Wey - Model A3/W0/W1/W2/W3 - Knife Gate Valves - Brochure

The body material is corrosion and erosion resistant ductile Ni-Resist ASTM A439 D2, ideally suited for long service life in mining applications. The gate material is 17.4 PH SS heat treated to H900 and is guided for the full length of the stroke for bi-directional bubble-tight shut-off. The seat/seal is mechanically retained to prevent “pull out” and installed flush with the bottom body bore to prevent build-up in the seat area. The valve is equipped with dual heavy-duty scraper blades to wipe the gate clean while opening/closing to prolong packing life. The valve is re-packable in line under full line pressure. Inserted in the upstream body half is a hardened wear ring to protect the seal area from erosion. The heavy-duty carbon steel universal bonnet comes complete with Lexan covers to keep the bonnet area clean and to allow for visual inspection.