The Richter NKS/F Butterfly Valve is ISO/DIN design. The NKS/F series features maintenance-free, self-adjusting packing stem seal. Face-to-face according to DIN EN 558-1 and ISO 5752 series 1, API 609 Table 1, MSS SP-67 Table 3. The NKS/F are available manual or actuator operated.
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