Call Us: (973) 256-3000 Plast-O-Matic Valves, Inc.
1384 Pompton Avenue
Cedar Grove, NJ 07009 USA

Manually Operated Valves

Series MFR - Hand or Foot Operated/Fail-Safe Spring Return Normally Closed - PVC suitable for Vacuum through 150 PSI

manual shutoff valve for corrosive and ultrapure liquids


  • No pressure differential required.
  • Max. inlet and/or outlet pressure 150 psi.
  • Compact - requires minimum space.
  • Long dependable cycle life.
  • Low pressure drop with high flow rates.
  • Non-sticking design with bubble-tight sealing.
  • Isolated spring is not in the liquid.
  • Easy to install in any position with 1/4-20 mounting holes supplied.

Plast-O-Matic Series MFR 1/2" and 3/4" manually operated normally closed valves are the answer for handling pureliquids, chemicals, acids, and caustics where hand, elbow or foot operation is a prime concern, especially where one hand must be free to do something else -- such as holding a part to be rinsed, etc.


Series MFR manual valves require palm, knee, foot, or elbow force to open and close automatically once the force is released due to an internal spring. The stainless steel spring is not in the liquid. Double U-cup seals are used on the internal shaft for low friction and long cycle life. This in conjunction with a poppet seat at the valve orifice results in a non-sticking design. For mounting the valve securely, four 1/4-20 tapered holes are provided in the base of the body. A plastic foam seal under the activating button prevents dirt and dust from entering the top spring area. The valve body, shaft (or "stem") and button are constructed of Geon PVC.

line drawing of series mfr manual hand or foot operated valve


A2 3/470.04101.6
B376.23 1/288.9
C1 3/1630.21 9/1639.7


CVNPT or BSPInlet and Outlet
Maximum working pressure* at given temp.
Model Numbers
@ 77°F (25°C)@ 140°F (60°C)
3.01/2150 PSI
10 BAR
40 PSI
2,7 BAR
MFR050V (Viton® Seals)
MFR050EP (EPDM Seals)
8.03/4150 PSI
10 BAR
40 PSI
2,7 BAR
MFR075V (Viton® Seals)
MFR075EP (EPDM Seals)

Ordering Information:

Order by part number and specify seal material (Viton or EPDM). Buna-N seals available. If a body material other than PVC is required, please contact our Technical Team at 973-256-3000. The standard MFR valve is built for pressure service. IF VACUUM IS REQUIRED IT MUST BE STATED ON THE ORDER.

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Plast-O-Matic Valves, Inc. 1384 Pompton Avenue Cedar Grove,
NJ 07009 USA Phone: (973) 256-3000 Fax: (973) 256-4745
California Warehouse 4054 Brewster Way Riverside, CA 92501
USA phone: (951) 686-2852 Fax: (951) 686-6328
Email: Legacy home page: please click here