Overview of Primary Product

DISCAL
®
551 series
Deaerator, version with drain. Connections for horizontal pipes 3/4” F (from 3/4” to 2”) with union. Drain 1/2” F (with plug).
Brass body. PA66G30 internal element. PP float. Brass float guide and stem. Stainless steel float lever and spring. EPDM
hydraulic seals. Medium water and non-hazardous glycol solutions excluded from the guidelines of EC directive 67/548;
maximum percentage of glycol 50%. Maximum working pressure 10 bar. Maximum discharge pressure 10 bar.
Working
temperature range 0
–110°C. Patented.
DISCAL
®
551 series
Deaerator. Flanged connections DN 50 (from DN 50 to DN 150) PN 16; to be coupled with counterflanges EN 1092-1. Weld
end connections DN 50 (from DN 50 to DN 150). Drain 1” M (with plug). Epoxy resin coated steel body. Stainless steel
internal element. EPDM hydraulic seals. Medium water and non-hazardous glycol solutions excluded from the guidelines of
EC directive 67/548; maximum percentage of glycol 50%. Maximum working pressure 10 bar. Maximum discharge pressure
10 bar. Working temperature
range 0 – 110°C. Patented.
Complete with:
- automatic air vent: brass body, PP float, brass float guide and stem, stainless steel float lever and spring;
- chrome plated brass drain cock;
- rigid closed cell expanded polyurethane foam insulation for sizes up to DN 100 (closed cell expanded PE-X for DN 125
and DN 150) and embossed unfinished aluminium external cover. Working temperature
range 0 – 105°C (0-100°C for
DN 125 and DN 150).
DISCAL
®
551 series
Deaerator, compact version. Connection for horizontal or vertical pipes with compression ends for Ø 22 copper pipe,
threaded connections 3/4” F (and 1”) for vertical pipes, threaded connections 3/4” F for horizontal pipes. Brass body.
Stainless steel internal element. PP float. Brass float guide and stem. Stainless steel float lever and spring. EPDM hydraulic
seals. Medium water and non-hazardous glycol solutions excluded from the guidelines of EC directive 67/548; maximum
percentage of glycol 50%. Maximum working pressure 10 bar. Maximum discharge pressure 10 bar. Working temperature
range 0–110°C.
SPECIFICATION SUMMARY
T
P
F
T
A
Shut-off valve
Ball valve
BALLSTOP
Thermometer
Differential by-pass
valve
Flow switch
Zone valve
Pump
AUTOFLOW
®
Flow meter
Temperature probe
Safety thermostat
Regulator
Expansion vessel
3-way valve
Pressure switch
Control pocket
Gas filter
Gas regulator
Y-strainer
Fuel shut-off valve
Anti-vibration joint
Sensor pocket
Safety valve
Backflow preventer
Automatic filling unit
Application diagram
P
A
T
F
T
T
We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice.
CALEFFI S.p.A. · S.R.229, N.25 · 28010 Fontaneto d’Agogna (NO) · Italy · Tel. [phone] · Fax [phone]
· www.caleffi.com · [e-mail] ·
© Copyright 2010 Caleffi
CALEFFI