Female x NPT MalePart Number: PA24-1AOverall Length: 2-1/4 Verified Purchase
It appears to work as it should, releasing the pressure between the tank and pump, however the valve I got starts leaking air out of the exhaust port at about 115 psi till it shuts off around 125 psi. I'm not sure if this is how these valves are supposed to work or if I got a defective one. I installed it on a compressor I don't use very much so the problem isn't a huge issue but if this was on an everyday compressor, I would've returned it.
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Connector Type: NPT Female x NPT MalePart Number: PA12-1AOverall Length: 1-13/16 Verified Purchase
I am aware that this valve needs at least 1 CFM to operate correctly. My compressor puts out enough air to operate it but when it bleeds off the air in the head of the compressor it also leaks air from the rest of the system past the valve. It is faulty.

Edit:
The replacement came in and it seems to work as advertised. I updated the rating from one to three stars.
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Verified Purchase
Waiting on the second replacement. Using this in my OBA setup with York compressor. Output of compressor is 6-9 CFM, but first one didn't 'check' downstream air, and the second one didn't even have the rubber seal on the output side, so that didn't work either.

I'll update after I install and try out the third one..
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Connector Type: NPT Female x NPT MalePart Number: PA12-1AOverall Length: 1-13/16 Verified Purchase
This device works as advertised, can't complain. At lower compressor speeds there wasn't enough air flow to seat the valve, but that ain't the fault of this product.
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Connector Type: NPT Female x NPT MalePart Number: PA48-1AOverall Length: 2-3/8 Verified Purchase
Very well made and works great for my type of compressor, bought two so I will have a spare they are not easy to find and the price is much better than Grainger!
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