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https://www.zecovalve.com/products/gear-operated-gate-valve.html

ZECO Valve Group is established in 1991, as a industrial valve manufacturer in Shanghai, China. We have 5 valve factories in China, which are located in Shanghai, Yancheng and Wenzhou, which mainly produce and supply wedge gate valves, through conduit gate valves, floating ball valves, trunnion mounted ball valves, globe valve made in china, swing check valves, swing check valves, dual plate check valves and forged steel valves.

Description of Gear Operated Gate Valve:
ZECO gear operated gate valve is defined according to the driving mode. Gear operated gate valve is mainly used for large-diameter gate valve. Because of the large torque, it is almost impossible to open the valve by manual operation. ZECO, as a Chinese manufacturer of gear operated gate valve dimensions, can design and manufacture the gear units to be waterproof for outdoor use according to customers' requirements.ZECO gear operated gate valve is available in carbon steel series, stainless steel series, alloy steel series and low temperature steel series. As an expert in industrial pipeline valve solutions, ZECO specializes in designing and manufacturing industrial valves to assure customers of quality.

Features of Gear Operated Gate Valve:
1. ZECO gear operated gate valve adopts the top-mounted stem nut design, because the corrosion situation of outdoor, the handwheel is probably the most easy to corrosion damage of parts, and in replacing the handwheel, ZECO design can ensure the stem and disc in the condition of open valve, even can't fall off the handwheel, ensure the valve in the pipeline in the process of maintaining the normal use;
2. The packing of ZECO gear operated gate valve is made of flexible graphite material, and its sealing performance is very reliable after nearly 30 years of use. But also according to the requirements of the user, the choice of packing ring and grease structure to ensure that the valve stem seal;
3. The stem of ZECO gear operated gate valve is connected to the gate by a t-groove, which allows the gate to be automatically corrected and sealed normally if it is offset by medium impact;
4. The casting of ZECO gear operated gate valve has been strictly inspected by the inspection department to ensure that all materials can meet international standards and make users feel more assured in use.

Material of Gear Operated Gate Valve:
NoPartMaterial
1BodyASTM A352 LCB
2Seat RingASTM A182 F304 + STL
3WedgeASTM A352 LCB + STL
4StemASTM A276 304
5Bonnet GasketGraphite + SS304
6Bonnet BoltASTM A193 B8
7Bonnet NutASTM A194 8
8BonnetASTM A352 LCB
9BackseatASTM A182 304
10Stem PackingReinforced Graphite
11Gear ActuatorASTM A352 LCB