★ Long Screw stem nut can offer long working life for screw.

★ Packing gland plus packing can be used for 300# and above rating gate valves. 150# gate valve has single packing, a double packing and lantern ring could be offered as client's requirement.

★ Strong flexible graphite is used for 150# gate valve, metal spiral wound gaskets is used for 300# and 600# gate valve, metal ring gasket is used for 900# and above rating gate valve or for 600# gate valve as client requirements.

★ The integral guide rail inside valve can ensure disc stays at center in open and close process.

★ Flexible wedge can compensate for surface distortion of seat ring and deformation of body due to pipe stresses.

★ Anti-blow stem design has a tapered back seat sealing surface, it can be closely fitted to back seat of bonnet when valve is full open.

★ Join strength of stem and disc is higher than stem screw root.

★ Special alloy overlaid sealing face can be assembled by sealing weld, or connected by threaded as client's requirement.