Advertisement
Quick Links
CALEFFI
www.cale
Adjustable differential pressure by-pass valve with graduated scale
© Copyright 2018 Calef fi
These items are designed for use in closed hydronic systems. Do not use in plumbing
applications. These items do not meet the low-lead plumbing standards of U.S. and
Canada.
SAFETY INSTRUCTION
This safety alert symbol will be used in this manual to draw attention to safety related
instructions. When used, the safety alert symbol means
YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY
RESULT IN A SAFETY HAZARD.
.com
Function
The differential pressure by-pass valve is used in systems with a
fixed speed circulating pump supplying several zones controlled
by two way zone valves. This valve ensures that the head pressure
of the pump is proportional to the number of two way valves being
closed. It will bypass the differential pressure created by the pump
as the zone valves close, thus eliminating water hammer noise.
Product range
Code 519502A By-pass with flow up to 9 gpm. Size 3/4" MNPT
Code 519566A By-pass with flow up to 9 gpm. Size 3/4" press
Code 519599A By-pass with flow up to 9 gpm. Size 3/4" Sweat
Code 519600A By-pass with flow up to 40 gpm Size 1" FNPT
Code 519609A By-pass with flow up to 40 gpm Size 1" Female
Code 519700A By-pass with flow up to 45 gpm Size 1 1/4" FNPT
Code 519709A By-pass with flow up to 45 gpm Size 1 1/4" FNPT
Technical characteristics
Materials
Body:
Valve plug:
Valve plug gasket:
O-Ring seals:
Union seals:
Control knob:
Spring:
Performance
Suitable fluids:
Max percentage of glycol:
Temperature range:
Maximum working pressure:
Flow rates:
Setting range:
union inlet x 3/4" MNPT union outlet
union inlet x 3/4" press union outlet
union inlet x 3/4" Sweat union outlet
inlet x 1" MNPT union outlet
NPT x 1" sweat outlet
inlet x 1 1/4" MNPT union outlet
inlet x 1 1/4" Sweat union outlet
ATTENTION! BECOME ALERT!
38482.05
519 Series
brass
brass
peroxide-cured EPDM
peroxide-cured EPDM
asbestos free NBR
ABS
stainless steel
water, glycol solutions
30%
32–230°F (0–110°C)
150 psi (10 bar)
3/4" flow up to 9 gpm
1" flow up to 40 gpm
1 1/4" flow up to 45 gpm
1 - 6 m w.g. (2 - 10 psi)
Advertisement
Related Manuals for CALEFFI 519 Series
Summary of Contents for CALEFFI 519 Series
- Page 1 CALEFFI www.cale .com 38482.05 Adjustable differential pressure by-pass valve with graduated scale 519 Series © Copyright 2018 Calef fi Function The differential pressure by-pass valve is used in systems with a fixed speed circulating pump supplying several zones controlled by two way zone valves. This valve ensures that the head pressure of the pump is proportional to the number of two way valves being closed.
- Page 2 WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. CAUTION: All work must be performed by d personnel trained in the proper application, installation, and maintenance of systems in accordance with all applicable codes and ordinances.
- Page 3 Installation The di erential pressure by-pass valve can be tted in any position, respecting the ow direction indicated by the arrow on the valve body. In systems with a traditional boiler it is normally tted between the system ow and return ends, which allows the control of the pressure and the passage of a minimum ow through the heat generator.
- Page 4 Service Instructions There is no service required for the di erential by-pass valves. Leave this manual for the user. Scan to view 7-19-18 · Caleffi North America, Inc. 3883 West Milwaukee Road Milwaukee, WI 53208 Installation Tip T: 414.238.2360 F: 414.238.2366...