Control systems Pressure reducing/surplussing valves
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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. © Copyright 2021
TI-P205-01 CTLS Issue 12
DEP7 SG Iron Excess Pressure Valve
Description The DEP7 is an SG iron direct acting bellows sealed excess pressure valve. The standard version has an EPDM diaphragm limited to 125 °C and is suitable for steam and water applications. Also available for oil applications is a Nitrile rubber diaphragm (suffix ' N ' i.e. DEP7B1N which is limited to 90 °C) . Note: To protect the actuator diaphragm on steam applications a WS4 water seal pot must be installed in the upstream pressure signal line to the actuator. Refer to TI-S12-03 for further details. Standards The products listed below comply with the requirements of the EU Pressure Equipment Directive/UK Pressure Equipment (Safety) Regulations and carry the mark when so required. Certification This product is available with a manufacturers' Typical Test Report. Note: All certification/inspection requirements must be stated at the time of order placement.
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Available types: DN15 to DN100 flanged connections. The DEP7 is also available in a choice of 6 pressure ranges (suffix 1 - 6 ):
Flanged DN15 to DN100
Upstream pressure ranges:
Pressure range (bar)
Range
Valve type Actuator type Spring colour
PN Rating
DN15 - DN40 DN50 - DN80
DN100
1 2 3 4 5 6
DEP7B1 DEP7B2 DEP7B3 DEP7B4 DEP7B5 DEP7B6
11 or 11N
Yellow
0.1 - 0.5
0.1 - 0.3
0.1 - 0.3
2.5
12 or 12N 13 or 13N 14 or 14N 15 or 15N 15 or 15N
Yellow
0.2 - 0.8
0.2 - 0.5
0.2 - 0.5
2.5
Blue
0.5 - 1.7
0.4 - 1.3
0.4 - 1.0
6
Blue
1.4 - 3.4
1.0 - 2.6
0.8 - 2.5
16
Blue
3.2 - 7.5
2.3 - 5.5
2.3 - 5.0
25
Red
7.0 - 16.0
5.0 - 15.0
4.0 - 10.0
25
Sizes and pipe connections DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100 Standard flanges: EN 1092 PN16 or PN25 Flanges available on request: ASME 150 and JIS
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