Application
Combined gas escape/supply valve is
to be used in tank top
systems and other applications for easy gas flow,
allowing
venting as well as pressurizing of vessel through the
valve.
Partly closed for CIP liquid to be cleanable and self draining.
Construction
Valve housing: Stainless
steel AISI 304 (SS 2333)
(AISI 316 on request)
Valve body:
Polypropylene
Guide for spring: Polypropylene
Valve gasket: Nitrile O-ring, non-toxic
foodgrade
materials. EPDM on request
Available in sizes: 1", 11⁄2", 2", 21⁄2", 3", NW80 and
4"
Connection: The valve is produced with weld type
ends, but can be
delivered with threaded
ends acc. to specifications, i.e. BSP, NW,
NPT,
RJT, IDF, DS or clamp.
The valve housing consists of two parts held together by
a
threaded connection. Inside there is a valve body and a
spring to keep
the body in open position. The valve body is
drilled to ensure internal
cleaning of the valve during CIP.
Dimensions Flow
1" 250 hl / h
11⁄2" 500
hl / h
2" 1500 hl / h
21⁄2" 2500 hl / h
3" 4000 hl / h
NW80 4500 hl
/ h
4" 6000 hl / h
Cleaning
The valve is cleaned in-line
during CIP of the vessel. The
liquid will close the valve but a special
drilling of the valve
body ensures cleaning of its seat and the pipe
connection
because a small amount of liquid flows through.
Depending on valve size this CIP flow is approx. 800-900
l/h.
Mounting
The valve is typically positioned as an integrated part of
the
gas/CIP-pipe at the top plate. It can be mounted at an angle
of
maximum 45 to the ideal vertical position.
Maintenance
The valve should be checked
for function with regular intervals.
The gasket to be changed every 2-3
years.
Benefits
. Full reliability
. Self
cleaning
. Compact design
. Low investment and maintenance
costs
Maximum gas flow (both directions)
at max. 0.1 bar pressure drop
Operation
The internal polypropylene
valve body is force opened by a
stainless steel spring, thus allowing full
gas capacity through
the valve in both directions.
By introducing CIP flow
against the spring force the internal
valve body will be moved to a closed
position.
