Philmac Flanged Ratio Valve

Philmac’s ratio pressure reducing valves are designed to control service line pressure in fixed head water systems and have been doing so for over 50 years. With a fixed, non-adjustable ratio they provide effective protection for downstream pipework and equipment. Available in flanged connections up to 6”.

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Type

Elbow Female BSP Joiner Male BSP Reducing Spare Part Tee Valve End Cap Bush Barb Clamp Spray Dripper Stake Filter Coupling Socket Nipple Ball Valve Float Valve End Plug Float Nut Pod Kit Riser Adapter

Australian Made

Any Yes No

Warranty

Any None 20-year

Certification

Any WaterMark ASN 4020

Filter Clear

FLANGED SERIES RATIO VALVES (Tested)

Product Number	FLANGES SIZES TO AS2129
90 2601 00	50
90 2602 00	50
90 2603 00	50
90 2604 00	50
90 2605 00	65
90 2606 00	65
90 2607 00	65
90 2608 00	65
90 2617 00	80
90 2609 00	80
90 2610 00	80
90 2611 00	80
90 2612 00	80
90 2639 00	80
90 2626 00	80
90 2627 00	80
90 2628 00	80
90 2629 00	80
90 2634 00	100
90 2630 00	100
90 2631 00	100
90 2632 00	100
90 2633 00	100
90 2660 00	100
90 2651 00	100
90 2652 00	100
90 2653 00	100
90 2654 00	100
90 2665 00	150
90 2655 00	150
90 2656 00	150
90 2657 00	150
90 2658 00	150
90 2676 00	150
90 2677 00	150
90 2678 00	150
POA for Marine Grade Ratio Valves.
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Philmac Flanged Ratio Valve

Installation

Philmac Flanged Ratio Valve

Technical

Philmac Flanged Ratio Valve

Range

Overview / Why Choose This Product

Philmac Flanged Ratio Valves are engineered for precise pressure control in fixed head water systems. With a fixed, non-adjustable ratio, these valves protect downstream pipework and equipment from excess pressure and water hammer. Their simple design uses only one moving part for maximum reliability, and the tamper-proof configuration ensures consistent performance. Built from corrosion-resistant materials and approved for potable water, these valves deliver confidence in critical installations.

Key Features

Fixed ratio pressure reduction – no adjustment required, tamper-proof design

High-pressure shut-off – rated to 35 bar (optional 50 bar)

Simple sealing action – one moving part for reliability

Corrosion-resistant construction – bronze body, stainless steel internals

Multi-position installation – vertical or horizontal orientation

Applications & Benefits

Applications

• Fire service water systems
• Industrial water supply
• Mining shaft water delivery
• Agricultural tanks and troughs

Benefits

Long service life – corrosion-resistant materials for harsh environments

Protects downstream equipment – prevents damage from excess pressure

Reliable performance – tamper-proof and maintenance-friendly

Technical Specifications

• Size Range: Flanged connections up to 6″
• Connection Type: Flanged inlet/outlet (Table E standard; DIN, ANSI, JIS patterns available)
• Pressure Rating: 35 bar (500 psi); optional 50 bar (725 psi)
• Material: Bronze body, 316 stainless steel seat and piston, nitrile O-rings and seals

Note: Always confirm size, pressure class, and compliance requirements against the official datasheet and local standards.

Installation Guide

1. Position the valve according to the direction of flow indicated on the body.
2. Insert gasket between flanges of the valve and mating pipe flange.
3. Align bolt holes and loosely assemble bolts and nuts.
4. Tighten bolts gradually in sequence (e.g., 1-3-6-5-4-2) to ensure even compression of the gasket.
5. Pressurise and test the system for correct operation and leak-free performance.

For detailed diagrams and torque specifications, view the Philmac installation guide online.

FAQs