WATER WORKS

206 / S206-PGM Reduced Port, Integral Back-Up, Dual Diaphragm, Automatic Control Valve

The 206-PGM and S206-PGM control valves are designed for particularly sensitive applications or situations where valves are difficult to access and maintain.

The PGM series control valves provide integral back-up control and the ability to signal should the desired function move off limits. It can also provide an independent and very positive override.

It is a variation of the standard single chamber 106-PG valve with modifications that add the following features:

• Back-up diaphragm
• Completely self-contained
• Modulating or emergency close back-up
• Back-up components kept out of the main stream until required
• Extremely positive shut-off
• Emergency close for security breach or earthquake

The PGM series control valves may be combined with additional Singer Valve specific accessories to add further customization such as:

• Back-up pilot system
• Annunciation with a Single Pole Double Throw Limit Switch

Refer to Main Valve Options and Pilots & Accessories to customize the valve to suit specific applications.

• Ideal for applications requiring redundant and back-up security
• Virtually uninterrupted control under a variety of system failures
• Remote annunciation option available
• Available in globe and angle style

206 / S206-PGM Reduced Port, Integral Back-Up, Dual Diaphragm, Automatic Control Valve

• Valve(s) shall be a hydraulically operated globe (angle) valve complete with an integral back-up actuator. The inner valve assembly shall be top and bottom guided by means bearing bushings.
• In normal operation, the inner valve assembly shall be the only moving part and shall be securely mounted on a AISI 316 Stainless Steel stem. The secondary system shall include a separate operating chamber and components, which will provide independent control on the primary valve.
• The stainless steel stem shall be provided with wrench flats on all valves 4 in / 100 mm to 16 in / 400 mm, for ease of assembly and maintenance.
• All back-up components shall remain stationary, unstressed and will not interfere with normal valve operation until required.
• Back-up operation shall be initiated by either a remote emergency close signal or the controlled function being out of normal operating limits.
• All pressure containing components shall be constructed of ASTM A536-65 / 45 / 12 ductile iron.
• The flanges shall be designed to ANSI Class 150 or Class 300 standards. Flange drilling to ANSI shall be standard; however, ISO and other drillings shall be available upon request.
• Valve(s) shall have a protective fusion bonded epoxy coating internally and externally. The protective fusion bonded epoxy coating shall conform to the ANSI / AWWA C116/A21.16 (current version) specification.
• Valve(s) 10 in / 250 mm and smaller shall provide smooth, frictionless motion with actuation being achieved by the use of a flat style Buna-N / EPDM diaphragm. They shall be constructed of nylon fabric bonded with synthetic rubber. The diaphragms shall not be used as a seating surface.
• Valve(s) 12 in / 300 mm and larger shall provide smooth, frictionless motion and maximum low flow stability with actuation being achieved by the use of the Singer rolling diaphragm technology. The diaphragms shall not be used as a seating surface.
• Bonnets shall be accurately located to bodies utilizing locating pins. Locating pins shall eliminate corrosion resulting from the use of uncoated ductile iron to ductile iron surfaces.
• The AISI 316 Stainless Steel seat shall be bolted in place, utilizing Spiralock thread tapping technology. The AISI 316 Stainless Steel seat ring shall be easily replaceable without special tools.
• The valve(s) shall form a drip-tight seal between the stationary stainless steel seat ring and the resilient disc, which has a rectangular cross-section and is retained by clamping on three and one half sides. The resilient disc shall be constructed of Buna-N or EPDM for normal service conditions.
• All external fasteners shall be AISI 18-8 Stainless Steel with AISI 18-8 Stainless Steel washers. Mild steel studs or bolts will not be acceptable.
• All repairs and maintenance shall be possible without removing the valve from the line. To facilitate easy removal and replacement of the inner valve assembly and to reduce unnecessary wear on the guide, the stem shall be vertical when the valve is mounted in a horizontal line.
• Each valve shall be air tested prior to shipment. The standard test shall include leakage test, seat leakage test, and stroke test. Refer to IOM 622B for further details, contact Singer Valve. Where the set-point is provided, Singer Valve will preset the pilot. Further testing is available upon request at published rates within the capabilities of Singer Valve’s manufacturing facilities.
• The valve(s) shall be covered by a minimum three year (3) warranty against defects in materials and workmanship. The stainless steel seat ring shall be covered by a lifetime replacement warranty.
• The valve shall be a Singer Valve model ____ (insert model number), refer to other respective catalogue sections for further details

Download Specification Document

206 / S206-PGM Reduced Port, Integral Back-Up, Dual Diaphragm, Automatic Control Valve

Customize your valve by adding any of the available options

• Position Indicators
• Oxy-Nitride Stem
• Internal Drop Check
• Grooved Ends
• Reclaimed Water

206 / S206-PGM Reduced Port, Integral Back-Up, Dual Diaphragm, Automatic Control Valve

For more information on the 206 / S206-PGM main valve:

Download the 206 / S206-PGM Product Guide.

Download the 206 / S206-PGM Operations Guide.

206 / S206-PGM Reduced Port, Integral Back-Up, Dual Diaphragm, Automatic Control Valve

To receive pricing on this product, please click below to contact a Singer Valve representative.