Spectropur Purge block SBE3

Purge block for hazardous gases and ultra high purity gases from grade 6.0
Minimized purge volume of only 2,6 cm³
Capillary tube allows purging into the cylinder valve
Metal-to-metal seal to atmosphere
All gas-wetted parts made of stainless steel SS316L, Hastelloy C276 and PCTFE or PVDF respectively
Fully functional even when valves are evacuated
Minimum particle generation, as no parts are exposed to friction and no spring is in the gaswetted area
Embedded soft seat seal made of PCTFE permits frequent operation without loss of tightness
Modular design for easy replacement of internal parts
Clearly legible position indication (on/off)
Electro-polished surfaces (gas wetted)
100 % Helium leak tested
Shorter purge cycles due to minimized dead space
Assembly in clean room class ISO 5.0

Working pressure
Manual valve:	max. 300 bar
Pneumatic valve:	max. 25 / 100 / 200 / 300 bar
Materials
Body:	Stainless steel 1.4404
Diaphragms:	Hastelloy C276
Other gas-wetted parts:	Stainless steel 1.4404
Valve seat:	PCTFE or PVDF (gas depending)
Surface roughness:	Ra,max ≤ 0.25 μm
Surface roughness (gas-wetted area):	Ra,Avg ≤ 0.18 μm
Temperature range:	Stainless steel
Leak rates
to atmosphere:	≤ 10-9 mbar l/s He
via seat:	≤ 10-6 mbar l/s He
cv-value:	cv = 0.13 (kv = 0.11)
Nominal size:	DN 3
Weight:	.7 kg with manual valves

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