McDonnell & Miller 27-W - Liquid Level Control for Open Tank Applications (127200)

The McDonnell No. 27W Valve Mechanism is a float operated valve that automatically adds water or other liquids whenever necessary to maintain a prescribed level. Its versatility and large feeding capacity fit it for a wide range of applications. Its simplicity of design and quality of construction provides dependability.

The No. 27W Valve Mechanism can be used to add make-up water to condensate receiving tanks, to maintain levels in distillation equipment, and for many other liquid level control jobs. It can be flange-mounted directly in the side of a tank or receiver, to feed water through a separate feed line. Mounted in this manner a small percentage of water will feed through the valve mechanism. It can also be mounted inside, to spill water directly into the tank.

Valve stem seating area is made of high temperature composition. Valve seat is of monel, and located a full 1-1/2" above the closing level. Positive alignment of the valve is assured by the cam-and-roller straight-thrust action, and by the valve guides which are cast as an integral part of the machined valve body.

Details:

• For commercial and industrial liquid level open tank applications
• Maximum pressure 35 psi (2.5 kg/cm2)
• Maximum supply pressure 100 PSI (7 kg/cm2)
• Minimum liquid temperature 40° F (4.4° C)
• Maximum liquid temperature 212° F (100° C)