Relief Valves

1” MBP Semi-Internal
1 1/4” MBP Semi-Internal
2” MBP Semi-Internal
2” MBF Fully Internal
3” MBF Fully Internal
3” MBF-A Flange Mounted Internal
4” MBF-A Flange Mounted Internal
4” MBF Internal
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Model 4” MBF-A Flange Mounted Internal

Designed specifically for large storage containers and other storage devices.

Features:

  • All functioning valve parts, including the pressure setting nut, are within the tank.
  • Our simple design minimizes the risk of damage to the valve and eliminates the possibility of tampering.
  • Standard material of construction is 304 stainless steel for maximum resistance to rust and corrosion.
  • Stainless steel construction for easy removal for periodic testing as required by DOT.
  • Relief valves are rebuildable, which is a cost savings to the customer.
  • ASME UV Certified, UL Listed, DOT Registered, (CRN) Canadian Registered.
  • Unique double O-ring system provides reliable.

Model 4” MBF-A
ASME Flow Capacities Chart (**Call for other Pressures)

Set Pressure
PSIG

Flow Cap. SCFM @ 20% O.P.
ASME

15#

1606

50#

3668

100#

6614

150#

9560

200#

12506

250#

15452

265#

16336

275#

16925

300#

18398

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