WATER WORKS

106 / 206-RPS-L&H

Surge Anticipating Relief Valve

  • Protects against power failure surges or pressure waves caused by velocity changes
  • Quick opening relief
  • Easily adjustable pressure setting
  • No electrical services required

The 106-RPS-L&H and 206-RPS-L&H anticipating surge relief valves are based on the 106-PG or 206-PG main valve.

The valve is mounted in a tee, downstream of the pump check valve(s). It is designed to anticipate surges to avoid the severe water hammer often associated with power failure surges.

The RPS-L&H pilot system is comprised of two pilots, the 81-RP and the 82-PR. Both pilots sense pressure through a connection to the header pipe. The 81-RP high pressure pilot opens the valve to relieve excess pressure. The model 82-PR low pressure pilot opens quickly on below normal pressures prior to the return of a surge wave, initiating the opening of the main valve in anticipation of the high pressure wave’s arrival.

  • The valve shall be a Singer Valve model 106-RPS-L&H / 206-RPS-L&H, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16/ 25 or 40) pressure rating / flange standard, globe (angle), style valve. The Model 81-RP Pressure Relief Pilot (Normally Closed Pilot) spring range shall be “___ to ___” psi / bar, with set-point preset at Singer Valve to “___” psi / bar. The Model 82-PR Low Surge Pilot spring range shall be “___ to ___” psi / bar, with set-point preset at Singer Valve to “___” psi / bar. Assembly shall be according to Schematic A-0400C, 6 in / 150 mm and smaller (A-0401C, 8 in / 200 mm and larger).
  • The valve is closed when line pressure is between the set-points of the two pilots. The valve opens initially when line pressure drops below the setting of the low-pressure pilot to anticipate surges associated with a pump stopping. The valve will also continue to react and remain open when the return high-pressure wave is above the setting of the high-pressure pilot or will open when inlet pressure exceeds a pre-determined set-point at which time the valve opens quickly.
  • Refer to Main Valve section, see page 11, 106-PG (or 206-PG) for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
  • Refer to Pilot and Accessories section, see page 249, Model 81-RP Pressure Relief (Normally Closed Pilot) for detailed information pertaining to materials and specifications. Model 82-PR Low Surge Pressure Pilot specification information is available from Singer Valve only at this time.

106 / 206-RPS-D

Pressure Differential Sustaining Valve

  • Maintains a minimum differential pressure
  • Easily adjustable differential pressure setting
  • Valve closes drip-tight when the pressure differential is less than the pilot setting

The 106-RPS-D and 206-RPS-D pressure differential sustaining valves are based on the 106-PG or 06-PG main valve.

The RPS-D uses the 81-RPD pilot valve and has two sensing connections. The valve and pilot remain closed until the difference between the two pressures exceeds the pilot setting. Under flowing conditions, the pilot reacts to small changes in pressure to control the valve position by modulating the pressure above the diaphragm. The pilot setting establishes a differential pressure that is held relatively steady despite changes in system pressure or flow.

  • The valve shall be a Singer Valve model 106-RPS-D / 206-RPS-D, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16/ 25 or 40) pressure rating / flange standard, globe (angle), style valve. The Model 81-RPD Differential Pilot spring range shall be “___ to ___” psi / bar, with set-point preset at Singer Valve to “___” psi / bar. Assembly shall be according to Schematic A-0428B.
  • The valve will automatically open when the pressure differential across the valve exceeds the pilot set-point. Under flowing conditions, the pilot reacts to small changes in pressure to control the valve position by modulating the pressure above the diaphragm. The pilot setting establishes a differential pressure, which is held relatively constant despite changes in system pressure or flow.
  • Refer to Main Valve section, see page 11, 106-PG (or 206-PG) for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
  • Refer to Pilot and Accessories section, see page 249, Model 81-RPD Differential Pressure Pilot for detailed information pertaining to materials and specifications.

PR-160

Pressure Reducing Pilot

The 160 Pressure Reducing Pilot is a spring and diaphragm operated, normally open pilot. The inner valve is held open by the spring and when the control pressure below the diaphragm exceeds the force of the spring, the pilot valve closes.

