SBE/2-MV1: 马来西亚的首选 Mega Valve & Fittings Sdn Bhd

详情

Product features

Minimized purge volume of only 1,3 cm³
Metal-to-metal seal to atmosphere using metal diaphragms made of Hastelloy C276
All gas-wetted parts made of stainless steel SS 316L, Hastelloy C276 and PCTFE or PVDF respectively
Fully functional even when valves are evacuated
Welded valve stem / diaphragm assembly
No parts in the gas-wetted area exposed to friction or torsional stress provide minimum particle
Embedded soft seat seal made of PCTFE or PVDF permits frequent operation without loss of tightness
Modular design for easy replacement of internal parts
Clearly legible position indication (on/off)
100 % Helium-leak-tested
Assembly in cleanroom class ISO 5.0

Technical data
Materials Body: Diaphragm: Other gas wetted parts: Valve seat:	stainles steel 1.4404 ESU (SS 316L remelted) Hastelloy C276 stainles steel 1.4404 ESU (SS 316L remelted) PCTFE or PVDF
Surface roughness optional:	R_a ≤ 0,25 µm R_a ≤ 0,18 µm
Leak rate to atmpsphere: via seat:	< 1 x 10^-9 mbar l/s He < 1 x 10^-6 mbar l/s He
Pressure range Manual valve: LP-pneumatic valve: HP-pneumatic valve:	200 bar 25 bar 200 bar
C_v-Wert	0,24 (k_v = 0,2)
Nominal size	DN 4
Cylinder connection	- acc. to DIN 477 depending on gas type - acc. to other standards (e.g. BS, AFNOR, UNI) upon request