Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...
Overview
Double 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).
Technical Data
Size: DN40 - DN600mm PN1.0 - 1.6MPa
Working temperature: -196℃ - +560℃
Body material: Carbon steel, Stainless steel, Alloy steel, Bronze
Stem: Stainless Steel
Spring: Stainless Steel
Seat: EPDM, NBR, Stainless Steel
Item No. | Part No. | Material |
1 | Body | A216 WCB |
2 | Disc | WCB+ENP |
3 | Stop Pin | A276 420 |
4 | Spring | Inconnel 625 |
5 | Lifting Eye | A29 1025 |
6 | Gasket | SS 304 |
7 | Gasket | SS304+Graphite |
8 | Retainer | A193 B7 |
9 | Shaft | 13 Cr |