Model 160 is the standard pressure reducing pilot on all 106 and 206 series valves.

The pilot shall be Singer Model 160, with the spring range specified.

The normally open pilot shall be of bronze construction with a spring to adjust the pressure setting.

The pilot seat, stem, yoke and inner valve shall be of stainless steel 316 construction and the inner valve shall have EPDM resilient compound for seating. The EPDM compound must be bonded permanently to the inner valve and be ground flat and square to assure maximum performance.

The pilot stem shall be guided by a Delrin bushing in the spring casing above the diaphragm and totally removed from the flow of water in the main pilot chamber. The pilot guide and stem location above the diaphragm shall eliminate debris build-up and sticking as well as minimize turbulence and false readings on the diaphragm.

The pilot shall be self-cleaning and self-flushing by locating the outlet in the bottom of the pilot ninety degrees to the inlet.

• Maximum working temperature: 180° F / 82° C
• Maximum working pressure: 400 psi / 27.6 bar

106 / 206-PR-SC

Pressure Reducing Valve with Solenoid Shut-Off   

  • Excellent low flow stability
  • Fast-acting solenoid override
  • Operates as normally open or closed
  • Easily and precisely set downstream pressure

The 106-PR-SC and 206-PR-SC pressure reducing valves with solenoid shut-off are based on the 106-PG or 206-PG main valve.

The pilot valve senses the downstream pressure through a connection at the valve outlet. Under flowing conditions, the pilot reacts to small changes in pressure to control the valve position by modulating the pressure above the diaphragm. The downstream pressure is maintained relatively steady at the pilot set-point.

The solenoid shut-off / override interrupts the PR function to close off the main valve. The valve is available as either normally open where the solenoid is energized to close the main valve or as normally closed where the solenoid is de-energized to close the main valve.

Specifications

  • The valve shall be a Singer Valve model 106-PR-SC / 206-PR-SC, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16 / 25 or 40) pressure rating / flange standard, globe (angle), style valve. The Model 160 Pressure Reducing Pilot (Normally Open Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / “___” bar Solenoid override shall be two-way normally closed: de-energized to close main valve (normally open: energized to close main valve) with a 120VAC / 60Hz (220 VAC / 50 Hz or 24VDC) solenoid coil. Assembly shall be according to Schematic A-0335C.
  • The valve shall maintain relatively accurate control of the downstream pressure regardless of fluctuation in flow or upstream pressure. The solenoid shall allow for remote override capability.
  • Refer to Main Valve section, page 11, 106-PG or 206-PG for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
  • Refer to Pilot and Accessories section, page 249 Model 160 Pressure Reducing (Normally Open Pilot) and Model 26 Flow Stabilizer for detailed information pertaining to materials and specifications. Solenoid specification information is available from Singer Valve only at this time.

106 / 206-PR-S

Pressure Reducing Valve with Downstream Surge Protection

  • Excellent low flow stability
  • Automatically reduces downstream surges during sudden demand reductions
  • Easily and precisely set downstream pressure

The 106-PR-S and 206-PR-S pressure reducing valves with downstream surge control are based on the 106-PG or 206-PG main valve.

Pressure reducing pilot valve senses the downstream pressure through a connection at the valve outlet. Under flowing conditions, the pilot reacts to small changes in pressure to control the valve position by modulating the pressure above the diaphragm. The downstream pressure is maintained relatively steady at the pilot set-point.

The surge pilot senses the downstream pressure. If the pressure rises above the pressure reducing pilot setting and reaches the surge pilot setting, the surge pilot opens in order to close the main valve rapidly.

Specifications

  • The valve shall be a Singer Valve model 106-PR-S / 206-PR-S, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16 / 25 or 40) pressure rating / flange standard, globe (angle), style valve. The Model 160 Pressure Reducing (Normally Open Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / “___” bar. The Model 81-RP Pressure Relief Pilot (Normally Closed Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / bar. Assembly shall be according to Schematic A-0336D.
  • The valve shall maintain relatively accurate control of the downstream pressure regardless of fluctuation in flow or upstream pressure. The downstream surge control increases the closing speed of the valve to help the valve maintain control when demand is reduced suddenly.
  • Refer to Main Valve section, page 11, 106-PG or 206-PG for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
  • Refer to Pilot and Accessories section, page 249, Model 160 Pressure Reducing Pilot (Normally Open Pilot), Model 81-RP Pressure Relief Pilot (Normally Closed Pilot) and Model 26 Flow Stabilizer for detailed information pertaining to materials and specifications.

