6 pressure equipment for gases, vapors, liquids and grained goods; namely, manually-operated metal shut-off, throttle and regulator valves, first, and gates; metal fittings for steam production and cooling facilities; namely, manually-operated valves and throttles; metal fittings for off-shore technology; namely, manually-operated pressure reduction valves and throttles for use on platforms and under water; metal fittings for nuclear plants; namely, manually-operated bellows, valves for radioactive gases and liquids, and metal fittings for chemical and petro chemical facilities for explosive gases; namely, manually operated valves and throttles for explosive gases