Technical Requirement:
1. Design and Manufacture:BS5163;
2. Face to Face: ISO5752-3;
3. Flange End: BS4504;
4 Test: BS5146;
информация о продукте

Main parts and materials
| Parts Name | Materials |
| Body、Bonnet | Cast iron/ductile iron |
| Disc | Cast iron/ductile iron |
| Stem | Stainless steel/brass |
| Seat Ring | Brass/stainless steel |