106 / 206-PR-R

Pressure Reducing and Pressure Sustaining Valve

  • Excellent low flow stability
  • Ensures minimum upstream pressure
  • Easily and precisely set downstream pressure

The 106-PR-R and 206-PR-R pressure reducing and pressure sustaining valves are based on the 106-PG or 206-PG main valve with the addition of the sustaining pilot 81-RP and pressure reducing pilot PR-160.

Provided the upstream pressure setting is satisfied, the 81-RP pilot is kept open, permitting the valve to be controlled by the 160 pilot. The 160 pilot senses downstream pressure and under flowing conditions, it reacts to small changes in pressure to control the valve position by modulating the pressure above the diaphragm.

Should high demand cause the inlet pressure to fall to the 81-RP pilot setting, the upstream pressure has priority and the valve will modulate to prevent the upstream pressures from dropping below the set-point.

When the valve is modulating to sustain upstream pressure above the minimum 81-RP pilot set-point, the downstream 160 pilot may try to open the valve to maintain its set-point, but upstream has priority and downstream pressures will fall below expectations.

In typical applications, the reduced port model 206-PR-R is often the best selection.

Specifications

  • The valve shall be a Singer Valve model 106-PR-R / 206-PR-R, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16 / 25 or 40) pressure rating / flange standard, globe (angle), style valve. The Model 160 Pressure Reducing Pilot (Normally Open Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / “___” bar.
  • The Model 81-RP Pressure Relief Pilot (Normally Closed Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / “___” bar. Assembly shall be according to Schematic A-0332C.
  • The valve shall maintain relatively accurate control of the downstream pressure regardless of fluctuation in flow or upstream pressure until the upstream pressure drops to a pre-determined value.
  • The sustaining pilot shall override the pressure reducing function at such time as the upstream pressure drops to the pre-determined value maintaining relatively steady upstream pressure.
  • Refer to Main Valve section, page 11, 106-PG or 206-PG for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
  • Refer to Pilot and Accessories, page 249, section, Model 160 Pressure Reducing Pilot (Normally Open Pilot), Model 81-RP Pressure Relief Pilot (Normally Closed Pilot) and Model 26 Flow Stabilizer for detailed information pertaining to materials and specifications.

106 / 206-PR-C

Pressure Reducing and Check Valve

  • Excellent low flow stability
  • Drip-tight closing on return flow
  • Easily and precisely set downstream pressure

The 106-PR-C and 206-PR-C pressure reducing and check valves are based on the 106-PG or 206-PG main control valve.

The pilot valve senses the downstream pressure through a connection at the valve outlet. Under flowing conditions, the pilot reacts to small changes in pressure to control the valve position by modulating the pressure above the diaphragm. The downstream pressure is maintained relatively steady at the pilot set-point.

The pilot check valves direct downstream pressure above the diaphragm to close the valve when the system pressures reverse (when the downstream pressure is higher than the upstream).

In typical pressure reducing applications, the reduced port model 206-PR-C is often the best selection.

Specifications

  • The valve shall be a Singer Valve model 106-PR-C / 206-PR-C, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16 / 25 or 40) pressure rating / flange standard, globe / angle, style valve. The Model 160 Pressure Reducing Pilot (Normally Open Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / “___” bar. Assembly shall be according to Schematic A-0309A.
  • The valve shall maintain relatively accurate control of the downstream pressure regardless of fluctuation in flow or upstream pressure. The pilot checks shall be arranged so that the main valve closes tight to prevent reverse flow if the downstream pressure exceeds the upstream pressure.
  • Refer to Main Valve section, page 11, 106-PG or 206-PG for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
  • Refer to Pilot and Accessories section, page 249, Model 160 Pressure Reducing Pilot (Normally Open Pilot), Model 26 Flow Stabilizer and Model 10 Pilot Check Valves for detailed information pertaining to materials and specifications.

