The Crosby H Series Direct Spring Safety Valves are precision-engineered to provide unmatched overpressure protection for steam safety applications. Compliant with ASME Boiler and Pressure Vessel Code Section I (V Designator) and Section VIII (UV Designator), these valves are ideal for high-pressure steam systems in power plants and industrial facilities. Featuring ISOFLEX seat technology for superior tightness up to 93% of set pressure and a two-ring control system for precise adjustments, the H Series ensures safety, efficiency, and durability. With a wide range of sizes and pressure ratings, it’s a top choice for critical steam applications worldwide.
| 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 excel in precision steam safety applications:
Its ASME certification, ISOFLEX seat, and two-ring control ensure precise and reliable steam pressure relief.
It allows precise adjustments to set pressure and blowdown for optimal performance.
Yes, it is designed for temperatures up to 1130°F (610°C).
The robust construction and self-draining design minimize wear and maintenance needs.
Yes, the restricted lift option allows customization for specific flow requirements.
Contact our team for inquiries about the Crosby H Series Safety Valves, pricing, or to schedule a demo:
