Samson 42-37, Mounting And Operating Instructions

Page: 37 / 84

EB 3017 EN 5-7
Installation
Table 5-1: Inlet and outlet lengths
Control line to be provided on site (see information
under ‘Control line kit’ in section 5.1)
Control line kit (see information under
‘Control line kit’ in section 5.1)
DN
min.
a x DN
min.
b x DN
a Inlet length
b Outlet length
State of process me-
dium
Valve conditions Inlet length a Outlet length b
Gas Ma ≤ 0.3 2 4
Vapors
1)
Ma ≤ 0.3 2 4
Liquid
Free of cavitation/w < 3
m /
s
2 4
Cavitation producing noise/w ≤ 3
m
/
s
2 4
1)
No saturated steam
Flow and differential pressure control with
Type 42-37:
Flow and differential pressure control with
Type 42-39:
V
.
p
_
+
_
+
V
.
p
_
+
_
+
Flow and pressure control with Type 42-39:
1)
V
.
p
_
_
+
+
Fig. 5-1: Sample applications for Type 42-37 and Type 42-39 Flow and Differential Pressure or
Pressure Regulator