Genuine Bendix Supply Valve P/N: 289512RX, in box ready to ship today! Do not hesitate to ask us any questions.A factory handling fee of $20.00 per unit is added at checkout.Tech SpecsMounting: 7/8-20 UNEF-2ASupply Port: 1/8-27 NPTDelivery Port 1: 1/4-18 NPTExhaust Port: 1/4-18 NPTAutomatic Release Pressure: 40 PSIPlunger / Button Height: 1.12 INPlunger Diameter: .500 IN (1/4-20 UNC-3B)Button(s) Included: NoMounting Nut Included: NoDial Included: NoRubber Boot Included: NoMaximum Operating Temperature: 200 F (93 C)Minimum Operating Temperature: -40 F (-40 C)