Best Price Check Valve

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Loading Port:: Qingdao Port

Payment Terms:: TT or L/C

Min Order Qty:: 20 sets pc

Supply Capability:: To Order pc/month

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Check Valves

Check Valves are used in pipes under pressure between Class 150~2500LB, working temperatures﹣196~600℃. They are used in industries including oil, chemistry, pharmaceutical, fertilizer, and power gene-ration to prevent the backward flux of the media.

Design Feature of Check Valve

1. The products feature a reasonable structure, reliable seal, good performance and nice modeling.

2. Either soft or hard seal can be selected for the product upon different working conditions. The sealing face is built up with Co-based carbide alloy, leaving a better wearability, corrosion and scrap resistance and a longer duration.

3. Small opening pressure, the disc can be opened fully with a very small pressure differential.

4. Inside-set bolt-bearing structure reduces leakage and reliable use.

5. Class≥1500LB, the middle cavity uses a self-tightening sealing structure to have the sealing performance reinforced along with the pressure rise so as to ensure the sealing performance.

6. Different parts materials and different sizes for flange, butt-welding are available for sensible combination according to different working facts and customers' requirement

Technical Data of Check Valve

Size	DN40-DN600
Face to Face	DIN 3202 F6
Flange Drilling	EN 1092-2 PN16
Inspection and Test	ISO 5208

﹡For all available general design, face to face standard and flange drilling,please kindly contact CNBM directly.

Materials of Parts

Parts	Description	Material
1	Body	GG25
2	Seat Ring	Brass
3	Disc Ring	Brass/EPDM
4	Disc	GG25
5	Hanger	GGG50
6	Hanger Pin	Stainless Steel
8	Cover Gasket	Graphite with Soft steel
9	Cover	GG25

﹡For other material request,please kindly contact CNBM directly.

Dimensions of Check Valve

Size(DN)	L	D	D1	D2	b	n-d	H	W.T(kg)
40	180	150	110	84	18	4-19	110	9
50	200	165	125	99	20	4-19	130	13.4
65	240	185	145	118	20	4-19	140	17.7
80	260	200	160	132	22	8-19	150	20.8
100	300	220	180	156	24	8-19	160	29.3
125	350	250	210	184	26	8-19	190	47
150	400	285	240	211	26	8-23	210	67
200	500	340	295	266	30	12-23	250	118.7
250	600	405	355	319	32	12-28	310	171.9
300	700	460	410	370	32	12-28	340	232.5
350	800	520	470	429	36	16-28	450	330
400	900	580	525	480	38	16-31	520	460
450	100	640	585	548	40	20-31	550	580
500	1100	715	650	609	42	20-34	590	700
600	1300	840	770	720	48	20-37	680	780

The producing department of Check Valve

Check Valve

The deatail and the package

Check Valve

Q: What's the function of the small check valve on the deep well pump? Solve!When the deep well pump works, it does not move inside! Under great pressure！ There is a hissing sound when the deep well pump doesn't work! The air is in! Will it lead to the water in the room? There's a lot of air in it!: This valve is to stop the pump when the intake, through the intake of water to cut off the backflow, to prevent water from being returned to empty, the air can not enter the valve above the part of the water pipe, rest assured

Q: Can the check valves fit two in one tube? One up, the other down: Launching, then you'd like to have a Sheung Shui at the front of the Sheung Shui

Q: What is the function of the check valve installed in the water meter before entering the residential water?: Generally installed after the water meter. The main reason: if the water point is higher than the water meter installation position, once the pipe network in the absence of water, the remaining water in the pipeline will flow in the direction of the water meter in turn. This will cause the water meter to reverse and cause damage to the water meter. A check valve is installed after the water meter, so that the situation can be avoided.The main function of the check valve is to prevent the backflow of the medium, prevent the reverse of the pump and drive motor, and release the container medium. The check valve can also be used to provide a supply to the auxiliary system where the pressure may rise above the system pressure.

