PFA-lined ball valve for highest purity use
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Corrosion Resistant Products product story
Edited by the Engineeringtalk editorial team
Sep 28, 2001
A new range of PFA-lined, stainless steel-bodied ball valves from CRP have a blow out-proof stem construction that is effective even in the unlikely event of the top works being dismantled in service
Environmental cleanliness is paramount in pharmaceutical and semiconductor clean rooms, where atmospheric purity is as important as process hygiene.
A new range of PFA-lined, stainless steel-bodied ball valves from Corrosion Resistant Products (CRP) is designed for process industry applications such as these - and for other highly corrosive environments.
Reliability and safety are also key issues in process plant that is subject to frequent solvent and chemical cleaning regimes.
CRP's Atostar full port valves have a blow out-proof stem construction that is effective even in the unlikely event of the top works being dismantled in service.
PTFE reverse chevron packing rings in a deep stuffing box provide a dynamic seal, giving long-term protection against fugitive emissions.
The range features stainless steel, investment cast valve bodies.
These are lined with a thick coating of PFA, which is mechanically locked in place by T-slots and locking grooves, giving unsurpassed performance, under full vacuum conditions.
It also makes the valves eminently suitable for a range of process conditions from -290C up to 2000C, and pressures up to 19.6 bar.
Tight manufacturing tolerances reduce body cavity space to a minimum, lessening the risk of product cross-contamination problems.
The use of PTFE stem seal packing, and integrated PTFE/graphite bushing on the gland follower, guarantees low turning torque for manual operation.
Automatic valve actuation can be fitted, if required whilst the valve is in service, thanks to the use of an ISO 5211 universal mounting pad.
A proven anti-static device protects against electrostatic discharge.
Atostar valves meet ASME, DIN and JIS standards and the range is available in port sizes from 25mm up to 100mm, with a choice of V-port or C-port balls.
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