Welcome to the website of Hebei Diefei Valve Co., Ltd.!
E-mail: sales@diefeivalve.com WhatsApp: 8613733290323
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DieFei Valve
Original Source, 34 Years Factory, Favourable Price, Stable Quality & Fast Delivery
DieFei Valve company main produce: Stainless Steel Wafer Dual-Plate Check Valve
Stainless Steel Wafer Dual-Plate Check Valve
Material:
The body material: CF3/CF8/CF8M
The disc material: SS304/SS316
The stem/spring materia: SS416/SS314
The seat material: NBR/EPDM/VITON
Usage:
They are used for pipe of transporting water with such medium as water sewage and seawater.It can avoid media flowing backwards and prevent damaging water hammer,guarantee the safety using of pipes.
Features:
1.The products are new structure .small and light weight
2.Reliable sealed,endurable open-close,erar-resisting,long life.
With less flowing resistance than old check valve and obvious enerfy-saving effect
ABOUT DIEFEI VALVE
Hebei Diefei Valve Co., Ltd. which was established in 1986, is a specialized factory gathering the medium and lower pressure valve developing, manufacturing and selling together. We established Crane Ningjin Valve Co., Ltd with Crane Valve USA in 1995.
Our main products are Butterfly valve, Check Valve, Gate Valve, Ball Valve, Valve Actuator and so on. These valves are available extensive to the pipelines of oil, metallurgy, chemical industry, medical, light textile, paper-making, water and electricity ,tap water company ,central air conditioning system etc.
We own perfect manufacturing process and testing way of casting, matching and assembling. We are authorized the Quality Management system certificate of ISO9001:2015, Environmental Management system certificate of ISO14001:2004,CE Certificate and the Approval of Manufacturer Certificate of DNV. Our company products are mainly sold to many large-scale agglomerations like CNPC, Sinoepc, CSPC, DAIKIN , Haier, Midea and etc. And exported to USA, Europe, Africa, Southeast Asia, Taiwan etc countries and area.
Our company has 210 employees included 38 technical personnel. We are capable of producing 100 thousand valves per year. We have got the ISO 9001 certificate & CE approved certificate and approved WRAS/ WRC-NSF certification.
The first step is body cast. We have our own casting factory.We have enough power to offer you the best quality products.
This is our machining processing workshop.
This is our painting workshop.We can offer you the valve expoy coted or paiting.The color you can choose.
This is our store.We will purchase enough parts to store. Before packing ,the valve will be tested.
This is our install work shop.
Quality Control
1 conditions
The provisions of this chapter of the valve manufacturing quality control requirements, the buyer shall, according to the provisions of annex B NDE special requirements.
2 measuring and test equipment
General 2.1
Used for testing, test (or valve testing), should according to the material equipment manufacturer prescribed time intervals marks, control and calibration.
Measurement instruments. 2.2
The instrument used in measuring dimension, should according to the provisions of the method to control documents and calibration.
2.3.0 pressure measurement
2.3.1 type and accuracy
The valve test pressure measuring gauges or pressure sensor is full range, its accuracy should be within ± 2.0%.
2.3.2 measurement range
Measuring pressure measuring pressure measurement shall be in the range between 25 and 75%.
2.3.3 calibration procedures
Pressure measuring instruments shall be in full range 25%, 50%, 75% and 100% position, regular use standard pressure measurement device or farmar test device for calibration.
2.4 temperature measurement
If needed, temperature measurement can be displayed or logged three degrees Celsius (5 degrees f).
3 valve inspection and testing personnel qualification
3.1 NDE personnel
NDE engineers at least ASNT shall obtain SNT - TC - 1A Ⅱ provisions or EN 473 level required qualifications.
Visual inspection personnel should press ASNT SNT - TC - 1A or EN 473 requirements, each within 12 months, a visual inspection.
3.2 welding inspector
The welding operation and welding products, the visual inspection personnel shall obtain the AWS QC1, or equivalent, or factory written training outline the required qualifications and proved.
4 repair welding NDE
In defect removal later start repairing before welding, dug surface applied magnetic powder (MT) or liquid penetrant testing (PT) method of detection.
The pressure on repair welding applications of MT or PT testing method, the acceptance criteria shall conform to the provisions of written documents.
If the buyer has a regulation, appendix B NDE additional requirement YuXiuLi welding shall apply
Certificate
OEM Services
Our company can offer OEM service according to the customers require.
