The Carter Model 61524 Hydrant Pit Valve is designed to provide deadman control of the refueling operation within the hydrant pit. Both air and lanyard operation is available. The unit is available with either 6-inch or 4-inch inlet flanges and both terminate with the 2½-inch International Standard Three Lug Aircraft Bayonet Adapter. Now also available with an adapter kit to install the unit in older 12 & 13" diameter pits with 3" mounting flanges.The 61524 utilizes many of the same parts as are used in the other Carter hydrant valves. The basic pit valve assembly consists of three parts, lower valve assembly, upper valve assembly and the pilot valve. The lower pit valve assembly contains a small isolation valve which will allow the removal and servicing of the upper valve assembly and the pilot valve while the pit valve is under pressure (See service manual for proper instructions for use).
The 61524 Hydrant Pit Valve is designed to minimize the propagation of surge pressure shocks into the upstream piping system during closure of the valve.
