relief valve Hygienic; series RV64; with twist lifting; with bellows; body AISI 316L; valve size DN20, inlet/outlet clamp connection DIN 32676 DN20/DN25; DN 18mm; pressure range 1,5...4,5bar; seal EPDM-FDA; medium temperature -40…+170°C; FDA-certification CFR Title 21; for seals; ATEX-certificate according to directive 2014/34/EU; surface roughness Ra 0,8µm
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