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NK Butterfly Valve

Richter butterfly valves have proved successful in a wide variety of process plants.

Shut-off, throttling and control of corrosive, hazardous and pure liquids, gases and vapors
FDA-compliant, wetted materials for use in food processing, pharmacy and similar fields.
Also suitable for free-flowing, low-abrasive bulk materials in the version with a metallic disc/stem unit.
The compact butterfly valves are advantageous in confined spaces.
Butterfly valves are economical valves: easy to install and dismantle, attractively priced, compact.

Main Features

Soft-sealing and gas-tight, both with lined and metallic disc/stem unit
Leak-tight against the atmosphere in compliance with the German Clean Air Act (TA-Luft). (series NKS, NKL additionally certified to ISO 15848)
Optional with safety stuffing box (series NKS, NKL)
Very low friction values and torques during opening and closing due to the combination of a PFA disc/stem unit with a PTFE body
Leakage rate in the seat to DIN EN 12266, leakage rate A(formerly DIN 3230 T3): gas-tight, 0 bubbles
Almost equal-percentage characteristics

Specifications

1) Size range: 2" - 40"
2) Pressure Rating: Vacuum to 10bar (145 psi)
3) Temperature Rating: -40°C to 200°C ( -40°F to 400°F).
4) Materials

Applications

Shut-off, throttling and control of corrosive, hazardous, pure and solids-laden media in chemical, pharmaceutical, and other industries
Distribution and treatment of wet Cl2 gas and NaOH in chlor-alkali electrolysis
Distribution and treatment of H2SO4, HCl, NaOH, NaCl, chemical effluent