Double Disc Gate Vlave

There are generally two types of double disc gate vlaves, one is the wedge double disc gate valve (that is, the sealing surface of the gate and the center line of the stem are at a certain angle, there are 2.8° and 5°, different manufacturers have different designs) , The other is the parallel double disc gate valve, the gate sealing surface of this gate valve is parallel to the center line of the valve stem, and the two gates are separated in a K shape.

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Product Description

China Double Disc Gate Vlave which Can be Customized From Our Factory with Cheap Price
1.Introduction of Double Disc Gate Vlave

There are generally two types of double disc gate valves, one is the wedge double disc gate valve (that is, the sealing surface of the gate and the center line of the stem are at a certain angle, there are 2.8° and 5°, different manufacturers have different designs) , The other is the parallel double disc gate valve, the gate sealing surface of this gate valve is parallel to the center line of the valve stem, and the two gates are separated in a K shape.

Double Disc Gate Vlave

2.Material of Double Disc Gate Vlave

NO	Name of part	Material
1	Drive cap	Ductile iron
2	Dust cap	Ductile iron
3	"O" ring	NBR
4	Bonnet	NBR
5	Body	Ductile iron
6	Handwheel	Ductile iron
7	Shaft cover	Ductile iron
8	Thrust bearing	Bress/Bronze
9	Bolt	35
10	Stem	2Cr13
11	Copper nut	Bress/Bronze
12	Disc	Ductile iron/EPDM/NBR

Double gates are mostly used for wider working surfaces, and the opening and closing of the valve can be manually controlled according to the height of the valve stem thread to control the medium flow.

3.Advantages of Double Disc Gate Vlave

1. Low flow resistance. The medium channel inside the valve body is straight, the medium flows in a straight line, and the flow resistance is small.
2. Double disc gate valve saves effort when opening and closing. It is compared with the stop valve, because whether it is open or closed, the direction of movement of the gate is perpendicular to the direction of medium flow.
3. Large height and long opening and closing time. The opening and closing stroke of the gate is relatively large, and the lifting is carried out by the screw.
4. Water hammer is not easy to produce. The reason is the long closing time.
5. The medium can flow in any direction on both sides, easy to install. Both sides of the gate valve channel are symmetrical.
6. The structural length (the distance between the two connecting end faces of the shell) is small.
7. The shape is simple, the length of the structure is short, the manufacturing process is good, and the scope of application is wide.
8. Compact structure, good valve rigidity, smooth passage, small flow resistance, stainless steel and hard alloy sealing surface, long service life, PTFE packing, reliable sealing, light and flexible operation.

4. About Tianjin Milestone Valve Co., Ltd.

5. Packaging and Delivery

6. FAQ

1. Can i have a sample order for valve ?
A: Yes, we welcome sample order to test and check the quality, Mixed sample are accepted.
2. Do you have any MOQ limit for valve order ?
A: Low MOQ, 1 PC for sample checking is avaible.
3. Could you offer OEM service ?
A: Yes, OEM is availble.
4. How about the payment ?
A: We normally accept 30% deposit, and balance will be paid before shipping. L7C is OK
5. Whafs the delivery time of your butterfly valves?
A: For most of the sizes,DN50-DN600,we have stock of valve parts,it*s possible to deliver in 1-3 weeks,to nearest seaport Tianjin.
6. Whafs the warranty of your products?
A:We normally offer 12 months of warranty in service or 18 months since shipping date.
7. What is your products standardization?
A: GB/T12238-2008, JBfT 8527-1997, API 609,EN 593-1998, DIN 85003-3-1997