We have a long history of offering OEM service.We have done OEM for Brazil,Italy,South Africa and so on.We have skilled technology to make customer satisfaction.
Original Source, 34 Years Factory, Favourable Price, Stable Quality & Fast Delivery
DieFei Valve company main produce: Stainless Steel Wafer Dual-Plate Check Valve
Stainless Steel Wafer Dual-Plate Check Valve
Material:
The body material: CF3/CF8/CF8M
The disc material: SS304/SS316
The stem/spring materia: SS416/SS314
The seat material: NBR/EPDM/VITON
Usage:
They are used for pipe of transporting water with such medium as water sewage and seawater.It can avoid media flowing backwards and prevent damaging water hammer,guarantee the safety using of pipes.
Features:
1.The products are new structure .small and light weight
2.Reliable sealed,endurable open-close,erar-resisting,long life.
With less flowing resistance than old check valve and obvious enerfy-saving effect
ABOUT DIEFEI VALVE
Hebei Diefei Valve Co., Ltd. which was established in 1986, is a specialized factory gathering the medium and lower pressure valve developing, manufacturing and selling together. We established Crane Ningjin Valve Co., Ltd with Crane Valve USA in 1995.
Our main products are Butterfly valve, Check Valve, Gate Valve, Ball Valve, Valve Actuator and so on. These valves are available extensive to the pipelines of oil, metallurgy, chemical industry, medical, light textile, paper-making, water and electricity ,tap water company ,central air conditioning system etc.
We own perfect manufacturing process and testing way of casting, matching and assembling. We are authorized the Quality Management system certificate of ISO9001:2015, Environmental Management system certificate of ISO14001:2004,CE Certificate and the Approval of Manufacturer Certificate of DNV. Our company products are mainly sold to many large-scale agglomerations like CNPC, Sinoepc, CSPC, DAIKIN , Haier, Midea and etc. And exported to USA, Europe, Africa, Southeast Asia, Taiwan etc countries and area.
Our company has 210 employees included 38 technical personnel. We are capable of producing 100 thousand valves per year. We have got the ISO 9001 certificate & CE approved certificate and approved WRAS/ WRC-NSF certification.
The first step is body cast. We have our own casting factory.We have enough power to offer you the best quality products.
This is our machining processing workshop.
This is our painting workshop.We can offer you the valve expoy coted or paiting.The color you can choose.
This is our store.We will purchase enough parts to store. Before packing ,the valve will be tested.
This is our install work shop.
Quality Control
1 conditions
The provisions of this chapter of the valve manufacturing quality control requirements, the buyer shall, according to the provisions of annex B NDE special requirements.
2 measuring and test equipment
General 2.1
Used for testing, test (or valve testing), should according to the material equipment manufacturer prescribed time intervals marks, control and calibration.
Measurement instruments. 2.2
The instrument used in measuring dimension, should according to the provisions of the method to control documents and calibration.
2.3.0 pressure measurement
2.3.1 type and accuracy
The valve test pressure measuring gauges or pressure sensor is full range, its accuracy should be within ± 2.0%.
2.3.2 measurement range
Measuring pressure measuring pressure measurement shall be in the range between 25 and 75%.
2.3.3 calibration procedures
Pressure measuring instruments shall be in full range 25%, 50%, 75% and 100% position, regular use standard pressure measurement device or farmar test device for calibration.
2.4 temperature measurement
If needed, temperature measurement can be displayed or logged three degrees Celsius (5 degrees f).
3 valve inspection and testing personnel qualification
3.1 NDE personnel
NDE engineers at least ASNT shall obtain SNT - TC - 1A Ⅱ provisions or EN 473 level required qualifications.
Visual inspection personnel should press ASNT SNT - TC - 1A or EN 473 requirements, each within 12 months, a visual inspection.
3.2 welding inspector
The welding operation and welding products, the visual inspection personnel shall obtain the AWS QC1, or equivalent, or factory written training outline the required qualifications and proved.
4 repair welding NDE
In defect removal later start repairing before welding, dug surface applied magnetic powder (MT) or liquid penetrant testing (PT) method of detection.
The pressure on repair welding applications of MT or PT testing method, the acceptance criteria shall conform to the provisions of written documents.
If the buyer has a regulation, appendix B NDE additional requirement YuXiuLi welding shall apply
Certificate
OEM Services
Our company can offer OEM service according to the customers require.
We have a long history of offering OEM service.We have done OEM for Brazil,Italy,South Africa and so on.We have skilled technology to make customer satisfaction.
