Designed especially for filling, withdrawing or vapor equalizing in half and full coupling installations. Ideal for container service where welded-in dip pipes are not provided. For vapor use, mount in the bottom opening with a threaded dip pipe. For liquid use, mount in the top opening with a threaded dip pipe. These may also be installed in pipe lines provided the connection is made to the male inlet thread and not the female dip pipe connection.
Unit of Measure



  • Precision machined.
  • Cotter pin helps prevents loss of spring retainer due to vibration in service.
  • Stainless steel spring provides consistent closing flow and long service life.
  • Generous flow channels provide low pressure drop.


Body Material

N/A Brass

Disc Material

N/A Brass

Spring Material

N/A Stainless Steel

Stem Material

N/A Stainless Steel

Guide Material

N/A Brass


A. Inlet Connection NPT

N/A 3 in

B. Outlet Connection F. NPT

N/A 3" Male and 2" Female

C. Wrench Hex Flats

N/A 3-1/2 in

D. Effective Length (Approx.)

N/A 1-5/16 in

Dip Pipe Connection

N/A 2" F. NPT

Approximate Closing Liquid Flows

N/A 125 gpm/propane

Approximate Closing Vapor Flows at 25 psig Inlet

N/A 26500 SCFH/Propane

Approximate Closing Vapor Flows at 100 psig Inlet

N/A 46000 SCFH/Propane

Product Type

N/A Excess Flow Valves


N/A RegO


N/A Multiply flow rate by 0.94 to determine liquid butane flow and by 0.90 to determine liquid anhydrous ammonia flow.