PRESSURE REGULATORS

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

TRAC STYLE 'HA' AIR OR NITROGEN PRESSURE REDUCING VALVE

The TRAC Style ‘HA’ pressure reducing valve is a s self-contained, spring loaded, direct operated device for regulating and reducing high pressure air or nitrogen to any desired operating pressure within its adjustable range. The design, construction, and materials utilized for the TRAC Style ‘HA’ pressure reducing valve are ideally suited for shipboard air or nitrogen system services.

The TRAC Style ‘HA’ pressure reducing valve is intended for installation in air or nitrogen systems where the inlet pressure to the valve is 150 psig (or below) and it is required to maintain a constant (within the accuracy limits specified) lower pressure downstream of the valve. The valve maintains this constant delivered pressure during flow and supply pressure variations by automatically throttling (or shutting off flow) as necessary based on feedback of the downstream pressure.

The TRAC Style ‘HA’ pressure reducing valve is manufactured in accordance with the following military specification:
MIL-V-24384B TYPE I CLASS A DESIGN B SERIES 150

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

For detailed maintenance instructions for the TRAC Style ‘HA’ product line:
TRAC STYLE ‘HA’ COMMERCIAL MANUAL HA1

For detailed maintenance instructions for Navy shipboard installations:
TRAC STYLE ‘HA’ NAVY MANUAL S6435-JM-MMA-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)

For air or nitrogen service applications having an inlet pressure rating higher than 150 psig, consider the TRAC Style ‘HG’ gas pressure reducing valve. This valve is manufactured in accordance with MIL-V-2961D Type I, Class 1, Body A and is suitable for shipboard systems intended to regulate air, nitrogen and other gasses. The TRAC Style ‘HG’ gas pressure reducing valve is available with a 400 psig and 600 psig pressure rating.

For air or nitrogen service applications requiring a pilot operated pressure reducing valve, consider the TRAC Style ‘RA’ pressure reducing valve. This valve is manufactured in accordance with MIL-V-24384B Type I, Class C, Design B and is suitable for shipboard systems intended to regulate air with tighter droop characteristics than self-contained, spring loaded, direct operated pressure reducing valves.

TRAC STYLE 'HG' AIR OR NITROGEN PRESSURE REDUCING VALVE

The TRAC Style ‘HG’ pressure reducing valve is a self-contained, spring loaded, direct operated device for regulating and reducing high pressure air or nitrogen to any desired operating pressure within its adjustable range. The valve maintains constant delivered pressure during flow and supply pressure variations by automatically throttling (or shutting off flow) as necessary based on feedback of the downstream pressure.

The Style ‘HG’ pressure reducing valve is intended for installation in shipboard air or nitrogen systems where the Style ‘HA’ may be considered unsuitable (the required rated pressure of the valve is over 150 psig and/or the required end connections are other than MIL-F-1183).

The TRAC Style ‘HG’ pressure reducing valve is manufactured in accordance with the following military specification (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-2961D TYPE I, CLASS 1, BODY A 400 and 600 PSIG rated pressure

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

For detailed maintenance instructions for the TRAC Style ‘HG’ product line:
TRAC STYLE ‘HG’ COMMERCIAL MANUAL HG1

For air or nitrogen service applications having an inlet pressure rating of 150 psig (or below), consider the TRAC Style ‘HA’ air or nitrogen pressure reducing valve. This valve is manufactured in accordance with MIL-V-24384B Type I, Class A, Design B and is suitable for shipboard systems installation.

For air or nitrogen service applications requiring a pilot operated pressure reducing valve, consider the TRAC Style ‘RA’ pressure reducing valve. This valve is manufactured in accordance with MIL-V-24384B Type I, Class C, Design B and is suitable for shipboard systems intended to regulate air with tighter droop characteristics than self-contained, spring loaded, direct operated pressure reducing valves.

