The QB model knife gate is an uni-directional valve designed for general industrial service applications. The design of the body and seat assures non-clogging shut off on suspended solids in industries such as: Wastewater treatment plants, Chemical plants, Food and Beverage etc.
Body:
Wafer style cast monoblock with raised face, with reinforced ribs in larger diameters for extra body strength. Internal cast-in gate wedges and guides allows for tighter shut-off. Full port design for greater flow capacity and minimal pressure drop. Internal design avoids any build up of solids that would prevent valve from closing.
Gate:
Stainless steel gate as standard. Gate is polished on both sides to avoid jamming and seat damage. Bottom of the gate edge is machined to a bevel to cut through solids for a tighter seal in the closed position. On request: Thickness and/or material of the gate can be changed for higher pressure requirement.
Seat: (resilient)
Unique design that mechanically locks the seat in the internal of the valve body with a stainless steel retainer ring. Standard EPDM also available in different materials such as NBR, Viton, etc.
Packing:
Long-life packing with several layers of braided fibre plus an EPDM o-ring, with an easy access packing gland ensuring a tight seal. Long-life braided packing is available in a wide range of materials.
Stem:
The standard stainless steel stem offers a long corrosion resistant life.
Yoke or actuator support:
Made of EPOXY coated steel (stainless steel available on request). Compact design makes it extremely robust even under the most severe conditions.
Epoxy coating:
The epoxy coating on all JCS cast iron and carbon steel valve bodies and components is electrostatically applied making the valves to be corrosion resistant with a high quality finished surface.
Materials:
Body: WCB, 304, 316, 316L
Gate: 2Cr13, 201, 304, 316, 316L
Stem: 2Cr13, 304, 316
Sealing: EPDM, NBR, Viton, PTFE, Metal, Stellite
Note: Other materials can be supplied on clients' request.
|
Size(mm) |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
400 |
|
L |
48 |
48 |
51 |
51 |
57 |
57 |
70 |
70 |
76 |
76 |
89 |
|
H |
309 |
347 |
369 |
413 |
475 |
529 |
695 |
753 |
885 |
1000 |
1088 |
|
D0 |
200 |
240 |
280 |
320 |
400 |
450 |
|
|
|
|
|
Wenzhou JCS Valve Manufacture Co., Ltd., is a comprehensive valve enterprises which integrates scientific research, design, manufacture and sales. The company guarantees the product's quality with superior machining apparatus and testing methods.
JCS upholds "sincerity, quality first, customer first" for the purpose. It specializes in a series of valves including knife gate valve, Jacketed valve, butterfly valve, ball valve, gate valve, check valve, globe valve, threaded valve, which can be equipped with manual, electric, pneumatic, hydraulic, electro-hydraulic, chainwheel actuators etc. These valves can be applied widely to the automatic control system fields such as papermaking, sewage disposal, chemical fibre, petrochemical industry, food, metallurgy, electricity, pharmacy, etc...We assure that every piece of valve, before shipment, will be tested based on high standard, so quality has always been good enough to enjoy high reputation all over the world.
