The Crosby H Series Direct Spring Safety Valves are engineered to deliver reliable and robust overpressure protection for steam applications in industrial settings. Designed to meet ASME Boiler and Pressure Vessel Code Section I and Section VIII requirements, these valves offer exceptional performance for steam drums, superheaters, and economizers. With features like ISOFLEX seat technology for up to 93% tightness and a full nozzle flanged option, the H Series ensures long service life, low maintenance, and compliance with global safety standards, making it a trusted choice for power generation and industrial boiler systems.
| Parameter | Specification |
|---|---|
| Sizes | 1¼” F 1½” to 6” RR 10” |
| Orifice Sizes | 0.307 to 19.29 in² (1.98 to 124.45 cm²) |
| Set Pressure Range | 15 to 6200 psig (1 to 427 barg) |
| Temperature Range | Up to 1130°F (610°C) |
| Connections | Flanged or welded inlet |
| Body Materials | Carbon steel, stainless steel, alloy materials |
| Seat Tightness | Up to 93% (ISOFLEX, consult factory for higher tightness) |
| Load Type | Direct spring-loaded |
| Certifications | ASME Section I (V Designator), Section VIII (UV Designator), NB certified |
The Crosby H Series valves are designed for critical steam safety applications:
Its ASME/NB certification, ISOFLEX seat technology, and full nozzle design ensure reliable performance for steam systems.
Yes, the restricted lift option allows tailored capacity for specific applications.
They are certified to ASME Section I (V Designator), Section VIII (UV Designator), and NB standards.
It provides up to 93% tightness of set pressure, reducing leakage and enhancing safety.
Yes, the self-draining design and robust construction minimize maintenance needs.
For more information about the Crosby H Series Safety Valves, pricing, or to request a demo, contact our team:
