TAC Valve Actuator, Snap Action Air Pilot, Operation Delayed Until Pilot Pressure Builds To 35PSI +/- 5PSI, 40-65PSI Pressure Range For Optimum Life, Brass, NBR Seals Next Day Fittings is an authorized Humphrey Distributor. If you have any questions about the Humphrey 341AS Air Valve Actuators's technical information or availability please call us at: 844-323-8752Next Day Fittings is an official Humphrey distributor, we can offer our customers the best pricing and factory lead times. Our trained and knowledgeable staff is always ready to help with any aspect of the Humphrey product purchasing process. Whether you need assistance from a customer service agent or a product engineering expert, Next Day Fittings is your Humphrey partner every step of the way.Air Pilot operator with Snap Action for use in TAC, TAC2, and TAC3 push-button valves. Used for time-delay circuits and other slow-building pilot pressure applications. Made in the USA.