Model ZS Strainer

316 Stainless Steel

  • 316 Stainless Steel, large area Z plate screen
  • Ductile iron, NSF approved HFE coating
  • Complies with AWWA C701 & C702

The Singer Model ZS Strainer is designed to protect control valves and pipelines from foreign matter and debris in the flow stream. The Z plate screen design is excellent for providing a smooth laminar flow, which is ideal for locations ahead of automatic control valves.

The Z plate screen is manufactured in corrosion resistant Stainless Steel and allows for a large flow area. It is easily removed by taking off the top cover plate. It is also supplied with flushing ports on both sides of the strainer along with an air bleed connection and connections across the screen for the installation of a differential pressure gauge if required.


  • The strainer shall be a Singer Model ZS, ANSI Class 150 (ANSI 300, ANSI Flanges drilled to PN 10/16/ 25 or 40) pressure rating/flange standard.
  • The strainer body shall be constructed of ASTM A536-65/45/12 ductile iron or equivalent.
  • The cover shall be constructed of 1045 Steel or equivalent.
  • The strainer shall have a protective NSF approved HFE coating, externally and internally that shall conform to ANSI/AWWA C116/A21.16 (current version) specification. No matching of external parts after final coating will be acceptable to ensure continuous coating surface throughout the entire strainer.
  • Strainer screen shall be a 316 Stainless Steel Z plate, drilled/punched with holes to give greater than the pipe area to minimize head loss.
  • It shall be removable through the top cover without the need for any special tools. Flat or curved screen will not be acceptable.
  • All external fasteners shall be 18-8 Stainless Steel with 18-8 Stainless Steel washers. Mild steel studs or bolts will not be acceptable.
  • Drain ports and connection tappings will be supplied with 316 stainless steel plugs.

106-PG Stainless Steel

Stainless Steel Full Port, Single Chamber, Hydraulically Operated Valve

  • Anti-cavitation option is ideal for high pressure drop situations
  • Available in globe style

The 106-PG series control valve is designed to suit a large variety of applications such as pressure, flow or level control. This hydraulically operated valve introduces or releases water from the control chamber above the diaphragm to effectively maintain accurate water control.



Single Point Insertion Flow Metering Valve

  • Accurate flow metering, combined with control valve to save space/cost
  • Supplied with Flow Convertor for local display with 4-20mA output measurement or can be combined with PLC-based control panel for flow control applications
  • +/- 2% of rate accuracy, NIST traceable

The Singer Model 106-SPI-MV is a Single Point Insertion Electromagnetic Flow Meter, installed and calibrated in conjunction with a Singer Valve to provide an accurate flow rate that can be utilized with the metering valve as a stand alone option or built into a 106-2SC-PCO pilot system to provide complete flow-based valve control.

The sensor is available for one-inch taps, depending upon valve size and application. The compact insertion design fits in confined spaces and offers complete accessibility. The flow meter can be removed for easy inspection, cleaning, calibrating or verification.

This cost effective flow meter option is available for valve sizes from 4” (100mm) to 36” (900mm) inches. The flow sensor comes pre-calibrated from McCrometer’s NIST traceable Calibration Lab and requires no recalibration in the field. With no moving parts and a single-piece design, the SPI Mag’s sensor contains nothing to wear or break, and it is generally immune to clogging by sand, grit or other debris.

The 106-SPI-MV Mag is profiled for the valve body, further enhancing its measurement accuracy by allowing precise determination of mean velocities.


  • The valve shall be installed with a 1” (25mm) Single Point Insertion Magnetic Flow Meter in one of the inlet body tappings.
  • Unit will be factory installed and programmed with correlative factors for Main Valve body flow profile.
  • The flow meter shall consist of two components: an electromagnetic sensor and a converter.
  • The 1” (25mm) electromagnetic sensor shall be capable of operating in valves from 4” (100mm) to 36” (900mm).
  • The flow meter shall determine the volumetric flow rate by means of the Continuity Equation where flow rate “Q” equals mean velocity “V” times cross sectional area “A” (Q = V x A). The velocity measurement must be taken at a known location, then, through empirically established equations, the sensed velocity will be converted to a mean velocity. 
  • The flow meter converter shall be microprocessor based with a keypad for instrument set up and LCD displays for totalized flow, flow rate engineering units and velocity. The converter shall power the flowsensing element and provide a galvanically isolated Dual 4-20mA output.
  • It shall be possible, in the test mode; to easily set the converter outputs to any desired value within the range. The 4-20mA scaling, time constants, pipe size, flow proportional output, engineering units and test mode values shall be easily set via the keypad and display.
  • Four separate fully programmable alarm outputs shall be provided to indicate empty pipe, forward/reverse, polarity (normally open/close), analog over-range, fault conditions, high/low flow rates, percentage of range, and pulse cutoff. The converter shall periodically perform self-diagnostics and display any resulting error messages. All set up data and totalizer values may be protected by a password.
  • The flow-sensing element shall be of an electromagnetic single point type design and factory calibrated to traceable standards, such as NIST. The sensor shall be made of a polyurethane with pure carbon electrodes exposed to flow. 
  • To eliminate erroneous readings due to pipe wall effects, the sensor must have its electrodes located at least 3/16” from pipe wall and be designed with a curved tip shape, so as not to collect debris while in the operating position. Flat tipped or Doppler sensors shall not be acceptable.
  • The sensor cable is 20 feet (6m) of multi-conductor, abrasive resistant, PVC jacketed submersible cable flexible to -400F/C. The sensor cable shall be permanently bonded to the sensor. Additional sensor cable, up to 200 feet (61m), shall be available as an option.
  • The insertion tube and restraining rods assembly shall be provided for the smooth installation and operation of the velocity sensor and shall be of sufficient length to allow a full profile of the flow conduit. The stainless steel insertion tube shall be rated for 250 PSI (1,724 Kpa) @ 1600F (710C). 
  • Hardware must allow sensor to be secured by bolts when sensor is being inserted and retracted. A stainless steel compression seal assembly shall also be supplied.
  • No flow meters with accuracies expressed as a percentage of full scale will be accepted and flow meter must be NIST Traceable.
  • PDF's: 


