ITEM NAME: Wafer Type Double Disc Swing Check Valve
DESCRIPTION:
1. 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 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.
