JQ PRESSURE RELIEF DEVICE

We provide our customers with a friendly, experienced point of contact to source the Crosby Style JQ Pressure Relief Device. We have a broad range of capabilities and bring a wealth of experience and additional value. This means we can supply spare parts or complete products with competitive pricing and delivery. Please complete the form at the bottom of this page or send your RFQ to crosby@chaseint.co.uk.

Crosby pressure relief valves have maintained leadership in overpressure protection for over 140 years. The direct spring-operated safety and pressure relief valves are among the world’s most widely used for oil and gas production and refining, petrochemical and chemical processing, and conventional and nuclear power. Crosby pressure relief valves maintain the industry’s most extensive and capable flow facilities for testing in air, steam, and water.

CHASE has supplied Crosby pressure relief valves for many years. We have a close working relationship with manufacturers, Emerson.

Crosby Style JQ Pressure Relief Device

General Application

The Crosby Style JQ Pressure Relief Device is a combination pressure relief device designed with internal parts completely isolated from corrosive fluids and environments. It’s designed to provide dependable overpressure protection for vessels used for the transportation and storage of chlorine and other dangerous commodities, these unique valves are in use worldwide on railroad tank cars, barges and stationary vessels.

Features

  • Designed in collaboration with the Chlorine Institute, Inc.
  • Provides reliability and safety beyond that possible with a conventional pressure relief valve.
  • Inlet and outlet diaphragm seals effectively prevent the corrosion of internal working parts and the escape of fugitive emissions.
  • Choice of 1½” and 4″ (38 and 100 mm) inlet sizes.
  • 1½” (38 mm) model equipped with a special Chlorine Institute-approved inlet flange and metal-to-metal seat.
  • Optional 1½” 300 lb ANSI raised face flange adapter and elastomer O-ring seat available for exceptional tightness.
  • 4″ (100 mm) model standard with 4″ 300 lb ANSI large tongue-faced inlet flange and metal seat
  • Raised-face flange available as an option.
  • Association of American Railroad Approval Nos. SRD-989034 and SRD-989035.

Technical Data

  • Inlet sizes: 1½” and 4″ (DN 40 and DN 100)
  • Pressure limits:
    • 1½”(DN 40): 450 psig (31 barg)
    • 4″ (DN 100): 375 psig (25.8 barg)
  • Temperature range: -20 to +250°F (-29 to +121°C)

For pricing and delivery on any Crosby JQ Pressure Relief Device please complete the form below or send your RFQ to crosby@chaseint.co.uk.