Plumbing Pressure Relief Valves

Adjustable (calibrated), fixed pressure and t&p (temperature & pressure) relief valves for hot and cold water plumbing applications, including water heaters, storage tanks, low capacity pump, passive solar and many other uses.
Show more ...
Filter
Ship Pickup
1/2" MPT, Pressure Relief Valve 100 psi (Lead-Free) Boshart
1/2" MPT, Pressure Relief Valve 100 psi (Lead-Free)
Part#: RVNB05-100NL Brand: Boshart
In Stock
$8.95 / each
$79.50 box of 10
($7.95 each)
3/4" MPT, 304 St. Steel Pressure Relief Valve 75 psi (Lead-Free) Boshart
3/4" MPT, 304 St. Steel Pressure Relief Valve 75 psi (Lead-Free)
Part#: SSRVN07-075 Brand: Boshart
In Stock
$15.95 / each
$143.50 box of 10 + Free Shipping
($14.35 each)
1/2" MPT, 304 St. Steel Pressure Relief Valve 75 psi (Lead-Free) Boshart
1/2" MPT, 304 St. Steel Pressure Relief Valve 75 psi (Lead-Free)
Part#: SSRVN05-075 Brand: Boshart
In Stock
$14.95 / each
$134.50 box of 10 + Free Shipping
($13.45 each)
1/2" MPT, 304 St. Steel Pressure Relief Valve 100 psi (Lead-Free) Boshart
1/2" MPT, 304 St. Steel Pressure Relief Valve 100 psi (Lead-Free)
Part#: SSRVN05-100 Brand: Boshart
In Stock
$14.95 / each
$134.50 box of 10 + Free Shipping
($13.45 each)
3/4" MPT, 304 St. Steel Pressure Relief Valve 100 psi (Lead-Free) Boshart
3/4" MPT, 304 St. Steel Pressure Relief Valve 100 psi (Lead-Free)
Part#: SSRVN07-100 Brand: Boshart
In Stock
$15.95 / each
$143.50 box of 10 + Free Shipping
($14.35 each)
1/2" MPT, Pressure Relief Valve 75 psi (Lead-Free) Boshart
1/2" MPT, Pressure Relief Valve 75 psi (Lead-Free)
Part#: RVNB05-075NL Brand: Boshart
In Stock
$8.95 / each
$79.50 box of 10
($7.95 each)
3/4" MPT, Pressure Relief Valve 75 psi (Lead-Free) Boshart
3/4" MPT, Pressure Relief Valve 75 psi (Lead-Free)
Part#: RVNB07-075NL Brand: Boshart
In Stock
$9.95 / each
$89.50 box of 10
($8.95 each)
3/4" MPT, Pressure Relief Valve 100 psi (Lead-Free) Boshart
3/4" MPT, Pressure Relief Valve 100 psi (Lead-Free)
Part#: RVNB07-100NL Brand: Boshart
In Stock
$9.95 / each
$89.50 box of 10
($8.95 each)
3/4" Pressure Relief Valve 150 psi (Lead-Free) Zurn
3/4" Pressure Relief Valve 150 psi (Lead-Free)
Part#: P1000AXL-150C Brand: Zurn
In Stock
(2)
$47.99 / each
3/4" Pressure Relief Valve 125 psi (Lead-Free) Zurn
3/4" Pressure Relief Valve 125 psi (Lead-Free)
Part#: P1000AXL-125C Brand: Zurn
In Stock
$47.99 / each
3/4" Temperature & Pressure Relief Valve w/ 4" probe Zurn
3/4" Temperature & Pressure Relief Valve w/ 4" probe
Part#: TP1100A-4C-150C Brand: Zurn
The low-lead product
In Stock
(1)
$31.99 / each
3/4" Temperature & Pressure Relief Valve w/ 8" probe Zurn
3/4" Temperature & Pressure Relief Valve w/ 8" probe
Part#: TP1100A-8C-150C Brand: Zurn
The low-lead product
In Stock
$27.95 / each
3/4" Adjustable Pressure Relief Valve 25-175 psi (Lead-Free) Zurn
3/4" Adjustable Pressure Relief Valve 25-175 psi (Lead-Free)
Part#: 34-P1500XL Brand: Zurn
In Stock
(1)
$86.99 / each
1/2" Adjustable Pressure Relief Valve 25-175 psi (Lead-Free) Zurn
1/2" Adjustable Pressure Relief Valve 25-175 psi (Lead-Free)
Part#: 12-P1500XL Brand: Zurn
In Stock
(1)
$83.99 / each
3/4" Pressure Relief Valve 125 psi (Lead-Free) Zurn
3/4" Pressure Relief Valve 125 psi (Lead-Free)
Part#: 34-P1550XL-125 Brand: Zurn
In Stock
(2)
$81.99 / each
1/2" Pressure Relief Valve 125 psi (Lead-Free) Zurn
1/2" Pressure Relief Valve 125 psi (Lead-Free)
Part#: 12-P1550XL-125 Brand: Zurn
In Stock
(2)
$63.99 / each
LF40XL-5, 3/4" High-Capacity Temperature & Pressure T&P Relief Valve w/ 5" Probe, 150psi/210°F Watts
$315.38 / each
Free Shipping on any qty

Plumbing Pressure Relief Valve Applications

The most common applications include:
Water heaters - storage type hot water heaters utilize T&P or Temperature & Pressure type relief valves which combine protection from both over-pressure and over-temperature, while tankless water heaters use pressure-only relief valves.
Pumps - installed after a pump, relief valves help to protect the equipment and components from excessive pressure caused by blockage in the line, over-pumping (malfunctions/incorrect settings) and other conditions.
Water & well tanks - installed on the supply line leading to a water storage tank, they can effectively protect the tank from excessive pressure.

Plumbing PRV Types

  • Water heater PRV's - a general name given to relief valves used with storage and tankless water heaters.
  • T&P relief valves - these incorporate protection both from over-temperature and over-pressure. Commonly used with storage type water heaters, indirect tanks and other hot water vessels.
  • Cold water water PRV's - a general name for relief valves with no test lever, intended for use on fresh water pump lines, well tanks or next to pressure regulating valves.
Show more ...
Top