TRAC STYLE 'H' WATER/ SEAWATER PRESSURE REDUCING VALVE

The TRAC Style ‘H’ pressure reducing valve is a self-contained, spring loaded, direct operated device for regulating and reducing high pressure water to any desired operating pressure within its adjustable range. The design, construction, and materials utilized for the TRAC Style ‘H’ pressure reducing valve are ideally suited for shipboard seawater systems service.

The Style ‘H’ pressure reducing valve is available in two variations: Type I and Type II. If no valve type is specified on an order, or if the purchaser has no preference, Type II will be provided.

Type I valves shall be valves in which the spring chamber in combination with the body and bottom cap forms a pressure containing envelope capable of withstanding the full proof pressure rating.

Type II valves shall be valves in which the spring chamber does not form part of the pressure containing envelope. There is a small weep hole in the spring chamber which will indicate a diaphragm failure.

TRAC Style ‘H’ pressure reducing valves may also incorporate a choke feature on the main valve element to limit capacity in the event of a diaphragm failure, if specified in the ordering data. It is generally not necessary or recommended to incorporate a choke feature. It should be understood by the end user that limiting or choking the flow of a standard pressure reducing valve will increase the likelihood of damaging cavitation across the valve seat and may result in accelerated erosion of valve trim in seawater service.

In applications where it is absolutely necessary to incorporate a choke feature, it is recommended to utilize a valve designed specifically for severe service conditions. Pressure reducing valves developed by TRAC Regulator for severe services may incorporate wrought monel or composite trim and/or a contoured port arrangement.

The TRAC Style ‘H’ pressure reducing valve is manufactured in accordance with the following military and commercial specifications (Departures from the military specification valve are available- these modifications include but are not limited to changes in body material, trim material, end connections, and rated pressure):
MIL-V-2042B, MIL-V-2042D, MIL-V-2042E, and ASTM-F-1370
TYPE I and TYPE II, SERIES 150, 250, and 700

For more information on the TRAC Style ‘H’ product line:
TRAC STYLE ‘H’ CATALOG

For detailed maintenance instructions for the TRAC Style ‘H’ product line:
TRAC STYLE ‘H’ COMMERCIAL MANUAL H1

For detailed maintenance instructions for Navy shipboard installations:
TRAC STYLE ‘H’ NAVY MANUAL S6435-DQ-MMO-010
(This document is for official use only and distribution is controlled by the United States Navy. Copies of this document are not available online)

The TRAC Style ‘H’ pressure reducing valve is a direct replacement (regarding fit and function) for the following manufacturer’s designations (MIL-V-2042D and later specifications):
Atlas Valve Company Figure 1910
Charles M Bailey (CMB Industries) Model 30
ITT Lawler Type 2707
Leslie Controls Inc. Class WWBN
Warren Controls Corp. Type 436