Pressure-Matic is a true pressure reducing 1½" or 2½" valve. operated automatically by inner hydraulic controls. No diaphragms, springs or outside controls are involved with the unit, the action being completely dependent upon conditions at the nozzle or sprinkler system. Outlet pressure up to 230 P.S.I. is controlled under all flow and no-flow situations.

The Pressure-Matic valve, constructed entirely of brass, is completely tamper-proof. It fits all existing cabinets where 1½" or 2½" valves are used. Its open height is no greater than existing fire department hose valves. UR-20 and UR-25 valves are available to handle water inlet pressure up to 400 P.S.I. which exceeds the highest allowable pressure under NFPA Standard #14.

The Pressure-Matic with United States and Canadian patents, is applicable for installation in buildings of any height. It is listed or approved by: Underwriters' Laboratories Inc., New York City Board of Standards and Appeals, and Underwriters' Laboratories, of Canada.

Pressure-Matic meets the requirements of NFPA Standard #14, paragraph 2-1.3, extending zone heights from 275' to 400' thus reducing the number of zones required. It fits standard size fire cabinets. Pressure-Matic also functions as a shut-off valve as well as a pressure-regulating valve under both flow and no-flow conditions. It also simplifies testing. When Pressure-Matic valves are used in a fire protection system, the system can be hydrostatically tested at 200 P.S.I. or more as called for by NFPA Standard #14, paragraph 7-1.1. It is not necessary to disassemble or blank off the valve or to take other steps to protect internal parts. Automatic Signal Function Bracket and Visual indicator are available as options.

(A) Supervised Capability Function

When equipped with bracket and switch, the Pressure-Matic valve can be used in a supervised system to produce an audible and/or visual alarm in case the valve is closed.

(B) Automatic Pressure Reducing Function

An outlet flowing or static pressure range of 20 to 230 P.S.I. can be obtained depending upon inlet pressure and valve selection.

(C) Automatic U.L. Listed Check Valve Function

U.L. listed as having automatic checking feature. When dual risers are used and sprinklers are fed from both, Pressure-Matic operates as a check valve to prevent loss of sprinkler pressure in the event of damage to one riser.
IMPORTANT: When testing the sprinkler system for pressure, Pressure-Matic® can be subjected to back pressure up to its full rating (400 P.S.I.) without damage to the valve.

(D) Floor Control Valve

Pressure-Matic provides a floor control valve in an automatic sprinkler system and both 1½" and
2½" sizes are listed by Underwriters' Laboratories for such use. It is equipped with a visible indicator to show valve attitude. The 1½" valve can be used for flows up to 200 G.P.M. and the 2½" size up to 500 G.P.M. The sprinkler system can be pressure tested as required in NFPA Standard #13, paragraph 1-11.3 with back pressure up to full 400 P.S.I. rating of Pressure-Matic without damaging the valve. Pressure-Matic also operates as a check valve at pressures up to 400 P.S.I. in dual standpipe systems where sprinklers are fed from both to prevent loss of sprinkle pressure in case of damage to one standpipe. Since it serves as a check valve, a floor control valve and a pressure reducing valve, it can replace three valves in many cases. In cases where the flows to sprinkler branch lines are required to be over 200 G.P.M., the less expensive 1½" Pressure-Matic fills the requirement and may be used.
An optional bracket allows the use of tamper switches.
Sprinkler pressures up to 230 P.S.I. may be obtained. When the sprinkler system is in a static condition, a very minute leakage past the seat of the pressure reducing valve can, because of the incompressibility of water, result in a large pressure buildup of the downstream side of the valve. In order to reliably maintain the desired safe valve outlet pressure for long periods of time under a static condition, a relief valve on the discharge side of the pressure reducing valve is considered necessary.

(E) Standpipe Systems

Class I-- For use by trained fire personnel. The
2½" Pressure-Matic provides Class I service as outlined by NFPA Standard #14, Pressure-Matic meets the requirements of NFPA Standard #14 paragraph 2-1.3, extending zone heights required. The valve fits standard size fire cabinets.
Pressure-Matic acts as a shut-off valve as well as pressure-regulating valve under both flow and no-flow conditions. It provides for simplified testing, too. When Pressure-Matic valves are used in a standpipe system the system can be hydrostatically tested at 200 P.S.I. or more as called for by NFPA Standard #14, paragraph 7-1.1. It is not necessary to disassemble or blank off the valve or to take other steps to protect internal parts.
Automatic Signal Function Bracket and Visual Indicator are available as options.
Class II-- For use by building occupants. The 1½" Pressure-Matic meets the requirements for Class II service as outlined by NFPA Standard #14. The valves control the pressure to 1½" hose rack units under both flow and no-flow conditions thus allowing the use of rubber lined hose, shut-off nozzles, and periodic testing.
Class III-- For use by building occupants and trained fire personnel. The 2½" Pressure-Matic valve provides Class III service as outlined by NFPA Standard #14. The valve controls nozzle pressure for the use of 1½" hose and nozzle by building occupants. The 2½" X 1½" hose reducer can be removed, together with the 1½" hose, and out any valve adjustment under flow and no-flow conditions of the 2½" line used by the Fire Department.
Finish: Cast Brass
Optional Finish: Polished brass, rough chrome plated or polished chrome plated.

Automatic Sprinkler Systems