Basic Info.
Model NO.
dual plate valve
Function
Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
Sealing Form
Gland Packings Globe Valve
Flow Direction
Unidirection
Application
Industrial Usage, Water Industrial Usage
Valve Body Material
Cast Iron Body
Valve Surface
Epoxy Coated
Valve Plate Materials
Stainless Steel Flappers
Pressure Rating
16 Bar Pressure Rating
Transport Package
Wooden Pallet, Plywood Case, etc
Specification
Passed the CE, ISO9001 and SGS Certification
Origin
Laizhou Yantai City, Shandong Province, China
Product Description
Wafer Type Double Disc Swing Check Valve1. Working pressure: 1.0/1.6/2.5 Mpa
2. Working temperature: NBR 0 ° C ~ +80 ° C; EPDM -10 ° C ~ +120 ° C; VITON -20 ° C ~ +180 ° C
3. Face to face: DIN3202 K3, ANSI 125/150
4. Flange standards: EN1092-2; ANSI 125/150 Etc.
5. Testing: DIN3230; API598
6. Medium: Sewage, Seawater, Food stuff, all kinds of oil, acid or alkaline liquid etc.
Product Description
Nominal Pressure: PN1.0MPa PN1.6MPa
Suitable Media: Fresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Acids, Oils, etc.
Suitable Temperature: -15° C~150° C
Nominal Diameter: 50~700mm
Product Introduction
Wafer Butterfly Non-return Valve is designed to operate with the minimum of flow restriction. The product has good non-return performance, safety and low flow resistance coefficient, which is used widely for petroleum processing, chemical engineering, food, medicine, textile, paper making, water supply, metallurgy and energy engineering systems, using as valves.
Product Features
(1) Small in volume and light in weight. Compact construction and easy maintenance.
(2) Dual discs can close quickly automatically acting on the elastic torque.
(3) The action of quick close can ward off media' flow backwards and eliminate obviously water hammer action.
(4) Small body construction length dimension, good rigidity and safety.
(5) The twin spring loaded half disc operate with the pipeline flow and reseal back against the rubber disc seating providing a positive shut off against any back flow. The resilient seating prevent a slamming action.
(6) Natural Rubber sealing with no leakage under the pressure test.
(7) These valves can be supplied to match the international standards of flange (DIN, ANSI, JIS & BS).
Materials of Main Parts:
NO. | Parts | MATERIAL |
1 | Body | Cast iron GG25 / Stainless Steel |
2 | Disc | AISI 316 / chrome coated GGG40 |
3 | Resilient seat | EPDM |
4 | Hinge pin | AISI 316 |
5 | Spring | AISI 304 |
6 | Retainer screw | Carbon steel |
7 | Disc bearing | Teflon |
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:
EXHIBITION:
FQA:
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.
Address:
Haizheng village, Shahe Town, Laizhou city, Shandong province
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Tools & Hardware
Management System Certification:
ISO 9001
Company Introduction:
Laizhou dongsheng valve co.,Ltd is a professional valve plant, is a collection of research and development, design, the manufacture, the sale of integrated specialized company. Our main products are series of check valves, including all kinds of single disc swing check valve, double disc swing check valve, flange and threaded ball check valve, flange and wafer silent check valve, stainless steel lift check valve, diaphragm valve, ball valve and butterfly valve etc.
We hold a set of scientific and strict management system, strong technical force, advanced processing equipment and reasonable technical progress, high technology and quality technicists and workers. We have 200 employees, and our factory area is 30000 square meter. We always hold "Do to the quality of survival, to the credibility of development.", so we produce every product carefully and treat every customer sincerely. Our products are used to open and close the pipeline of oil, chemical, water, gas and food etc. Our products are exported mainly to Europe, America, Africa, Southeast Asia, the Middle East and Russia etc. Our products are praised by foreign and domestic customers.
We own good quality certificated by ISO9001 and CE. Welcome friends from home and abroad to visit us. And we look forward to having a sincere and favorable cooperation with you.