Precise
to the full stroke
KIESELMANN
overflow valves are used to relieve pressure in closed systems or to limit the
delivery pressure in conventional pump circuits. As soon as the delivery
pressure exceeds the set value, the valve opens and the escaping medium can be
discharged to the outside or returned in a controlled manner. A flow-optimised
plate geometry ensures precise opening and closing behaviour as well as high
flow capacity.
The
opening pressure can be adjusted by means of a hexagonal head. This is
secured against unintentional readjustment. Pneumatic ventilation allows
the valves to be opened on full stroke, e.g. for CIP cleaning. The
KIESELMANN range of pressure relief valves is available in the modular system
of the KI-DS valve range in the same way as the single-seat valves, as elbow, T
and loop valves. It fulfils all aspects of
hygienic
design.
End
position feedback or control heads can be mounted directly onto the drive. If
the setting range of the drive is not sufficient, you can simply
retrofit it and expand it with a larger
drive. Optionally, a purely pneumatic version is also available. Here, the
closing pressure of the overflow valve is defined by a pressure superposition
of the
double-acting actuator .
The setting of the overlay pressure or the response pressure is then carried
out via an external filter pressure regulator.
• Optional: Purely pneumatic actuator
• No external movable components – no risk of injury
• Easy mounting of the end position feedback (retrofittable)
• 6 exchangeable actuator sizes
• Standard version is with pneumatic lifting function
Technical data
Sizes:
DN 25–150 1"–4"
Seals:
EPDM SIP 140°C,
30 min FDA compliant
NBR SIP
130°C, 30 min FDA compliant
Nominal Pressure:
PN 16
Materials:
in product contact 1.4404 / AISI 316L
not in product contact
1.4301 / AISI 304
Product-contacting surfaces
Ra < 0.8 µm e-polished
Actuator:
Spring return, adjustable, optional end position feedback
Housing connections:
Welding ends: EN
10357, Series B DIN 11866, Range C
Conical couplings: DIN 11851
Threaded couplings: DIN11851
Control air:
5.5-8 bar
Operating temperature:
Continuous: 120
°C
Cleaning (CIP): 85 °C
Sterilisation (SIP): 145 °C