TRAC STYLE 'R' STEAM PRESSURE REDUCING VALVE

The TRAC Style ‘R’ steam pressure reducing valve is an internal pilot and internally ported valve utilized for regulating and reducing high pressure steam to any desired operating pressure within its adjustable range. The Style ‘R’ valve requires no external source of power to operate the valve or to detect changes in outlet steam pressure.

The Style ‘R’ valve is intended for installation in low pressure steam systems such as, preheaters, laundry equipment, and galley equipment. The inlet pressure rating of the Style ‘R’ valve is 150 psig and the outlet set pressure is adjustable from 15 to 135 psig. The valve requires at least a 15 psi pressure difference between steam supply pressure and maximum regulated pressure. It can be adjusted to limit maximum output pressure to any value from 15 psi below supply pressure down to 5 psi gauge pressure.

FEATURES
Fully Guided Main Valve - The hardened 440C stainless steel main valve and stainless steel guide prevents galling or binding of internal parts for smooth operation.
Renewable, Interchangeable Parts - The reducing valve can be completely overhauled without removing valve body from the line. Internal trim is fully replaceable, without the need for secondary machining operations.
Stainless Internal Parts - The stainless steel valve seat ring with stellite seat face resists wire drawing. The main valve and cylinder liner are machined from hardened 440C stainless steel. Internal springs and diaphragm are corrosion and heat resistant inconel.
Packless - There is no external stem or other control mechanism penetrating the pressure envelope, and no stuffing box or packing is incorporated in the valve design.
Sensitive Diaphragm - Responds instantly to any flow change and eliminates stuffing boxes and bellows seals. Full travel less than its own thickness minimizes stress on the diaphragm.
Accurate Regulation - Comparable to instrument control with full flow for equivalent pipe size.

The TRAC Style ‘R’ pressure reducing valve is manufactured in accordance with the general requirements of the following military 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-17848C CLASS A, COMPOSITION D 150 PSIG rated pressure
MIL-V-19772A / MIL-DTL-19772B TYPE IV SERIES 100 and SERIES 150 (Modified- Temperature Signal Feedback Circuit Removed)

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

For detailed maintenance instructions for the TRAC Style ‘R’ product line:
TRAC STYLE ‘R’ COMMERCIAL MANUAL R1

TRAC STYLE 'RA' AIR PRESSURE REDUCING VALVE

The TRAC Style ‘RA’ pressure reducing valve is an internal pilot and internally ported valve utilized for regulating and reducing high pressure air or nitrogen to any desired operating pressure within its adjustable range. The Style ‘RA’ valve requires no external source of power to operate the valve or to detect changes in outlet pressure.

The Style ‘RA’ valve is suitable for shipboard systems intended to regulate air with tighter droop characteristics than self-contained, spring loaded, direct operated pressure reducing valves. The inlet pressure rating of the Style ‘RA’ valve is 150 psig and the outlet set pressure is adjustable from 15 to 135 psig. The valve requires at least a 15 psi pressure difference between air supply pressure and maximum regulated pressure. It can be adjusted to limit maximum output pressure to any value from 15 psi below supply pressure down to 5 psi gauge pressure.

The Style ‘RA’ valve is similar in design and construction to the Style ‘R’ valve with the internal trim modified specifically for air service. Tight shutoff is assured with the incorporation of the soft seat arrangement. The resilient seat disc material is available in Buna-N (standard) and Rulon. The Teflon piston seal incorporated in the Style ‘RA’ valve design provides a durable self cleaning and self lubricating seal which eliminates the problems of binding or blow-by typically associated with metal piston rings in air service.

The TRAC Style ‘RA’ pressure reducing valve is manufactured in accordance with the following military specification (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-24384B TYPE I CLASS C DESIGN B SERIES 150

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

For detailed maintenance instructions for the TRAC Style ‘RA’ product line:
TRAC STYLE ‘RA’ COMMERCIAL MANUAL RA1