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About Pressure-Relief Valves
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Fast-Acting Temperature- and Pressure-Relief Valves for Hot Water
Female × Female
Male × Female
Male × Female With Extended Body
- For Use With: Water
- Specifications Met:
Pipe size of 3/4-2: ASME BPVC.IV
Pipe size of 1/2-2: CSA Certified - Max. Temperature: 210° F
Also known as T & P valves, these open when water temperature reaches 210° F or at the set pressure. They are commonly used with water heaters and storage tanks. All spring fully open at a water temperature of 210° F or the set pressure and remain open until the system is restored below the set point. For remote discharge, valves have a threaded relief port to attach a drain line. Body is bronze for durability and a long service life.
Valves with 3/4 to 2 pipe size meet ASME Code Section IV for hot water.
Valves with an extended body are designed for installation through thick insulation.
For technical drawings and 3-D models, click on a part number.
Inlet | Relief Port | Set | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Location | Maximum Pressure, psi | Pipe Size | Location | Pressure | Temperature, °F | Water Flow Capacity, Btu/hr. | Features | Fits Insulation Thick. | Insertion Lg. | Valve Ht. | Overall Ht. | Test Mechanism | Valve Type | Each | |
NPT Female Inlet and NPT Female Relief Port | ||||||||||||||||
Bronze Body—Silicone Seal | ||||||||||||||||
| 3/4 | Bottom | 125 | 3/4 | Side | 125 | 210° | 185,000 | __ | __ | 3" | 5 7/8" | 8 7/8" | Lever | Pop Safety | 0000000 | 0000000 |
| 3/4 | Bottom | 150 | 3/4 | Side | 150 | 210° | 185,000 | __ | __ | 3" | 5 7/8" | 8 7/8" | Lever | Pop Safety | 0000000 | 000000 |
NPT Male Inlet and NPT Female Relief Port | ||||||||||||||||
Bronze Body—Silicone Seal | ||||||||||||||||
| 1/2 | Bottom | 150 | 1/2 | Side | 150 | 210° | 15,000 | __ | __ | 1 7/16" | 3 1/4" | 4 11/16" | Lever | Pop Safety | 0000000 | 00000 |
| 3/4 | Bottom | 150 | 3/4 | Side | 150 | 210° | 95,000 | __ | __ | 1 7/16" | 3 1/4" | 4 11/16" | Lever | Pop Safety | 0000000 | 00000 |
| 3/4 | Bottom | 150 | 3/4 | Side | 150 | 210° | 105,000 | __ | __ | 3" | 3 1/4" | 6 1/4" | Lever | Pop Safety | 0000000 | 00000 |
| 3/4 | Bottom | 165 | 3/4 | Side | 150 | 210° | 105,000 | Extended Body | 1 1/4" | 2 1/2" | 4 3/4" | 7 1/4" | Lever | Pop Safety | 0000000 | 00000 |
| 3/4 | Bottom | 165 | 3/4 | Side | 150 | 210° | 1,438,000 | Extended Body | 1 5/8" | 3 1/2" | 6 5/8" | 10 1/8" | Lever | Pop Safety | 0000000 | 000000 |
| 3/4 | Bottom | 165 | 3/4 | Side | 150 | 210° | 1,438,000 | Extended Body | 3 5/8" | 5" | 8 5/8" | 13 5/8" | Lever | Pop Safety | 0000000 | 000000 |
| 1 | Bottom | 165 | 1 | Side | 150 | 210° | 2,135,000 | __ | __ | 2" | 6 1/4" | 8 1/4" | Lever | Pop Safety | 0000000 | 000000 |
| 1 | Bottom | 165 | 1 | Side | 150 | 210° | 2,135,000 | __ | __ | 4" | 6 1/4" | 10 1/4" | Lever | Pop Safety | 0000000 | 000000 |
| 2 | Bottom | 150 | 1 1/2 | Side | 150 | 210° | 1,200,000 | __ | __ | 3" | 8 1/2" | 11 1/2" | Lever | Pop Safety | 0000000 | 000000 |