Product Overview

519 series
Differential by-pass valve. Threaded connections 3/4” (1 1/4”) F x M with union. Brass body. Brass obturator. EPDM
obturator gasket. EPDM O-Ring seals. Asbestos free NBR union seals. ABS control knob. Stainless steel spring.
Medium: water, glycol solutions. Maximum percentage of glycol 30%. Temperature range 0–110°C. Maximum working
pressure 10 bar. Setting range 10–60 kPa size 3/4” and 1 1/4”, 100–400 kPa size 3/4”.
SPECIFICATION SUMMARIES
We reserve the right to make changes and improvements to the products and related data in this publication, at any time and without prior notice.
CALEFFI S.P.A. · I · 28010 FONTANETO D’AGOGNA (NO) · S.R. 229, N.25 · TEL. [phone] R.A. · FAX [phone]
· www.caleffi.com · [e-mail] ·
© Copyright 2007 Caleffi S.P.A.
CALEFFI
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Medium-large size system
by-pass on top of risers
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Chilled water system, central by-pass
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CHILLER