106 / 206-PR-48

Pressure Reducing Valve with Low Flow By-Pass

  • Maintains stable flow right down to zero
  • Precise and reliable pressure setting
  • By-pass piped in parallel to reduce space requirements

The 106-PR-48 and 206-PR-48 series pressure reducing valves with low flow by-pass are based on the 106-PG or 206-PG main valve. In addition, a direct acting pressure reducing valve is piped in parallel, using the main valve back port connections.

The pilot valve senses the downstream pressure through a connection at the main valve outlet. Under flowing conditions, the pilot reacts to small changes in pressure to control the main valve position by modulating the pressure above the diaphragm. The downstream pressure is maintained relatively steady at the pilot set-point.

The by-pass valve is set 5 psi / 0.35 bar higher than the main valve. Under low flow conditions, the main PR valve closes and the by-pass stays open, controlling the pressure at very low flows without seat chatter.

In typical pressure reducing applications, the reduced port Model 206-PR-48 is often the best selection.

  • The valve shall be a Singer Valve model 106-PR-48 / 206-PR-48, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16 / 25 or 40) pressure rating / flange standard, globe (angle), style valve. The Model 160 Pressure Reducing Pilot (Normally Open Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / “___” bar. Assembly shall be according to Schematic A-8063E.
  • The valve shall maintain relatively accurate control of the downstream pressure regardless of fluctuation in flow or upstream pressure through main valve with the exception of low flow applications where a direct acting by-pass pressure-reducing valve will override the operation of the main valve.
  • Refer to Main Valve section, page 11, 106-PG or 206-PG for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
  • Refer to Pilot and Accessories section, page 249, Model 160 Pressure Reducing Pilot (Normally Open Pilot) and Model 26 Flow Stabilizer for detailed information pertaining to materials and specifications. Consult Singer Valve for Model 36 Low Flow By-Pass specification information.

106 / 206-PR

Pressure Reducing Valve

  • Ideal for maintaining accurate downstream pressure
  • Responds quickly and effectively

The 106-PR and 206-PR series pressure reducing valves are based on the 106-PG or 206-PG main valves.

The pilot valves sense the downstream pressure through a connection at the valve outlet. Under flowing conditions, the pilot reacts to small changes in pressure to control the valve position by modulating the pressure above the diaphragm. The downstream pressure is maintained virtually steady at the pilot set-point.

In typical pressure reducing applications, the reduced port model 206-PR is often the best selection.

  • The Pressure Reducing Valve shall be a Singer Valve Model 106-PR / 200-PR.
  • Size “___” in / “___” mm) ANSI Class 150 (300) flanges (drilled to ISO PN10 / 16 / 25 / 40 standard).
  • Globe (angle) style

106 / 206-RW

Reclaimed Water Valve

  • Resists corrosion from chlorine chloramine and other corrosive elements typically found in grey or reclaimed water
  • Can be used in all standard and special applications

The 106-RW and 206-RW series control valves offer superior corrosion resistance performance in grey or reclaimed water applications and can be used in all standard and special applications.

It’s constructed from materials which are selected specifically to address corrosion concerns from chlorine, chloramine, and other corrosive elements typically found in grey or reclaimed water.

Select Singer main valve specifications from the main valve section and incorporate the following addendum:

  • Valve shall be color-coded to the standard color for reclaimed water (Optional)
  • The AISI 316 Stainless Steel stem shall be oxy-nitride coated to resist mineral build up.
  • All exposed threads shall be protected to prevent corrosion.
  • All diaphragms and resilient discs shall be EPDM.
  • All main valve yellow metals shall be replaced with stainless steel.
  • Reclaimed water option is available on all Singer main valve bodies incorporating flat style or single rolling diaphragm technology

Select Singer Valve pilot specifications from the pilot section with the following addendum:

  • Pilot selected shall incorporate only EPDM diaphragms and Viton inner valves.
  • Strainer shall be an Arion J1521 Glass (Metal Option) strainer with a 40 mesh screen.
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