Function
The FlowCal™ automatic flow balancing valve maintains a
constant fixed flow rate within varying system differential
pressure ranges. Operation is fully automatic requiring no
manual adjustment. The 121 series utilize an exclusive,
interchangeable flow cartridge, made of anti-scale, low
noise polymer for use in cooling and heating systems. The
FlowCal 121 series automatic flow balancing valves are
available with integral shut-off ball valve and optional
factory-installed pressure and temperature test ports.
Drain valves are also available as an accessory for
installing in the blowdown port connection.
Product range
121 Series Automatic flow balancing valve with polymer cartridge, ball valve, with and without
Pressure and Temperature Test ports;
sizes 1/2" - 3/4" - 1" - 1 1/4"
Technical characteristics
Material:
Body:
FlowCal flow cartridge:
Spring:
Seals:
Ball:
Ball seat and stem seal:
Lever:
Pressure and temperature test port plugs:
Pressure and temperature test ports:
Drain port plug:
brass
anti-scale
polymer
stainless
steel
peroxide-cured
EPDM
brass,
chrome-plated
PTFE
zinc
coated
steel
with
vinyl
grip
brass
body
and
cap-
brass;
core-
nordel
brass
Performance:
Medium:
water, glycol solutions
Max. percentage of glycol:
50%
Max. working pressure:
400 psi (400 WOG)
Working temperature range:
32-212°F (0-100°C)
Connections:
1/2", 3/4", 1", 1-1/4" FNPT or Sweat with union x FNPT or Sweat
Pressure and temperature test ports connections:
1/4" FNPT
Blowdown port connection:
1/2" - 3/4": 1/4" FNPT
1" - 1 1/4": 1/2" FNPT
Flow rate:
27 flow rate settings ranging from 0.5 - 21 GPM
Flow accuracy:
±10%
Differential Pressure Control Ranges:
2-14, 2-32, 4-34, 5-35, 3-32, 4-35
Identification:
metal plate with ball chain stating
∆
P range and fixed flow rate
CALEFFI
FlowCal™ Automatic flow balancing valve with polymer cartridge
121 Series
NA18055
.0
2
www.caleffi.com
©
Copyright
201
8
Caleffi
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.
