📋 Basic Information
Applications
Boilers, HVAC, Water Pipelines
Working Medium
Air, Water, Steam, Gas
🛠️ Product Description
Materials & Construction
- 1. Cap - Brass
- 2. Lever - Q235
- 3. Adjust Screw - Brass
- 4. Nut - Brass
- 5. Spindle - Brass
- 6. Spring - 55CrSi
- 7. Valve Body - Brass
- 8. Spring Seat - Brass
- 9. Disc - Brass
- 10. Valve Seat - Brass
Sealing Options & Temperature Range
| Sealing |
Temperature Range (Reference) |
Features (Reference) |
| FKM | -30 ~ 180℃ | Oil, gas, chemical media |
| PTFE | -60 ~ 170℃ | Strong chemical resistance |
| RPTFE | -60 ~ 220℃ | High-temp stability |
| EPDM | -40 ~ 110℃ | Hot water, HVAC systems |
| Metal-to-Metal | Higher | Long life |
Working Principle
- System pressure acts on the disc from the inlet side.
- The pre-compressed spring keeps the disc tightly sealed under normal operation.
- When pressure reaches the set point, upward force overcomes spring force and the disc pops open instantly.
- High-velocity discharge stabilizes the valve in a full-open position for rapid pressure release.
- As pressure drops below the reseat point, the spring pushes the disc back to the seat for a tight, leak-free seal.
📐 Specifications
Dimensions (Unit: mm)
| Inlet |
d |
Outlet |
Lift |
L1 |
L2 |
H |
| 1/2" | 13 | 1/2" | 0.5 | 30.5 | 46 | 157 |
| 3/4" | 19 | 3/4" | 0.7 | 35 | 54 | 169.5 |
| 1" | 25 | 1" | 0.9 | 40.5 | 66.5 | 200 |
| 1 1/4" | 32 | 1 1/4" | 1.2 | 50 | 73.5 | 216 |
| 1 1/2" | 38 | 1 1/2" | 1.4 | 59 | 86 | 243.5 |
| 2" | 50 | 2" | 1.8 | 65 | 95.5 | 281.5 |
🔗 Related Products
🏭 Manufacturing Excellence
✔ 100% Pressure Set-Point Calibration: Each valve is tested individually for accuracy.
✔ Full CNC Machining: Disc, seat, spindle, and body processed with high precision.
✔ High Durability: All-metal structure for long lifespan in harsh environments.
✔ Customizable: Set pressure, connection type, and lever style options.
❓ Frequently Asked Questions
Are you a factory or a trader?
We have our own brass products factory and are able to supply brass valves, fittings, custom parts, and more. We have an average production capacity of 1.5 million pieces per month.
How do you ensure product reliability?
From raw material inspection to 100% pressure tests and appearance checks, we provide detailed inspection reports and support third-party online inspections.
Do you have an R&D team for custom designs?
Yes, we have a professional R&D team that manufactures hundreds of customized products annually based on specific customer requirements and sketches.
Can I request samples before placing an order?
Absolutely. We are happy to provide samples, especially for customized products, to ensure they meet your exact specifications.
What are your quality control standards?
We perform 100% pressure and leakage testing on every valve before shipment to guarantee system safety and reliability.
Do you accept flexible payment methods?
Yes, we offer mixed and convenient payment services to provide a better purchasing experience for our global clients.
ElvisCast Precision
