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The new MCS series 621 test point, which has a poppet valve version with its O-ring sealing represents a leakage free solution even when using low vicosity fulids.Its special piston profile allows reduced presssure losses during the operation phase.Meanwhile, the high quality Zinc-Nickel plating used for this series makes it less susceptible to rust, corrsion.Also it has other advantages, such as the less of replacement frequency, and noiseless
