Brochure

Areas of use
within different areas in heating and cooling systems.
Description
PVM is a dynamic valve unit developed to regulate
pressure drop. A fully open STV mounted on the
intake, and a PV differential pressure valve on the
return. The pressure-compensating mains control
valve ensures problem-free setting of the various
mains. The PVM valve is equipped with a signal-
ling circuit, cut-off valve, drain valve and measure-
ment socket as standard.
The PVM valve guarantees 100% differential pres-
sure regulation under all conditions, regardless of
whether changes are made in the system.
The valve regulates the system and removes noise
problems due to high pressure drop. After setting
the valve no further adjustment to the valves is
necessary.
Technical data
Max. temperature
248°F
Min. temperature
14°F
Material
Brass CW617N
Gaskets EPDM
1/2” 3/4” 1” 1 1/4” 1 1/2” 2”
Flow range - gpm
0.22 0.44 2.65 3.08 4.4 22
2.65 4.4 11 18.5 22 66
Presetting on delivery
1/2”, 3/4”
5 turns
1”
8 turns
1 1/4”, 1 1/2” , 2”
2 turns
Max. pressure psi
58 psi
Min. pressure psi
0.73-4.35 psi 1/2”-1”, 2.9-11.6 psi 1 1/4”-2”
Pressure class
PN16
Balancing valve PVM
Dimensions (inches)
Dim A B C D E F Weight (lbs)
PVM 1/2” 6.57 5.83 3.78 3.39 4.37 3.74 5.811
PVM 3/4” 6.81 5.94 3.86 3.54 4.49 3.74 4.389
PVM 1” 7.95 6.1 4.02 4.02 4.72 3.78 5.884
PVM 1 1/4” 9.25 7.4 4.52 4.72 5 3.78 10.020
PVM 1 1/2” 10.12 8.11 4.69 5.2 5.47 4.25 13.348
PVM 2” 11.26 6.22 4.96 6.06 5.83 4.37 18.992
A
B
C
D
F
C 5044
DN 25
PN 20
E
Macon Balancing PVM is used to distribute the flow
Tunstall Corporation
118 Exchange Street Chicopee, MA 01013
Phone: [phone] Fax: [phone]
www.tunstall-inc.com
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R
March 2014