The One Built for Exceptional Precision

Williams Chemical Metering Pumps Craft Solutions for Optimal Chemical Handling

Why Choose Us?

Made from 316 stainless steel materials which offers superior chemical compatibility and resistance, whether low volumes or high pressures let us select the right pump for you?

Plunger, diaphragm, or hydraulically actuated diaphragm pumps are available all include the MK XIIA Controller which generates pneumatic pulses to stroke the pump.

V Series

Compact Design
V Series Plunger Pumps

The “V” Series pump is a range of compact, self-contained, pneumatic metering pumps suitable for injecting a wide variety of chemicals that range from 0.07 gph to 9 gph (0.27 lph to 34 lph) and pressures up to 13,100 psig (903 barg).

Often used in oil & gas applications requiring micro-injection of neat chemicals, the CP125V125 model is capable of injecting volumes as low as 0.025 cc/stroke at pressures up to 8000 psig (552 barg). This makes it an ideal niche pump for extreme applications.

Made of 316 SS, the “V” Series pumps are robust and capable of meeting the toughest challenges.

  • Pneumatic operation
  • Corrosion resistant
  • High-flow turndown
  • Greater reliability
  • Simple maintenance
  • Ease of installation
  • Intrinsically safe
  • Flows up to 9 gph (35 lph)
  • Discharge pressure 13,100 psi (903 bar)
  • Manual mode or automatic with solenoid valve

*This data should only be used to provide you with your initial size selection

W Series

Precise Chemical Injection
W Series Plunger Pumps

The Williams “W’ Series is a piston plunger pump with a mechanical seal. It is capable of precisely injecting chemical into a wide variety of process applications.

Whether you need to inject a catalyst in a reactor for a refinery or high volume batch dosage treatments offshore such as biocides for water and fuel treatments.

The “W” Series pump can deliver up to 90 gph (336 liters per hour at pressures up to 2500 psig (172 barg).

  • Flow rates from 9 to 90 gph (34 to 336 lph)
  • Discharge pressures to 3450 psi (238 bar)
  • 100:1 turndown ratio
  • Variety of seal and plunger materials available
  • Dual acting pneumatic relay used to cycle pump
  • Pneumatic pumps are often the choice for FPSO (floating, production, storage, and operating vessel due to limited space and electrical power)

(1) The minimum volume recommended for any pump should be calculated on the basis of 1/4 inch minimum stroke length per minute minimum speed with controller, or 1 stroke per minute with solenoid.

(2) The maximum discharge pressure is achieved using 150 PSI (10.3 BAR) air/gas supply pressure.


Pneumatically & Hydraulically Actuated Diaphragm Pump WILROY Series

The WILROY is a pneumatic-hydraulically actuated diaphragm pump designed for high pressure chemical injection used in applications where the media needs to be isolated by a TFE diaphragm. Can be used for a variety of high-pressure process applications.

  • Gylon® diaphragm offers a wide range of compatibility
  • Cartridge Design Approach
  • Displacement is adjusted by a Hydraulic Bypass Design
  • Pressure capabilities to  3000 PSI (207 BARG)
  • Flow rates from 0.035 gal/hr (0.1325 liters/hr) to 7.8 gal/hr (29.5 liters/hr)
  • Five sizes in two housing makes it field reconfigurable
  • Pneumatic controller, piston plunger and housing, and relay common with V-Series
  • Maintenance Free Sealed Hydraulic system
  • Double Diaphragm Leak-Detection Options

CLD Series

CLD Series
Low Pressure Diaphragm Pumps

The CLD is a pneumatic driven low-pressure diaphragm metering pump designed for use in low pressure chemical injection applications such cooling towers and low-pressure processes where isolation of the chemical is required.

  • Simple design
  • Easy to maintain
  • Intrinsic safety of pneumatic operation
  • Stroke length and stroke rate adjustment
  • High-flow turndown
  • Corrosion resistant construction
  • All 316 SS or TFE wetted parts
  • Ease of installation

Solar Chemical Injection Pump (SCIP)

Outperforms in Remote Environments Solar Chemical Injection Pump (SCIP)

The Williams Solar Chemical Injection Pump (SCIP), previously known as the Solaroy®, is a highly efficient DC-powered injection pump operated by 12 or 24 VDC power. This solar pump was specifically designed from the ground up to handle a variety of flows and pressures while requiring the least amount of power, making this pump ideal for remote locations where power sources are limited.

The SCIP is available in Simplex or Duplex configurations depending on the flow requirements, easily determined using the Williams app available as a free download on iOS or Android app stores.

This solar pump can run continuously with flows from 2 to 100 gallons per day and pressures up to 5,000 psig. The liquid ends are 316 stainless steel with dual seals and ceramic plungers for long product life and excellent chemical compatibility.

  • Single-stage reduction, spur gears and integral cam
  • Three (3) cam sizes (stroke length): 0.30 in., 0.45 in., 0.60 in.
  • Dual-seal proven design
  • No packing to adjust
  • Simplex and duplex heads
  • Explosion-proof (optional)
  • Plunger sizes (pressure capability): 1/4 in. (5,000 psi), 3/8 in. (2,500 psi)
  • Oil bath gear lubrication- to help ensure long life
  • Self-contained (quick-change) 316 stainless steel liquid end design
  • Plunger materials: 17-4ph stainless (standard)
  • Ceramic (optional)
  • Guided crosshead and seal
  • 12 or 24 VDC power
  • UL/CSA approvals

The Williams Solar Chemical Injection Pumps are designed with innovative features to deliver the ultimate in solar-powered performance.

Motor Specifications:

  • Permanent magnet motor (replaceable brushes)
  • Voltage range: 12VDC
  • HP rating: 1/16 hp
  • Agency approvals: UL, CSA

Liquid End Specifications:

  • 1/4 in. or 3/8 in. plunger size
  • Pressure capability: 2,500 psi (3/8 in. plunger) and 5,000 psi (1/4 in. plunger)
  • Plunger material: SS-17-4ph harden (standard) and ceramic (optional)
  • 316 stainless steel head
  • Dual-seal proven design
  • Suction and discharge check valves have TFE seat for long life and positive sealing

Drive Specifications:

  • Universal drive for all pump configurations 0.30 in., 0.45 in. and 0.60 in.
  • Three (3) cam sizes (stroke length)
  • Single stage reduction, spur gears, and integral cam
  • Designed specifically for the WILLIAMS SCIP pump

Pump Accessories

Williams Pump Controls utilize a flow signal from the process into the Pump Control Module, which in turn operates the pump to automatically inject the exact amount of chemical as needed for the application. There are two choices available for various applications: The Automatic Pumping Unit (APU), and the Williams Pump Controller (WPC).

Micro Flow Switch - WFS6704

  • Explosion Proof
    Class I, Division 1 & 2,
    Groups A, B, C, D
    Class II, Division 1 & 2,
    Groups E, F, G
  • Fully Field Adjustable
  • Operates in Any Orientation
  • Miniature Compact Size
  • Operating Temperature
~40 F to +300 F (~40 C to + 150 C)
  • Operating Pressure 300
  • Corrosion Resistant 316 Stainless Steel0 PSIG (207 bar)
  • Shock & Viration Resistance
  • 1/4” NPT Connections

MK XIIA Oscillamatic Controller

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