✅ Ultra-Durable: 316 stainless steel resists corrosion and extreme temperatures (-200°C to 800°C), 3x longer lifespan
✅ Precision Accuracy: ±1% opening pressure tolerance, zero false triggers
✅ Dual-Thread Design: 1/2" male NPT (inlet) + 1/2" female NPT (outlet) for seamless pipeline integration
✅ Wide Compatibility: 4 pressure ranges for compressors/O&G pipelines/chemical/energy systems
Features
1 The discharge valve opens when the system pressure exceeds the set pressure, allowing the medium to flow out to release the system pressure, and the discharge valve closes when the system pressure drops to the resealing pressure
2 Compact design, integrated valve body
3 The standard seat material is FKM
4 Operating temperature: -23°C~148°C (-10F~300°F)
5 Opening pressure: 25~500 PSIG (1.7~34.5bar)
6 Oxygen ambient application options available
7 The opening pressure is set at the factory
Applications
R series relief valves are proportional relief valves that open gradually as the pressure increases. Consequently, they do not have a capacity rating at a given pressure rise (accumulation), and they are not certified to ASME or any other codes.
Some system applications require relief valves to meet specific safety codes. The system designer and user must determine when such codes apply and whether these relief valves conform to them.
AFKlok proportional relief valves should never be used as ASME Boiler and Pressure Vessel Code safety relief devices.
AFKlok proportional relief valves are not “Safety Accessories” as defined in the Pressure Equipment Directive 2014/68/EU.
