1/2" Adjustable Pressure Relief Valve
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1/2" Adjustable Pressure Relief Valve


Designed for use in grid systems or any sprinkler system where pressure relief is required. The Adjustable Pressure Relief Valve can be adjusted from 75-200 psi. Adjustment to the desired pressure is achieved with the use of an approved fi re sprinkler system pressure gauge. 

The adjustment cap is “diamond” knurled for easy adjustment. The body is cast bronze* and marked with directional arrows for proper fl ow indication. The pressure markings on the adjustment cap are for reference only. Use the system gauge for proper relief setting.


  • 1/2" MNPT x 1/2" FNPT
  • 75 - 200 PSI Adjustable


This valve is not for use as a fire pump or jockey pump casing relief valve.

Typically ships in 1-2 days.

  • $19.84
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  • Weight
    1 lbs
  • SKU
    V-Adj-RV

1/2" Adjustable Pressure Relief Valve (Calibrated)

Range: 75-200 PSI (Field Adjustable)

Type: Angle pattern, ½  ” IPS

Material
Body: Cast Bronze*
Cap: Brass*
Seat Packing: Rubber

Size: ½ ” IPS
Finish: Rough Brass*
Dimensions: 3.05” x 1.540” x 1.10”
*Contains lead. Not for use in water systems intended for human consumption.

Adjustable Pressure Relief Valve can be adjusted from 75-200 psi. Adjustment to the desired pressure is achieved with the use of an approved system pressure gauge. The adjustment cap is “diamond” knurled for easy adjustment. The body is cast bronze* and marked with directional arrows for proper flow indication. The pressure markings on the adjustment cap are for reference only. Use the system gauge for proper relief setting.

Installation and calibration or relief valve
Installation of the Adjustable Pressure Relief Valve is accomplished with tools readily available on the job site utilizing approved installation methods. Do not install outlet piping until relief pressure has been set. To set relief pressure, rotate adjustment cap clockwise until seated. Pressurize system to the pressure that you wish to provide relief Once system pressure has been set slowly turn pressure relief valve adjustment cap counter clockwise until the valve outlet starts to “spit” water from the system (bleed off pressure). Once the valve starts to “spit” then slowly close the valve cap until the valve stops “bleeding off” pressure. Check the system pressure gauge to make sure pressure is maintained at the relief pressure. Repeat steps until proper relief pressure has been set. Make sure to test setting by pressurizing system above relief setting to verify proper relief valve function.


This valve is not for use as a fire pump or jockey pump casing relief valve.
In stock, ships quick.

Lead Times
97% of our orders ship within 1 business day. We stock most items in our warehouse and can ship most orders placed before 1pm CST on the same day. Priority is given to orders that select Next Day Air shipping. Items that are made to order will make note of their lead time in the item description.

Calibrated gauges may add 2 days to ship time, please contact us or select Next Day Air service if needed immediately.

Shipping Locations
eFirePump.com is located in the central United States, we can ship quickly to anywhere in North America. At this time, eFirePump.com ships merchandise to locations within the United States and U.S. territories, including Alaska, Hawaii, Puerto Rico, Guam, and the US Virgin Islands. Additionally, eFirePump.com ships merchandise to Canada and Mexico.Other international locations may not be able to purchase through this website and should contact us for purchasing inquiries.

Shipping & Delivery
The risk of loss and title for all merchandise ordered on this Web site pass to you when the merchandise is delivered to the shipping carrier.

Puerto Rico Customers
Puerto Rico orders must choose US Postal Service for shipping. Orders placed with UPS may be shipped via Postal Service at our discretion.

We accept American Express, MasterCard, Visa, and PayPal payments.

We will honor reasonable requests to return merchandise based on manufacturing defects only, upon which we will provide a refund or replacement per instance. eFirePump.com is not responsible for the cost of shipping on returned merchandise. In some instances a restock fee may be charged. We will always do our best to reach an amicable resolution.

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