Q: How to prevent the backflow valve of medium: Among them, the check valve belongs to this type of valve, which includes swing check valve and lift check valve. The swing check valve has a hinge mechanism and a gate like valve free against the inclined seat surface. In order to ensure that the valve can reach the appropriate position of the seat surface at any time, the disc is designed in the hinge mechanism so that the disc has enough swing space to make the disc real and comprehensive contact with the valve seat. The disc can be made of either metal or leather, rubber, or synthetic coverage, depending on performance requirements. The swing check valve is almost completely open and the fluid pressure is almost unimpeded, so the pressure drop through the valve is relatively small. The check valve of the lift check valve is located on the valve seat sealing surface of the valve body. In addition to this valve disc is free to lift, like the rest of the cut-off valve, the fluid pressure valve from the valve seat sealing surface lift, medium return led down to the valve seat, and cut off the flow. Depending on the service conditions, the disc can be of all metal construction or in the form of a rubber pad or rubber ring on the valve frame. The same as the cut-off valve, lift check valve fluid through the channel is narrow, so the check valve by lifting the pressure drop than the swing check valve a little bigger, and swing check valve flow restrictions very little.

Q: What are the types of check valves?: Taiwan reasonable, this may not have domestic, if you can name, you can call three one-way valve, we can see in accordance with the structure of the spring type.Front Ze valve provides: hope to adopt!!!I hope I can help you.

Q: What does the swing check valve "h44h-16" mean?: Check valve refers to rely on the flow of the media itself and automatically open and close the valve flap, used to prevent media backflow valve, also known as check valve, one-way valve, counter flow valve, and back pressure valve. The check valve belongs to an automatic valve, whose main function is to prevent the backflow of medium, prevent the reverse of pump and drive motor, and release the container medium.

Q: How to install fire fighting pipe and flue fire check valve?: 4, the installation of flue should each layer as bearing, bearing steel 2 root diameter over 14mm?.5, after the installation of the flue, in each flue check valve of the reserved installation of fire type flue check valve, with special glue mixing cement, coated with a check valve installed in the valve hole edge, and then back to the reservation in check at.6, the construction should be reserved at all levels of the hole, covered with a cover plate, to ensure safety in construction, to prevent construction waste fall into the flue.

Q: What is the difference between the check valve h64h-250 and the h61y-250?: According to JB/T308-2004 "valve type programming method"One is the swing check valve (4), and the sealing surface is Cr13 (H)One is the lift check valve (1), and the sealing surface is made of Y

Q: Check valve authentication information: If you need surface processing, please contact the manufacturer.ISO 9001-2008Check-All valve company has ISO9001-2008 certification. Our certificate number is: FM 40858, which was issued by the British Standards Institute (BSI). The certificate indicates that the design, manufacture and distribution of all Check-All products comply with the requirements of ISO-9001-2008. This also means that when you order the Check-All valve, you will be assured of a high quality check valve on time.NACE Compliance certification of the American Society of corrosion protection engineersMany Check-All valve products comply with NACE MR0175/ISO 15156 and NACE MR0103. Contact manufacturers can get.

Q: I have to use a check valve to prevent return water due to pipe installation problems due to regular water supply. But the recent discovery of a running water phenomenon, just on a full tank of water slowly from the pipeline flow away, but not all go, a flow did not flow, time is not the same, but sometimes sometimes does not flow, this is going on, ask professional personage answer: The problem can't be solved: if you change the pipe, you'll have a vertical check valve

We are one of the largest enterprises in China, integrating research, development, production, marketing and commercial services of stationery.And it became the largest manufacture of the writing instruments in Asia, with the scale of production ranked the first in the consecutive 12 years in China, and the sales ranked the third in the global industy, and the strength ranked within the eighth.

1. Manufacturer Overview

Location	Beijing,China
Year Established	1986
Annual Output Value	Above US$100 Million
Main Markets	Africa, Asia, America, Europe, Middle East, West Europe
Company Certifications

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port	Beijing
Export Percentage	41% - 50%
No.of Employees in Trade Department	498 People
Language Spoken:	English,Chinese
b) Factory Information
Factory Size:	42000 square meters
No. of Production Lines	Above 20
Contract Manufacturing	OEM Service Offered；Design Service Offered
Product Price Range	Average