SPX FLOW W70 Series User Manual

Installation Waukesha Cherry-Burrell
®
Brand W70 Series Mix Proof Valves
Page 16 95-03087 10/2023
Installation
Installation of a steam flush system on a W70 Series Mix Proof
valve should be done only by a licensed Steam Fitter.
The valve must be installed vertically to drain out any steam/
condensate and have a drain funnel placed directly below it.
Refer to Figure 9 to see the shut-off valves in the supply lines.
Function
The low pressure steam enters through port B of the upper stem
steam flush adapter. Steam purges the outside and inside of the
upper stem and the vent cavity. Steam exits out the leakage port
F.
For steam flushing the outside of the lower stem (balancer), the
low pressure steam enters port D and exits at port E.
WARNING
The W70 Series Mix Proof Valve
equipped with the steam flush option
for stem and vent cavity is designed
only for low-pressure, product-com-
patible saturated steam with a maxi-
mum pressure of 10 psig (0.65 bar) =
240
°F (115°C) temperature.
DANGER
The steam connection must be shut off
and the valve must cool before
servicing the valve.
Table 2: Key for Figure 9
A. Saturated Steam (wet steam)
Max 10 psig
B. Steam IN (Upper Stem Adapter)
C. Product
D. Steam IN (Lower Stem Adapter)
E. Steam out of Lower Stem Adapter
F. Steam out from vent cavity (leakage
port)
Figure 9 - Steam Flush Option for Stem and Vent Cavity
Schematic
B
D
C
C
F
VA100-314
E
A

SPX FLOW W70 Series Specifications

General

Brand	SPX FLOW
Model	W70 Series
Category	Control Unit
Language	English