• Stroke Adjuster is made more compact and adjustment is simplified with an internally threaded design. The positive locking device to hold stroke length is readily accessible and easy to operate.
• The Pneumatic Piston and Fluid Plunger Assembly is guided at both ends on TFE composite bearings ensuring concentric movement of the plunger though the seals.
• The clearance between the return spring and plunger has been optimized to eliminate any possible contact.
• A true double sealing arrangement is used so that secondary seal containment is provided.
• Lubrication has been simplified with the use of synthetic grease. The lubrication chamber is filled once over the life of the seals.
• The bleeder is equipped with a barbed fitting for plastic tubing so that the fluid bled from the fluid chamber can be collected.
• Both the discharge and suction check valves have tough TFE composite seats for long life and positive sealing.
• Threaded port after the secondary seal provides for the indication, collection or containment of any seal leakage.

W High Pressure & Flow

Standard Materials:

• Wetted parts - 316 SS
• Plunger - 316 SS
• Controller - MK-X - 316 SS
• Relays - 316 SS

Seal Materials:

• Teflon Graphite (TG) for pressures of 1000 to 10,000 PSIG
• O-Ring seals are available for pressures below 900 PSIG in various materials, K-Kalrez®, V-Viton® and BR-Buna N, EPR-Ethylene Propylene.

Viscosity:

Maximum recommended viscosity 4500 SSU (Saybolt Seconds Universal) or 960 CP (Centipoise).

LD Low Pressure Diaphragm

Features:

WILROY™ Hydraulically Actuated Diaphragm Pump

Williams and Milton Roy have combined technologies to design a pump, blending the proven mRoy® hydraulic by-pass diaphragm design with the Williams “V” Series pump. The result is the low volume, high turndown characteristics of a pneumatic drive coupled with the chemical containment and high pressure capabilities of a hydraulically actuated diaphragm.

The WilRoy is a hydraulically actuated diaphragm pump which delivers chemical containment, low maintenance and overpressurization protection with unsurpassed accuracy and repeatability.

This entirely new pump is available with your choice of either a .25” or a .5” plunger along with these great features:

• 316 SS exposure
  
• Integral relief valve
  
• Maintenance-free hydraulic system
  
• Two sizes in one housing— Field reconfigurable
  
• Compact size for ease of installation
  
• Centralized design for ease of maintenance and operation
  
• Gylon® diaphragm for diverse compatibility
  
• Optimum chemical containment
  

We invite you to look at how we can meet your chemical injection needs with proven solutions from Williams Milton Roy.