Gas shut-off valves to prevent leakage are built into gas meters that measure the amount of gas used in households. Okamoto Seisakusyo makes the parts for such shut-off valves. Okamoto Seisakusyo is dedicated to ensuring the precision and quality of these products because of the role they have in protecting human lives.

They use an electromagnetic stainless steel as the base material, cutting it to specification with a combined NC machine.

The surface roughness of the gas seal part is no greater than 3.2 S, and the flatness is precise to one micrometer.

When Okamoto Seisakusyo’s touch panel control parts are used to adjust the amount of gas in a stove, including when turning the stove on and off, a stepping motor is activated to perform the adjustment.

The material used for these parts is brass. They start from odd-shaped pieces and cut to specification using a combined machine.

To ensure the gas seal remains solid, a surface roughness on both sides of 3 S or less and a flatness of 2 micrometers or less are required.