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.
Series 740
Brass nozzle, stainless steel ring, disc and springs. Brass /
bronze body, bonnet.
350 psig (24.1 barg) for air/gas and liquid, 250 psig (17.2 barg)
for steam.
Temperatures -320°F (-196°C) to 406°F (208°C)
Series 741
Stainless steel nozzle, ring, disc and springs. Brass / bronze
body, bonnet.
1500 psig (103.4 barg) for air/gas and liquid, 300 psig (20.7
barg) for steam.
Temperatures -320°F (-196°C) to 425°F (218°C)
Series 742
Stainless steel nozzle, ring, disc, all internals and springs.
Carbon steel body, bonnet.
1500 psig (103.4 barg) for air/gas and liquid, 300 psig (20.7
barg) for steam.
Temperatures -20°F (-29°C) to 800°F (427°C)
Series 743
Stainless steel nozzle, ring, disc, all internals and springs.
Stainless steel body, bonnet.
1500 psig (103.4 barg) for air/gas and liquid, 300 psig (20.7
barg) for steam.
Temperatures -320°F (-196°C) to 800°F (427°C)
Series 744 thru 748
Specialty metals with distinct options, contact Aquatrol for
specs, dimensions and cut sheets.
Usages:
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.
Features:
- Full nozzle - Top guided design
- Short, precise blow-down
- Wide choice of inlet/outlet sizes
- Dual-lapped precision seating
- 100% Back pressure tight
- Drain hole with threaded plug
- Cryogenic Compatible
Options:
- O-ring seating options (see charts)
- Packed lift lever or Closed cap
- BSPT and BSPP Piping
- Tri-Clamp Inlets
- Full array of metal options
- API 527 Seating
- Lap Joints Flanges
- Lead Free (D,E, and F orifice only)
- O2 Cleaning
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