Structural features:

1. The shell is cast with resin sand, X-ray flaw detection and surface magnetic particle flaw detection, and the inner quality of the casting is good;

2, Valve seat and gate sealing surface using plasma spray welding machine automatic surfacing cobalt based hard alloy, sealing surface hardness uniform, HRC40-45, wear resistance, corrosion resistance, abrasion resistance, long service life;

3, elastic single ram, elastic double ram design, to meet the requirements of different working conditions;

4, stem surface hardening and corrosion resistance treatment, easy operation, packing box seal reliable;

5, corrosion inhibition packing, special conditions using composite packing, to ensure no leakage;

6, can be matched with a variety of domestic and imported electrical equipment, to meet the DCS control requirements.