VAAS - Valves with a Leading Edge

VAAS offers a range of custom-built square or rectangular knife gate valves. These are uni-directional knife gate valves with the same features (single side raised seat and knife gate pushed to the seat by jams) and offer reliable operation in handling dry powder material. The valve dimensions are made to suit customer’s silo/chute requirements. Typical construction features fabricated steel or stainless steel body. These valves are not generally designed to provide tight shut-off and as such seat leak tests are not conducted for these valves

Type	Wafer, square/rectangular, uni-directional knife gatevalve; rising stem handwheel
Typical Application	Silo / Hopper isolation
Sizes available	Upto 1000mm (40 inch) per side
Pressure rating	Valve designed for non-pressure / non-vacuum gravity feed Applications; others on request.
Face-to face	Proprietory; also as per customer specifications
Drilling	Proprietory; also as per customer specifications
Material availability	standard; others on request
Body	Fabricated steel / st. steel
Gate	304 st steel typical; others on request
Packing	PTFE syntex fiber standard; others on request
Seat/Leakage	Metal-to-metal – Not tested for seat leakage
	Resilient seats – Few options available; consult VAAS.
Superstructure	Steel, epoxy painted
Handwheel	Cast iron, epoxy painted
Pneumatic actuators	Suitable model is VAAS CCGCx & CCMCx Series