    Single Process Controller

    • Simplified loop process controller with advanced P.I.D. implementation
    • Quick configuration for any single process application such as flow and pressure
    • Capable of remote 4 to 20 mA SCADA process set-point adjustment
    • Precise and stable valve positioning
    • IP65 (NEMA 4) front panel sealing, 1/4 DIN package scalable readouts with super bright LCD
    • Capable of local control of model 2SC-PCO dual solenoid valves for single process

    The EPC is a single process loop controller designed to complement the Singer Model 2SC-PCO Dual Solenoid Control Valve. Range of application is dependent on the process variable (feedback) transmitter used, which includes (but not limited to) common automatic control valve functions with conventional pilots.

    Model EPC controller reads and compares the process feedback (process variable) 4 to 20 mA signal to the desired setting (set-point) 4 to 20 mA signal. Model EPC then accurately positions the valve to bring the process variable towards the set-point until they coincide.

    • The controller shall be a Singer Valve model EPC Controller, powered by 100 VAC to 240 VAC 50 / 60 Hz source. The controller shall come complete with configuration buttons and solid state construction with internal chassis capable of being removed for inspection.
    • The controller shall accept a continuous process variable (feedback) 4 - 20 mA signal and a continuous set-point (command) 4 - 20 mA signal. The dual solenoid valve shall be positioned by the controller to bring the process variable towards the set-point.
    • The controller shall have a built-in, adjustable, advanced P.I.D. optimization for accuracy.
    • Deadband, zero, and span of 4 - 20 mA signal shall be easily adjusted via push buttons.
    • The controller shall have a readout for valve operation.
    • Prior to shipment, the controller shall undergo full function and operational tests.

    106 / 206-HC

    Hydraulic Check Valve

    • Drip-tight seat
    • Independently adjustable opening and closing speed controls

    The 106-HC and 206-HC hydraulic check valves are based on the 106-PG or 206-PG main valve. The valve functions as a two position valve - either fully open or fully closed.

    The HC allows one way flow only. Under normal forward flow, the valve opens as the higher inlet pressure lifts the inner valve assembly and the fluid in the upper chamber is discharged to the lower pressure, downstream side of the valve.

    When pressure is reversed, the now higher downstream pressure is applied to the upper operating chamber as flow reversal occurs. The diaphragm / inner valve assembly moves down and the valve closes tightly.


    • The valve shall be a Singer Valve model 106-HC / 206-HC, 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 Opening Speed Control shall be adjusted in the field to allow for slow opening. Closing speed should be field adjusted to permit slow closing after allowing surges through the valve and back to the source preventing damage (check with pump supplier to determine if backflow through pump is acceptable). Assembly shall be according to Schematic A-0422D.
    • The valve shall open for normal direction of flow and close to prevent reverse flow. Opening and closing speeds shall be individually adjusted to prevent surges. The valve shall be installed allowing for flow over the seat (flow is in the opposite direction through the valve as compared to other standard function categories).
    • Refer to Main Valve section, page 11, 106-PG / 206-PG for detailed information pertaining to valve sizes and materials, selection criteria and specifications.


    Pump Control Panel

    • Automatically interfaces pump and control valve to avoid starting and stopping surges
    • Visual indication of operational status
    • Simple to install
    • Suitable for use with either in-line booster or deep well by-pass pump control valves
    • Reduces field wiring costs

    The SPC pump control panel provides the interface between the pump motor starter and the Singer pump control valve. The SPC ensures that the pump starts and stops without causing line surges.

