Control valves
Pressure reducing/surplussing valves
4.6.101
Screwed
1⁄2"LC
1⁄2"
3⁄4"
1"
15LC
15
20
25
32
40
a
a
a
b
f
f
a
b
c
d
a
a
a
b
a
a
a
b
b
c
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
b
c
d
a
b
c
d
e
f
a
a
a
b
f
f
a
b
c
d
a
a
a
b
a
a
a
b
b
c
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
b
f
f
a
b
d
e
a
a
a
b
f
f
a
b
c
d
a
a
a
a
a
a
a
a
a
b
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
b
a
a
a
a
a
a
a
a
a
b
a
a
a
a
a
a
a
a
a
b
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
Spare parts - Available spares
Maintenance kit: A stand-by set of spares for general maintenance purposes and covers all spares marked *
* Main diaphragm
* Pilot diaphragms
* Pilot valve assembly
Pilot valve filter and gasket
Pilot valve assembly for temperature control unit
* Pilot valve packless gland set
Main valve assembly
Pushrod and main diaphragm plate assembly
* Internal strainer
* Main valve return spring
Pressure adjustment spring
Control head (3 pieces)
A
B
C, C1
E, F
B2, C2, D2, E2
H2, J2
K, L
G
M
N
0.2-17bar
O
Y, Z
(2 off)
(2 off)
(packet of 3 of each)
DN15 to DN50
When ordering state range and length of capillary tube. Normally stocked in capillary lengths of 2 m.
Available in multiples of 2 m up to a maximum of 14 m (at extra cost).
RangeA 16°C−49°C RangeB 28°C−71°C RangeC 49°C−82°C RangeD 71°C−104°C RangeE 93°C−127°C
U
P
Q
R
R1
S
T
DN15 to DN32 (set of 10)
V
DN40 to DN50 (set of 12)
S1
Y
W
X1
X2
Always order spares by using the description given in the column headed 'Available spares' and state the size and type of the pilot
operated pressure / temperature control valve.
Example: 1 - Main valve assembly for a Spirax Sarco DN15 Type DP27T pilot operated pressure/temperature control valve.
How to fit: See the Installation and Maintenance Instructions supplied with the product. Further copies are available on request.
Interchangeability of spares
The following table shows how in certain sizes some parts are interchangeable. For example in the line headed 'Main diaphragm' the
diaphragm used in the screwed valves 1⁄2" and 3⁄4" is common to these sizes by the letter 'a', the letter 'c' indicates that one diaphragm is
common to the DN40 and DN50 valves. Spares which are marked † are interchangeable with the DP17 and DP27 pressure reducing
valves. Spares marked 'o' are interchangeable with the 37D temperature control valve.
Union sub assembly (3 pieces)
* Control pipe assembly
Balance pipe assembly
* Body gasket set
* Pilot valve block gasket temperature control unit (3 pieces)
Set of spring housing/actuating chamber cover securing studs and nuts
Set of main body studs and nuts
Set of diaphragm securing bolts and nuts
Set of temperature pilot valve housing securing studs and nuts
Set of adjustment head securing screws
Solenoid valve complete
Type DP27TE only
Replacement coil
Valve seat and core assembly
How to order spares
(3 off)
(set of 4)
(set of 4)
Valve sizes:
(set of 4)
(set of 3)
Size DN
Maintenance kit
Main diaphragm
Flanged
50
e
c
a
a
a
a
a
g
e
c
a
a
a
f
e
b
a
b
b
b
a
a
† o
† Pilot diaphragm
† Pilot valve assembly for pressure control unit
Pilot valve filter and gasket
o Pilot valve assembly for temperature control unit
o Pilot valve packless gland set
† o
† o
† o
Main valve assembly
Internal strainer
Main valve return spring
† Pressure adjustment spring
o Control head
o 'O' ring for sensor bulb adaptor
Control pipe assembly
† Balance pipe assembly
† Gasket set
Pilot valve block gasket
† Set of spring housing securing studs and nuts
† o
† o
Set of main body studs and nuts
Set of diaphragm securing bolts and nuts
Set of temperature pilot valve housing
securing studs and nuts
o Set of adjustment head securing screws
Page 8 of 9
TI-P470-08 CH Issue 3
DP27T and DP27TE Pilot Operated Pressure/Temperature Control Valves with SG Iron Bodies
