Fabrication Gate Valve

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Product Details:
Material:Iron
Media:Water, Air, Gas

BODY:
fabricated body that meets or exceeds the design strength requirements of the AWWA C-504 standards. These body configurations can be obtained with weld end, mechanical joints or flanges.

SHAFTS:
Stub shafts are constructed of corrosion-resistant stainless steel or Monel. Shaft diameters are equal to or greater than specified in AWWA C-504, Table 4 for all sizes of Cair Butterfly valves. Connection to the disc is positively locked by stainless steel pins machined to exacting tolerances.

SHAFT SEAL:
PTFE impregnated packing backed by a bronze gland is fully adjustable to eliminate line leakage. A special enclosure which allows required accesses is provided for buried service applications.

DISC:
A smooth profile, flow-thru disc is available in various materials that minimizes pressure drop across the valves and insures stable hydraulic flow characteristics.

SEAT:
Cair valves can be supplied with a fully adjustable mechanically retained seat which provides a 360 degree seating surface designed for reliable, long-term service. These seats can be either on the disc or on the body providing the same reliable, adjustable and replaceable features in compliance with AWWA C-504.

FLANGES:
Flanges are drilled in accordance with ANSI B16.1 Class 125 specifications as standard. Larger sizes are in accordance with appropriate standards.

THRUST BEARING:
Cair valves have a 2-way adjustable thrust bearing on the bottom shaft to accurately centre the disc in the valve. This thrust bearing is permanently lubricated for smooth operation and is sealed to prevent leakage.

DISC EDGE:
Cair valves are provided with a 304 stainless steel disc edge if the seat is on the body, which helps reduce sealing torque and provide reliable service. Those Cair valves with seats on the disc are provided with either BUNA or EPDM or Viton mechanically retained on the disc edge with the 304 stainless steel mating surface in the body.