Philmac Screwed Ratio ValveIndonesia Industrial Parts

About Ratio Pressure Reducing Valves

Philmac’s ratio pressure-reducing valves are designed to control service line pressure in fixed headwater systems and have been doing so for over 40 years. Their simple yet effective operation means they can protect downstream pipework, fittings, and appliances from the effects of excess water pressure. With a fixed nonadjustable ratio it means the valve does not require adjusting and is tamper-proof.

Ratio valves are manufactured from high-grade materials to provide reliable operation and a high level of corrosion resistance. Not only are spare parts available but these valves are backed by a full maintenance service.

Philmac’s range of ratio valves are designed to handle situations where reliable, controlled high pressure operation is essential.

Application of Ratio Pressure Reducing Valves

Agriculture: Water tanks and troughs on high-pressure systems.
Plumbing: Water supply for fire and potable water from the top of buildings down.
Mining: Water supply down mineshafts.

Benefits of Ratio Pressure Reducing Valves

Fast and Easy Installation

Minimum Space Required for Installation: Ratio valves have a compact body design which makes them perfect for tight applications such as fire services They can be installed in any orientation.
BSP Inlet Threads: The Industrial and Plumbing sectors use British Standard Pipe (BSP) threads as a standard. Philmac also uses these thread types across the screwed ratio valve range to ensure compatibility with other threaded fittings and make installation simple.
Flanged Inlet/Outlet: To make installation easy Philmac also offers a flanged ratio valve. The standard drill hole pattern is Table E, however, to assist with different installations they are also available with DIN, ANSI 150, Table C/D/F/H, JIS, or BS4504 Table II drill hole patterns. Other flange patterns can be supplied on request.
Serviceable: The valves have been designed to be fully serviced and repair kits containing all the seals, o-rings, and instructions are readily available. Philmac also offers a servicing facility where the valves are fully disassembled, and cleaned, and all parts are checked dimensionally and replaced as necessary. The valve is then reassembled with new seals and o-rings and tested to ensure it works at its designated ratio.

Complete Security

Warranty: For peace of mind the flanged ratio valves carry a five (5) year warranty on materials and workmanship when used with potable water.
Simple Sealing Action: Because the valve relies on only one moving part it means high reliability and shutoff when required. There are no internal ports that can become blocked or springs that can become corroded.
Maintained Pressure: Under no flow conditions the downstream pressure is maintained because the valve remains closed and it will not open until the downstream pressure drops when installed in a fixed head system.
Corrosion Resistant: With a DZR brass body (screwed) or bronze body (flanged), 316 stainless steel seat and piston, DZR brass or gunmetal components, nitrile O-rings, and seals ensure years of reliable operation.
Approvals: All valves comply with Australian/New Zealand Standard 4020 which means the valves are suitable for use with drinking water.
Tamper Proof: There are no external regulators or pilot tubes that can be tampered with so once the valve is installed it will continue to operate at its pre-set ratio.

High Performance

Manufactured from DZR brass: The brass components in Philmac screwed ratio valves are manufactured from dezincification-resistant (DZR) brass. This means the brass is resistant in soil and water environments to corrosion involving the loss of zinc leaving a residue of spongy or porous copper.
Manufactured from Gunmetal: The flanged ratio valves are manufactured from a cast gunmetal to provide overall strength in particular the flange of the valve.
High-pressure shutoff: Ratio pressure-reducing valves are rated to a pressure of 3500 kPa (500 psi) or 35 bar (static shutoff) at 200 Celsius to meet the requirements of high-pressure systems.
High Flow Rates: Due to the internal design, when the valve is fully open it allows full flow of water.

Complete Coverage

Wide range: The range of ratio pressure-reducing valves is comprehensive and includes screwed sizes from ½” to 2” (DN15 to DN50) and flanged sizes from 2” to 6” (DN50 to DN150). Some body sizes are available with different flange sizes (refer to the section on Dimensions).

Standards & Tests of Ratio Pressure Reducing Valves

Philmac’s range of ratio valves are designed to comply with the following standards and undertake a range of tests to ensure they comply with these standards.

Standards

AS/NZ 4020: Testing of products for use in contact with drinking water.
AS 1722.1: Pipe threads of Whitworth form part 1: sealing pipe threads..
AS 2129/AS 4087/ANSI 150: Flanges (Other flange specifications on request).
ISO7: Pipe threads where pressure-tight joints are made on the threads.

Tests

Shut Off Test: Valves are tested for shut off against a hydrostatic water pressure of 3500 kPa (500 psi) or 35 bar.

Operation & installation instructions for Philmac Screwed Ratio Valve

Apply PTFE tape or approved sealant to the thread ensuring sufficient is applied to ensure a watertight seal.
Screw into male thread by hand until firm.
Using a pipe wrench or multi grips on the hex end of the valve, screw it into the male thread until tight. Where necessary ensure the male thread is held stationary to avoid it from moving.

Source: Philmac.com