    The SPC panel energizes the control valve pilot solenoid simultaneously with pump start. When pump shut-down is required the panel keeps the pump running while the pilot solenoid is de-energized. The panel turns the pump off just as the control valve completes its full stroke travel. The SPC panel is equipped with delay timers and emergency fault contacts to provide the customer with local and remote indication for various operational failure conditions. The SPC panel is connected to the pilot solenoid and limit switch that are standard components in the control valve pilot system. The panel is also connected to the customer supplied pump discharge pressure switch and the pump motor starter. A second limit switch and emergency shutdown solenoid are optional components for the control valve pilot system. The logical arrangement of indicator lights with the Hand Off Automatic (HOA) selector switch provides easy supervision of the sequencing and the operating status.

    • The pump control panel shall be a Singer Valve model SPC-”_____”-”_____”, powered by 120 VAC / 60 Hz (220 VAC / 50 Hz) source, suitable for interfacing with Singer Model 106-BPC, -PG-BPC and -DW / 206-BPC, PG-BPC and DW pump control valves.
    • The panel shall include 3 amp controls circuit breaker, and a 20 amp motor starter panel contact circuit breaker. Logic module, relays, and fully labelled connection terminals shall be housed inside a NEMA 4X rated rain tight enclosure.
    • The pump control panel shall provide proper sequencing and operation of the pump control valve with the pumping system.
    • The pump control panel shall accept a pressure switch dry contact, limit switch dry contact, and remote start command contact
    • The pump control panel shall use a pre-programmed logic module to provide proper sequencing and digitally adjustable delay timer adjustments
    • The pump control panel shall have cover-mounted HOA (Hand Off Automatic) switch, operation indicator lights, and alarm indicator lights
    • Prior to shipment, the panel shall undergo full function and operational tests


    Pressure Reducing Pilot

    The model 82-PR is a spring and diaphragm operated, normally open pilot valve, with the sensing chamber(s) separated from the operating chambers. It closes when the control pressure below the diaphragm exceeds the force of the spring. The model 82-PR is used as the standard low pressure pilot on model RPS-L&H anticipating surge valves.

    • Maximum Working Temperature: 180° F / 82° C
    • Maximum Working Pressure: 400 psi / 27 bar
    • Spring Ranges: Standard: 20 to 80 psi / 1.4 to 5.5 bar
    • Optional: 7 to 25 psi / 0.48 to 1.7 bar, 45 to 200 psi / 3.1 to 13.8 bar, 100 to 350 psi / 6.9 to 24.1 bar, 200 to 500 psi / 13.8 to 34.5 bar


    Differential Pilot

    The model 625-RPD is a remote sensing, spring and diaphragm operated, normally closed pilot with large diaphragm area for increased sensitivity. The pilot opens when the control pressure exceeds the spring force or the differential established by the spring. The model 625 is used for special applications where a low pressure set point or highly sensitive and responsive pilot is required.

    • Maximum Working Temperature: 180° F / 82° C maximum
    • Maximum Working Pressure: 400 psi / 27.6 bar
    • Spring Ranges: 5 to 15 ft / 1.5 to 4.6 m; 12 to 30 ft / 3.7 to 9.1 m; 25 to 50 ft / 7.6 to 15.2 m


    Differential Relief Pilot

    The model 106-RD is a spring and diaphragm operated, normally closed pilot designed to allow flow when the inlet pressure exceeds the outlet pressure by a predetermined amount. The model 106-RD is used as a differential control valve on Singer model 106-A-Type 4 altitude control valves.

    • Maximum Working Temperature: 120° F / 82° C
    • Maximum Working Pressure: 400 psi / 27.5 bar
    • Spring Ranges: 5 to 15 ft / 2 to 7 psi; 1.5 to 4.6 m / 0.14 to 0.48 bar
    • 10 to 50 ft / 4 to 22 psi; 3 to 15.2 m / 0.28 to 1.52 bar

    Model 43

    Rotary Float Pilot (On / Off)

    The 43 stainless steel float actuated pilot with non-modulating rotary motion, provides non-modulating On-Off operation of the main valve. It has higher capacity and faster response time than other non-modulating float pilots. The differential between the level where the main valve opens and the level where the main valve closes, is adjustable. The 43 pilot allows for faster operation of the main valve over traditional float pilots, due to increased port size. The standard configuration is for the pilot to close the main valve on high level and open the main valve on low level. The 43 pilot is used on all non-modulating model F-Type 5, 106 and 206 series float valves. 
    The 43 pilot has a higher pressure rating 150 psi / 10.35 bar as compared to Model 39 (80 psi / 5.5 bar).

    The pilot shall be a Singer Model 43.

    • The pilot shall be non-modulating and made of 316 stainless steel construction.
    • The inner valve shall utilize Buna-N seals to provide drip-tight shut-off in the valve body.
    • The pilot shall include a 4 ft / 1.2 m brass float rod with adjustable stops and a copper float (alternate lengths of float rod are available).
    • The pilot shall close the main valve on rising water level (standard configuration).
    • Maximum working temperature: 180° F / 82° C
    • Maximum working pressure: 150 psi / 10.35 bar
    • Cv flow coefficient is 0.21
    • Can be utilized as part of sump ejector assembly
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