... operated freely in normal or low tempe. Plug Valve The body is forged by high-quality alloy ... 42MPa, 70MPa, 105MPa(6000,10000,15000psi).The cock valve can be used in the normal temperature, low ... temperature and sulfide gas condition.Features:1. 3"plug valve is fixed with worm-wheel type ... limiter on cock cover shows clearly the valve is entirely opened or closed,which can limited ...