ASME SECTION VIII FOR AIR-GAS-STEAM OR LIQUID SERVICE
Series 740 safety and relief valve is designed for
accuracy and reliability. Engineered for
heavy-duty industrial usage. Multiple purpose pressure relief
valve for all services: Liquid, Steam and Air/Gas. ASME and
National Board Certified for Section VIII service as well as CE
and CRN certifications. Pressures are to 1500 PSI. Available with
a full array of metal seating options.
Brass, bronze construction with stainless steel ring,
disk and springs. ASME Section VIII to 300 PSI for air/gas
and liquid and 250 PSI for steam services.
Stainless steel nozzle, ring, disk and springs. Bronze bonnet,
and body. ASME Section VIII to 1500 PSI for air/gas and liquid,
300 PSI for Steam.
Stainless steel nozzle, ring, disk and springs. Carbon steel body
and bonnet. Ratings same as 741. Used as an all steel option.
Same as 742, with stainless steel bonnet, body and components.
Used where a stainless steel valve is required.
Pressure Vessels, Pumps, Hydraulics, Tanks, Steam Systems,
Chemical, Cryogenic, Air and Gas Compressors, Separators, by-pass
and over pressure protection. Choose for most industrial
applications requiring a safety relief valve.
- Full nozzle - top guided design
- Short, precise blow-down
- Wide choice of inlet/outlet sizes
- Excellent re-seating characteristics
- Designed for heavy industrial use
- Closed hex cap
- Back pressure tight
- Drain hole with threaded plug
- Cryogenic Compatible
- Lap Joint Flanges
- O-ring seating options (see charts)
- Packed lift lever
- Open lift lever
- BSPT piping
- Tri-Clamp inlets
- Full array of metal options
- O2 Cleaning
- API 527 Seating
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