List of materials for main valve components of hydraulic control valve

1: Screw plug: stainless steel / Brass / Bronze

2: Bolts and washers: stainless steel

3: Valve cover: ductile iron + powder coating / stainless steel / Bronze

4: Guide sleeve: stainless steel / Bronze

5: Spring: stainless steel

6: Lock nut: stainless steel / Bronze

7: Diaphragm plate: ductile iron + powder coating / stainless steel / Bronze

8: Diaphragm: nylon reinforced NBR / EPDM / Viton

9: Support frame: ductile iron + powder coating / stainless steel / Bronze

10: Seal ring: NBR / EPDM / Viton

11: Stem: stainless steel / Bronze

12: Guide plate: stainless steel / Brass / Bronze

13: Seat: stainless steel / Brass / Bronze

14: Valve body: ductile iron + powder coating / stainless steel / Bronze