Swing double petal clapper valvePN Nominal Pressure: 1.6Mba
Sealing Test Pressure: 1.76Mba
Strength Test Pressure: 2.4Mba
Suitable temperature: -20~135
Medium: Fresh water, Sea water, Waste water, Food stuff, Steam, All kinds of oils, All kinds of acid and alkali liquid, etc.
Main Features:DONGSHENG Dual Flap Wafer Check Valve is designed to operate with the minimum of flow restriction.
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.
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).
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
Material List| 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 |
Factory Show
Product Package
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.
