Williams Chengalpattu, Karnataka

The pneumatic diaphragm metering pump consists of a liquid chamber and an air chamber separated by a diaphragm. In the liquid chamber, the suction (inlet) and discharge (outlet) ports have check valves that control the direction of the fluid flow. A pipe nipple connects the controller to the pump air chamber. In the air chamber, the airgas power supply from the controller enters and exhausts through the pipe nipple connector. When the controller exhausts the airgas supply, the liquid suction pressure and the return spring force the diaphragm backwards. The diaphragm stops when the end of the diaphragm stem, which is attached to the air chamber side of the diaphragm, collides with the end of the stroke adjuster.

The WILROY metering pump is a unique blend of Williams and Milton Roy pump technology utilizing the best features from both designs to create a new robust pump with unique features and proven technology. The WILROY utilizes the hydraulically actuated diaphragm of  the mRoy pump and the pneumatic drive of a Williams “V” Series plunger pump. This combination provides chemical containment of a low maintenance diaphragm with the convenience of a high-turn down pneumatically operated pump with a stroke rate from 3-45 strokes per minute and  along the ability to adjust the precise amount of chemical injected using the volumetric adjustment knob. A built-in replenishment of the hydraulic oil is achieved with the recirculation of every stroke of the pump while air is purged from the hydraulic oil ensuring repeatability and accuracy with every stroke of the pump.

The Williams lines of pneumatic metering pumps are ideally suited to precisely inject a wide variety of chemicals designed to meet your specific requirements. 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.