206 / S206-PG Product Guide
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Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve KEY FEATURES • Available in globe and angle style Product Overview The 206-PG series control valve is the preferred choice for pressure reducing valves, flow control valves, relief valves and applications with lower to medium flows. This hydraulically operated valve introduces or releases water from the control chamber above the diaphragm to effectively maintain water control. Further adapt the valve to provide control for a wide range of functions by selecting from Singer Valve’s wide range of pilot and accessories options. Customize for functions like controlling pressure, flow or level or in almost limitless combinations to suit specific applications. Removable Stem Cap ASTM A536 Ductile Iron Construction Diaphragm Buna-N or EPDM Buna-N or EPDM Resilient Disc AISI 316 Stainless Steel Seat AISI 316 Stainless Steel Stem NSF 61 Fusion Bonded Epoxy Coating

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve Alternative Models Valve Sizes & Materials Valve Materials Standard Available Sizes Valve Components 1.Valve Body, Cover B16 Brass / B62 Bronze / A536 Ductile Iron Buna-N / Viton (limited sizes) Buna-N / Viton (limited sizes) NSF61 Approved Fusion Bonded Epoxy - Thickness 8-10 mils (200-250 microns) Consult factory AISI 18-8 Stainless Steel AISI 316 Stainless Steel Valve(s) shall be a hydraulically operated globe (angle) valve. The inner valve assembly shall be top and bottom guided by means...

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve The valve cover shall have a separate stem cap on valves larger than 2 1/2 in / 65 mm giving access to the stem for alignment check, spring installation and ease of assembly. On valve(s) 1 in / 25 mm and larger, 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. Valves with lipped spigot covers shall not be acceptable due to risk of rust and difficulty in assembly....

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve Selection Automatic control valves operate by introducing or exhausting water from above the diaphragm at controlled rates. A pressure differential is required and is either inlet to outlet or inlet to atmosphere, depending on the application. Valves are sized to provide an appropriate pressure drop for each application. Most valves require a minimum of 10 psi / 0.7 bar pressure drop to operate. This applies mostly to valves that have the bonnet vented to downstream. With minimum of 5 psi / 0.35...

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve Materials Of Construction Individual components can be upgraded from ductile iron, bronze and brass to stainless steel, for most sizes. Consult with Singer Valve. Model PGM Provides a fully operational back-up system in the event of a diaphragm or pilot failure. See page 54. Ordering Instructions Refer to page 293 for the order form and ordering instructions. Engineering notes, refer to page 292

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve ANSI Valve Data (US Units) Size Flat Diaphragm System 3 in Globe Dimensions All figures show in inches unless otherwise stated Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Angle Dimensions Common Dimensions (Globe & Angle) Width Height (To Stem Cap) Globe Height (To Stem Cap) Angle Body Port Tapping Cover Port Tapping Valve Stroke Displaced Bonnet Volume (Gallons) Approximate Shipping...

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve ANSI Valve Data (US Units) Size Rolling Diaphragm System 12 in Globe Dimensions All figures shown in inches unless otherwise stated. Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Angle Dimensions Common Dimensions (Globe & Angle) Width Height (To Stem Cap) Globe Height (To Stem Cap) Angle Body Port Tapping Cover Port Tapping Displaced Bonnet Volume (Gallons) Approximate Shipping Weight...

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve ANSI Valve Data (Metric Units) Size Flat Diaphragm System 80 mm Globe Dimensions All figures show in mm unless otherwise stated Angle Dimensions Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Common Dimensions (Globe & Angle) Width Height (To Stem Cap) Globe Height (To Stem Cap) Angle Body Port Tapping Cover Port Tapping Valve Stroke Displaced Bonnet Volume (Litres) Approximate Shipping...

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve ANSI Valve Data (Metric Units) Size Rolling Diaphragm System 300 mm Globe Dimensions All figures shown in mm unless otherwise stated. Angle Dimensions Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Common Dimensions (Globe & Angle) Width Height (To Stem Cap) Globe Height (To Stem Cap) Angle Body Port Tapping Cover Port Tapping Valve Stroke Displaced Bonnet Volume (Litres) Approximate...

Main Valves Model 206-PG / S206-PG Reduced-Port, Single Chamber, Hydraulically Operated Valve ISO Valve Data (Metric Units) Size Globe Dimensions Flat Diaphragm System 80 mm All figures show in mm unless otherwise stated Angle Dimensions Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Center Inlet to Discharge Center Discharge to Inlet Common Dimensions (Globe & Angle) Width Height (To Stem Cap) Globe Height (To Stem Cap) Angle Body Port Tapping Cover Port Tapping Valve Stroke Displaced Bonnet Volume (Litres) Approximate Shipping...