double check valve ,wafer type check valve

Company Advantages
1. Shenzhen Mech Valve Trading Co., Ltd. adopts appropriate material to align with functions of double check valve . It can be configured to operate electronically, manually or pneumatically
2. The product can bring remarkable economic benefits and is now becoming increasingly popular in the market. It delivers excellent resistance to different types of oils and grease
3. The product has an anti-inflammatory property. The elements present in it help to naturally refresh and rejuvenate the tired skin. It has great resistance to stress corrosion cracking
4. This product is free of any toxic element or substance. Any harmful materials will be excluded out and it is professionally handled to eliminate these toxic elements. It has fusion bonded epoxy coating in accordance with AWWA C550
5. The product features dimensional accuracy. There are no deviations in the design phase and the production process thanks to the CAD software and CNC machine. It complies with international speciﬁcations such as NSF61

Statement

Check valves serve to prevent the backflow of medium in the piping system for protection of important equipments, widely used in the ﬁeld of potable water, water supply and drainage, sewage disposal, irrigation, air conditioning, ﬁre protection as well as chemical and energy industry.

Features

◔ Material:Ductile Iron EN-GJS-450-10

Valve body, bonnet, disc are all produced in ductile iron material which provides guarantee for high strength and good corrosion resistance.

◔ Fusion bonded epoxy coating

Fusion bonded epoxy coating in accordance with ANSI/AWWA C550 for both interior and exterior surface which provides reliable corrosion resistance.

◔ Small hydraulic friction loss with reasonable structure design

MATERIAL SPECIFICATION

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H44X, H44T

• Connection Ends: Flange to BS EN 1092-2:1997

• Working Pressure: PN10/PN16

• Temperature Range: Rubber Seal: 0℃- 80℃
Metal Seal: -10℃- 350℃

• Coating: Fusion Bonded Epoxy Coating in accordance with ANSI/AWWA C550 or painting upon request

Part No.	Part	Standard Speciﬁcation	Options
1	Valve Body	EN-GJS-450-10
2	Seat Ring	Bronze ASTM B62 C83600/ZQSn5-5-5 (Pressed Fit)	AISI 304, AISI 316 Pressed Fit or Threaded
3	Disc	EN-GJS-450-10+EPDM
4	Clapper Arm	EN-GJS-450-10
5	Washer	SS420
6	Nut	Carbon Steel Zinc Plated	SS304, SS316
7	Hinge Pin	SS420
8	Bonnet Gasket	EPDM	Graphite+Steel
9	Bolt	Carbon Steel Zinc Plated	SS304, SS316
10	Washer	Carbon Steel Zinc Plated	SS304, SS316
11	Bonnet	EN-GJS-450-10
12	Plug	Malleable Iron Galvanized

Note: For special material request other than standard speciﬁcation, please indicate clearly on the inquiry or order list.

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DN		Dimensions(mm)
Inch	mm	L	D	D1	D2	C	T	n-φL
2"	50	120	165	125	99	19	3	4-Ø19
2.5"	65	135	185	145	118	19	3	4-Ø19
3"	80	155	200	160	132	19	3	8-Ø19
4"	100	165	220	180	156	19	3	8-Ø19
5"	125	190	250	210	184	19	3	8-Ø19
6"	150	210	285	240	211	19	3	8-Ø23
8"	200	260	340	295	266	20	3	12-Ø23
10"	250	285	405	355	319	22	3	12-Ø28
12"	300	315	460	410	370	24.5	4	12-Ø28

Company Features
1. Shenzhen Mech Valve Trading Co., Ltd. is a renowned manufacturer providing wafer type check valve for decades. We have gained a vast amount of experience.
2. Our advanced technology producing makes double check valve be of excellent performance.
3. Mech Valve always holds the strong aspiration to be a leading water pump check valve supplier. Get price!

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Every Mech is professionally designed by our experienced design team. This product will not easily cause visual fatigue

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When designing Mech , the design team invests plenty of time in market research and designs a product that is more superior than others. The brightness of the product can be adjusted to adapt to different driving environments

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Premium raw materials: Mech is made of high quality raw materials. They are supplied by our reliable partners who have signed contracts and established cooperation relationship with us for over years. The product is known for its high lumen output

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Mech shows the outstanding performance, after years of improvement in the production process. The production process is managed in an efficient manner and therefore this product is produced at a quick rate. Thanks to built-in its heat dissipation device, the product features high conversion efficiency

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Excellent craftsmanship: Mech is crafted with excellent craftsmanship which is a result of talents and skills. Its superior craftsmanship makes it high quality. This product will not easily cause visual fatigue

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The product is very durable. Made of hard materials, it is less likely to be affected or destroyed by any surrounding element. Thanks to built-in its heat dissipation device, the product features high conversion efficiency

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