Description

The DP27T and DP27TE are combined pressure / temperature

control valves for use on steam applications. They are

designed to be used in conjunction with a 2 m length of

capillary which is available separately (other lengths are

available on request - see 'Optional extras', page 4). They

combine a temperature and pressure pilot valve in one unit.

This controls the main valve so that the temperature is

maintained while the maximum steam pressure is limited.

A variable rate conical pressure adjustment spring is fitted

providing a downstream pressure range of 0.2 - 17 bar g.

Notes:

1. The valve can be supplied with a blank undrilled flange

if required.

2. The sensor of the control system will need to be mounted

by either a union kit, pocket or wall mounting bracket - see

'Optional extras, page 4'

DP27T shown

Available types of valve

DP27T Pressure / temperature control

Pressure / temperature control

DT27TE with electrically operated

solenoid valve

Optional

extras

See page 4.

Voltages

available

Frequency

Inrush

consumption Holding

50/60 Hz

45 VA

23 VA

Temperature ranges

Range A 16 °C to 49 °C Range B 38 °C to 71 °C

Control valves

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice.

Pressure reducing/surplussing valves

© Copyright 2016

TI-P470-08

CH Issue 3

DP27T and DP27TE

Pilot Operated Pressure /

Temperature Control Valves with SG Iron Bodies

Range C 49 °C to 82 °C

DN15LC - Low Capacity version, DN15, DN20, DN25, DN32, DN40 and DN50 screwed BSP (BS 21 parallel) or NPT (DN15 to DN25 only).

Sizes and pipe connections

Standard flanges:

DN15 - DN50 EN 1092 PN25

Available on request: DN15 - DN50 JIS 10, JIS 16 and ANSI 150

Pressure / temperature limits

DN25 - DN50 BS 10 Table H and ANSI 300

DN15 - DN20 BS 10 Table F

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A

D

B

G

Body design conditions

A-D-E

A-B-C

G-G

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Pressure bar g

The product must not be used in this region.

Screwed and flanged EN 1092 PN25, ANSI 300, and

BS 10 Table H.

Flanged ANSI 150.

The DP27TE is limited to 10 bar g @ 190 °C.

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Maximum upstream pressure

for saturated steam service

DP27T

DP27TE

DP27T

DP27TE

Steam

saturation

curve

G

C

E

Maximum design temperature

Power

Range D 71 °C to 104 °C Range E 93 °C to 127 °C

DN15 ANSI 300

PN25

25 bar g @ 120 °C

17.2 bar g @ 40 °C

232 °C @ 21 bar g

-10 °C

17 bar g

10 bar g

232 °C @ 17 bar g

190 °C @ 10 bar g

0 °C

Note: For lower operating temperatures consult Spirax Sarco

Maximum differential pressure

DP27T

17 bar

DP27TE

10 bar

Designed for a maximum cold hydraulic test pressure of 38 bar g

Note: With internals fitted, test pressure must not exceed 25 bar g

Maximum design pressure

A-D-E

A-B-C

Minimum design temperature

Maximum operating temperature

Minimum operating temperature

Technical data

(Solenoid valve)

230 ±10% Vac or 115

±10% Vac

(others available on

request).

Page 1 of 9

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