Dual Plate Wafer Type flap Check Valve

FEATURES & BENEFITS

• Double door wafer check valves permit flow in one direction only and close automatically if flow reverses.
• They are entirely automatic in action,depending upon pressure and velocity of flow to perform the functions of opening and closing.
• Check Valves offer greater flexibility and low cost in most piping systems and moreover , of its light weight , it is so convenient to install and has smaller face to face dimension than conventional swing check valve .
• These valves can be supplied to match the international standards of flange (DIN,ANSI,JIS & BS) .

DongSheng check valves when compared with order traditional isolating valve such as swing check valve offer the following advantages:

Low purchase cost

Compact design

Non-slam principle of operation

Light weight

Easy installation

Good flow characteristic and less pressure drop

Suitable for horizontal and vertical up flow

Typical Applications:

Heating air-conditioning pipe lines
High frequency lines
Fire extinguishing system
Vessel pipelines
Iron and steel industry 
Mineral, oil industry
Wood working, pulp and paper industry
Textile industry
Water and condensate lines

Applicable fluids:

Water , warm water , sea water , air and weak acid 

Application:

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Laizhou Dongsheng Valve Corporation located in Laizhou Yantai city Shandong Province, is a manufacturer of high quality valves primarily for export products are mainly OEM products since 2002.

We have 180 employees including 18 technicians, covering an area of 10200 square meters, also having advanced craftsmanship and technology. We mainly produce various check valves (for example,single disc swing check valve,double disc swing check valve,ball check valve,lift check valve, butterfly valves,diaphragm valves ,ball valves and so on). Our products are widely used in municipal water and wastewater ,oil,chemical, food and other fields.

Our entire valves are designed and manufactured according to ANSI (ASME), DIN, BS, JIS and other standard. Also, we ensure the best quality for customers, and our strict quality assurances systems are conducted throughout the entire production at the standard of ISO9001:2008 and CE. 

We try to enlarge our oversea markets and we have received a good reputation from our customers in the USA, West Europe, the UK, Southeast Asia,Spain and Russian .Besides, we always make delivery on time and will provide you with best quality and reasonable prices. 

All in all , our aim is to be your most reliable supplier. 

 Factory Show:

Our Team:

Exhibitions:

Q1: How long is the delivery time?
A1: Generally it's 5-10 days we have stock. Or it's 15-90 days depend on different product and quantity.

Q2: What about the payment term?
A2: T/T 30% deposit, balance payment after finished production before shipment. Or as discussed.

Q3: Can I have a sample order?
A3: Yes, Laizhou Dongsheng Valve agree sample order, mixed different models is also acceptable.

Q4: What's your MOQ?
A4: Laizhou Dongsheng Valve can support 1 pc order. Welcome you to check our quality.

Q5: What's your quality inspection? Do you test all your goods before delivery?
A5: Yes, 100% test. It integrates R&D, casting, production, processing, painting, assembly, testing, sales and after-sales service, and strict quality requirements, according to GB, ASME, API, DIN standard, and Laizhou Dongsheng Valve have gained ISO9001;2008, CE, and TUV certification.

Q6: Could I customize special request valve or new design products?
A6: Laizhou Dongsheng Valve have own R&D team and more than 70 researchers and engineers. Can give you the best support on quality management and techniques, meet your different needs.

Q7: How does your factory do regarding quality control?
A7: Laizhou Dongsheng Valve Quality is priority. Valve always attach great importance to quality controlling from the very beginning to the very end. Laizhou Dongsheng Valve has gained ISO9001;2008, CE, TUV, authentication.