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MCVR   VACUUM RELIEF VALVE
MCVR Conrader Vacuum Relief Valve
  • Applications:  Used in Systems to Maintain a Desired Vacuum Level
  • Relief Valves are Proportional - Not “Pop”  Type Safety  Valves
    Not Preset - Field Adjustable 
  • Knurled Adjustment Screw & Locked with Jam Nut
  • Pressure Range: 0-27” Hg
  • Maximum Temperature: -65˚F to 250˚F
  • Construction: C360 Machined Brass Body, Stainless Steel Spring, Nylon Piston, Nitrile Seal (MCVR25 - Stainless Steel Piston and Seal)
  • Available Sizes: 1/4”, 3/8”, 3/4”, 1” & BSPT Threads
  • Everseal 483 Sealant Standard

Max. Recommended Vacuum Pump Size

MCVR25

1/4HP

MCVR38

1HP

MCVR75

3HP

MCVR10

5HP

MCPR   SOFT SEAT RELIEF VALVE
mcpr asme cONRADER sOFT sEAT rELIEF vALVE
  • Applications:  Used in Systems to Maintain  Desired
    Pressure Level 
  • Proportional Relief Valves - Not “Pop” Type Safety 
    Valves Not Preset -  Field Adjustable
  • Knurled Adjustment Screw & Locked  with Jam Nut
  • Maximum Temperature: -65˚F  to 250˚F
  • Construction: C360 Machined Brass Body
    Stainless Steel Spring, Nylon Piston, Nitrile Seal
    (MCPR25 - Stainless Steel Piston and Seal)
  • Available Sizes: 1/4”, 3/8”, 3/4”, 1” & BSPT Threads
  • Everseal 483 Sealant Standard

Part
No.

NPT

Available
 Pressure Range
(PSI)

Flow
@ 5 PSI Crack
Pressure

MCPR25

1/4

10-60
50-125
100-200

2

MCPR38

3/8

0-20

5

MCPR75

3/4

0-20

10

MCPR10

1

0-20


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