Cap nut 20 Ni with a locking hole is used for mounting together with a fitting to a water meter. In this case, the tightness of the connection is ensured by a seal. Made of high-quality brass LS-59-1 by hot pressing or injection molding They are used in non-aggressive environments (water, saturated steam, combustible gas, air), at temperatures from +1 to +175 ° C and nominal pressure PN 1.0 MPa (10 kgf / cm2). Nickel plating provides anti-corrosion protection and abrasion resistance
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