BFEA Cheap Check Valve

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Loading Port:: Beijing 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

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

The package of Check Valve

Check Valve

Q: What is the structure of the check valve of the screw air compressor?: Work process: air pre filter, and then through the air filter and the air inlet controller into the mixing chamber and the compression screw lubricating oil, continuous linear by asymmetric rotor two, compression. The compressed oil and gas mixture enters the tank and the separation system for three levels of separation (centrifugal, self weight, and fine separation). The separated compressed air is discharged after the cooler is cooled, and a reliable pressure switch system controls the exhaust pressure. When the machine is running, the screw compressor run oil system by pressure difference automatic circulation, without pump. When starting, the minimum pressure valve is closed to ensure the minimum pressure required for the lubrication oil circulation. In addition to lubrication, the oil also acts as sealing, cooling and reducing noise. High efficiency oil and gas separator and high efficiency cooler ensure high quality compressed air.

Q: What's the use of the check valve?: 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: Check valve h42h-dn80 what does that mean?: According to the provisions of the JB/T 308-2004 valve type programming method:H = check valve4 = connection: flange2 = structure form: vertical lifting typeH = sealing surface material: Cr13 stainless steelDN80== nominal diameter: 80mm

Q: In the water supply system, water pump and water pump without check valve, a water output to another without pump water pump, effect of rotation, it will cause what kind of damage to the pump?: The main function of the check valve is to prevent water hammer, and the impact of water hammer on the drainage system is fatal.

Q: What is the function of the check valve on the air compressor?: It can cause damage to the compressor (usually called liquid hammer). Also, the exit may be frosted by returning air.

Q: How can the PPR pipe be connected to the check 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: What's the difference between the h76x check valve h77x?: H76x check valve h77x distinction: h76x check valve is a clamp type double valve swing structure, h77x is the clamp butterfly type structure.

Q: How to install the water pipe check valve?: If the pipe in the installation position is vertical, you can choose the swing type and pipe type!If the installation position of the pipe is horizontal, you can choose the lifting type!Lift check valve opens and stops at the fastest speed!The swing check valve has the least resistance!

Q: How does the check valve work?: Only one-way flow, blocking the valve seal, liquid can not be returned.

Q: How can the fast closing noise check valve prevent water hammer?: Quick closing silencing check valve prevents water hammer principle:Once the pump stopped, check valve spool in the spring or other auxiliary device for double end under the action of force balance in advance to the closed position, can greatly reduce the amount of water and initial water reflux falling height, water hammer force is calculated by gravity superposition, reduce the amount of return equal to the reduction of gravity. Fall short height reduces the inertia time is also relatively reduced speed, and can prevent the formation of destructive or reduce water hammer water hammer.Quick closing and silencing check valve and silencing check valve is to rely on the flow of the medium itself automatically open and close the valve, backflow valve to prevent the media, also known as check valve, check valve, silent check valve reflux 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. The check valve can also be used to provide a supply to the auxiliary system where the pressure may rise above the system pressure. The check valve can be mainly divided into swing check valve (rotating by gravity center) and lift check valve (moving along the axis).

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