Advertisement
2
Note
All series V46 water regulating valves are
designed for use only as operating
devices. Where system closure, improper
flow or loss of pressure due to valve failure
can result in personal injury and/or loss of
property, a separate pressure relief or
safety shut off valve, as applicable must be
added by the user.
Fig. 1
Cross-Section of V46SA
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Catalogue Section 7
0.5
1
1.5
2
2.5
Pressure increase above opening point (=HPR)[bar]
Fig. 2
Flow Diagram
Mounting
Style 5 valves may be mounted in any position.
For capillary types it is recommended that the
pressure connection be made below the
mounting plane of the valve to minimize the
possibility of slow response due to oil
accumulating in the capillary.
Adjustment
The pressure at which the valve starts to open
(opening point) can be adjusted by the
adjusting screw located at the top of the spring
housing. Clockwise will lower and counter
clockwise will raise the opening point (Valve is
not factory set at a certain value).
Valve Capacity
The valve capacity is determined by three data:
1. The required max. flow.
2. The max. allowed pressure drop across the
valve (= ∆p bar).
3. The head pressure rise which is the
difference between the pressure where the
valve starts to open and the condenser
operating pressure (= HPR) .
The valve operating conditions can be
determined by use of the flow diagram or K
calculation formulae.
p = 4
p = 3
p = 2
p = 1.5
p = 1.0
p = 0.5
3
3.5
4
4.5
5
V46SA
Issue 27/02/02
v
© 1997 Johnson Controls, Inc.
Order No. PD-V46SA-E
Advertisement
