About Pressure-Relief Valves
More
ASME-Code Fast-Acting Pressure-Relief Valves for Hot Water
- For Use With: Water
- Specifications Met: ASME BPVC.IV
- Temperature Range: 33° to 250° F
Protect your water-heating system with these valves that meet ASME Code Section IV for hot water heaters and boilers. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. All have a threaded relief port that can be attached to a drain line for remote discharge. Valves have a durable bronze body for a long service life.
For technical drawings and 3-D models, click on a part number.
Inlet | Relief Port | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Location | Pipe Size | Location | Overall Ht. | Test Mechanism | Valve Type | Choose a Set Pressure, psi | Each | |
NPT Female Inlet and Relief Port | |||||||||
Bronze Body—Silicone Seal | |||||||||
| 3/4 | Bottom | 3/4 | Side | 5 5/16" | Lever | Pop Safety | 0000000 | 0000000 | |
| 3/4 | Bottom | 1 | Side | 5 5/16" | Lever | Pop Safety | 0000000 | 000000 | |
| 1 | Bottom | 1 | Side | 6 3/4" | Lever | Pop Safety | 0000000 | 000000 | |
| 1 | Bottom | 1 1/4 | Side | 6 3/4" | Lever | Pop Safety | 0000000 | 000000 | |
| 1 1/4 | Bottom | 1 1/2 | Side | 8 3/8" | Lever | Pop Safety | 0000000 | 000000 | |
| 1 1/2 | Bottom | 2 | Side | 10 13/16" | Lever | Pop Safety | 0000000 | 000000 | |
| 2 | Bottom | 2 | Side | 14" | Lever | Pop Safety | 0000000 | 000000 | |
Fast-Acting Temperature- and Pressure-Relief Valves for Hot Water
- 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 |