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Pressure Reducing Valve DP 17

Description

The DP17 is an SG iron pilot operated pressure reducing valve suitable for steam or compressed air.

The DP17G is an SG iron pilot operated pressure reducing valve suitable for compressed air and industrial gases. Note: it is not suitable for oxygen services.

Sizes and pipe connections

  • DN15LC (not available for type DP17G), 15, 20, 25, 32, 40 and 50 Screwed BSP (BS 21 parallel) or API (DN15 to 25 only)

  • Flanges to: DN15 - 50 BS 4504 PN16 and PN25 , DN25 - 50 BS 10 Table H and ANSI 300

  • Also available are: DN15 - 50 JIS 10/16 and ANSI 150,DN15 - 20 BS 10 Table F, DN15 - ANSI 300

Pressure Reducing Valve Dp 17

Operating range

  • *PMO Maximum steam pressure recommended 17 bar g.

  • A-D-E Screwed and flanged BS 4504 PN25, ANSI 300, and BS 10 Table H.

  • A-B-C Flanged ANSI 150.

  • F - F The DP17G is limited to 120°C.

  • Three colour coded pressure adjustment springs are available for the following downstream pressure ranges:

  • Yellow 0.2 bar g to 3 bar g

    Blue 2.5 bar g to 7 bar g

    Red 6.0 bar g to 17 bar g

Pressure Reducing Valve 2 Dp 17

Materials

No Part Material
1 Adjustment screw Steel BS 3692 Gr. 8.8
2 Adjustment lock-nut Steel BS 3692 Gr. 8.8
2 Adjustment lock-nut Steel BS 3692 Gr. 8.8
3 Washer Stainless steel BS 1449 304 S 16
4 Spring housing SG iron DIN 1693 GGG 40
5 Top spring plate Brass BS 2872 CZ 122
6 Pressure adjustment Stainless steel spring BS 2056 302 S 25
7 Bottom spring plate Brass BS 2872 CZ 122
8 Spring housing securing studs and nuts Steel M10 x 50 mm BS 4439 Gr. 8.8, BS 3692 Gr. 8
9 Pilot diaphragms Phosphor bronze BS 2870 PB 102 1980
10 Pilot valve housing SG iron DIN 1693 GGG 40.3
11 Spring housing cover Stainless steel BS 1449 304 S 12 2A
12 Pilot valve and seat unit Stainless steel/PTFE BS 970 431 S 29
13 Filter element Brass (not shown) Brass
14 Internal strainer Stainless steel ASTM A240 TP 304
15 Body gasket Stainless steel reinforced exfoliated graphite
16 Main valve return spring Stainless steel BS 2056 302 S 25
17 Main valve Stainless steel BS 970 431 S 29
18 Main valve seat Stainless steel BS 970 431 S 29
19 Pressure sensing pipe Copper BS 2871 C 106 ½H
20 Main valve body SG iron DIN 1693 GGG 40.3
21 Main body securing studs and nuts Steel M10 x 25 mm BS 4439 Gr. 8.8 BS 3692 Gr. 8
22 Main diaphragm chamber SG iron DIN 1693 GGG 40.3
23 Main diaphragm securing bolts and nuts Steel M12 x 50 mm Steel M12 x 50 mm BS 3692 Gr. 8
24 Main diaphragms Phosphor bronze BS 2870 PB 102 1980
25 Main diaphragm plate Brass BS 2872 CZ 122
26 Push rod Stainless steel BS 970 431 S 29
27 Pipe assembly Brass and copper
28 Plug 1 /8" BSP Steel
29 Pressure pipe union Brass
30 Lock-nut Steel BS 3692 Gr. 8
*Stainless steel/nitrile with version DP17G.

How to order

Example: 1 off DN32 Spirax Sarco DP17 pressure reducing valve flanged BS 4504 PN25.

Installation

The valve should be installed in a horizontal pipeline with the direction of flow as indicated by the arrow on the valve body. Full Installation and Maintenance Instructions are supplied with the product.

Pressure Reducing Valve 3 Dp 17
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