ZECO manual gate valve is named according to the driving mode. The gate valve operated manually is usually a small-diameter gate valve. Because the small-diameter torque is low, it can be opened easily by manpower, so there is no need to waste the user cost plus the turbine head or bevel gear device. As a famous brand product of Shanghai China and Jiangsu China, ZECO is dedicated to promoting the ZECO brand to the world, making the quality and service of ZECO brand become the world famous products, and making the users of oil companies, engineering companies and design companies recognize ZECO more step by step. This is a sense of mission and responsibility of ZECO as a national brand, which makes ZECO valve appear in every corner of the world and protects every pipeline in the world.
1. The wedge of ZECO manual gate valve is of the single wedge flexible type providing greater sealing capability and lower torque requirements. This also makes the ZECO manual gate valve easier to open and more convenient for manual operation;
2. The wedge of ZECO manual gate valve has accurate guide slots, assuring true alignment and providing full guidance during operation;
3. The seat rings of ZECO manual gate valve are seal welded in the body and are made of carbon steel with hard faced seat surfaces. The seat faces on the wedges are made by welding on 13 CR Stainless Steel or Stellite. In addition, the excellent skills of ZECO welding engineers and the precision debugging of welding robot ensure the perfect welding end;
4. ZECO manual gate valve is provided with a backseat bushing in the bonnet, enabling the replacement of the stem packing when the valve is in the wide open position.
ASTM A216 WCB
ASTM A105 + STL
ASTM A216 WCB + 13Cr
ASTM A276 410
Graphite + SS304
ASTM A193 B7
ASTM A194 2H
ASTM A216 WCB
ASTM A182 F6a