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 3 MBF-A Fully 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.
  • Protective cap to prevent dirt, moisture and foreign materials from entering the seal area of the relief valve.
  • 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 seating.

Model 3 MBF-A
ASME Flow Capacities Chart (**Call for other Pressures)

Set Pressure
PSIG

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

15#

971

50#

2219

65#

2753

75#

3110

100#

4001

150#

5783

165#

6317

200#

7565

250#

9347

265#

9881

275#

10238

300#

11129

350#

12911

400#

14693

450#

16475

500#

18257

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