Pressure Reducing & Surplussing Valves

Well designed steam systems produce clean dry steam for delivery at high pressure - the best quality steam at the lowest cost.

Lower pressure steam is usually needed at the point of use. Effective control demands an automatic valve that can reduce steam pressure accurately, reliably and at a cost to suit the application.

Types;

  • Self-acting valves (can operate without the need of external power).
  • Pneumatic signal and actuator operated valves.
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What do I do now?

Find further information on Pressure Reducing & Surplussing Valves in the sections below, or get in touch for further assistance.

Contact us for advice from our engineers

  • Help on sizing and selection
  • Arrange a visit
  • Answers & advice on products/applications
  • Obtaining quotes & placing orders
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Range Table

Valve type Pilot operated Direct acting Compact direct acting Pneumatically
actuated
DP DRV BRV2 BRV7 SRV2 LRV2 SPIRA-TROL
Steam Applications  
Gas Applications  
Liquid Applications        
Minimal Pipeline Space    
Minor Branch Lines  
Major Branch Lines        
Steam Distribution        
Accurate Control Options          
Variety of Control Options          
High Capacity          
Poor Media Conditions      
Technical literature Literature for these products is available below See Control Valves
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Sales Brochures

Our brochures typically contain the concept, customer benefits and key features of the product.

Title Reference Number Issue File Size
PDF Pressure reducing and surplussing valves for steam and industrial fluids SB-GCH-29 3 2.99 MB
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Technical Information

Use our technical information sheets for a full technical specification of the product. They typically include:

  • Pressure/temperature limits
  • Materials
  • Sizes & connections
  • Dimensions & weights
  • Capacity charts
  • Ordering information
Title Reference Number Issue File Size
PDF BRV2, BRV2S5 and SRV2 Pressure Reducing Valve Capacities TI-P045-13 3 81 KB
PDF BRV2S and BRV2B SG Iron Pressure Reducing Valves TI-P045-14 5 211 KB
PDF BRV2S5 and BRV2B5 Gunmetal Pressure Reducing Valves TI-P045-09 6 196 KB
PDF BRV71 and BRV73 SG Iron Pressure Reducing Valves TI-P210-01 4 275 KB
PDF DEP4 Cast Steel Excess Pressure Valve TI-P206-01 11 972 KB
PDF DEP7 SG Iron Excess Pressure Valve TI-P205-01 9 834 KB
PDF DEP7 SG Iron Excess Pressure Valve Materials of Construction TI-P205-02 2 104 KB
PDF DLV7 SG Iron Pressure Reducing Valve TI-P204-04 5 758 KB
PDF DP143, DP143G and DP143H Pilot Operated Pressure Reducing Valves with Cast Steel Bodies TI-P006-01 11 325 KB
PDF DP163, DP163G and DP163Y Pilot Operated Pressure Reducing Valves with Stainless Steel Bodies TI-P107-01 10 346 KB
PDF DP27, DP27E, DP27G, DP27GY, DP27R and DP27Y Pilot Operated Pressure Reducing Valves with SG Iron Bodies TI-P470-01 7 1.19 MB
PDF DP27T and DP27TE Pilot Operated Pressure/Temperature Control Valves with SG Iron Bodies TI-P470-08 2 3.36 MB
PDF DPP17E and DPP17EE Pilot Operated Pressure Reducing Valves with SG Iron Bodies TI-P208-01 3 161 KB
PDF DPS17 Combined Pressure Reducing and Surplussing Valve TI-P100-14 2 157 KB
PDF DPT17T and DPT17TE Pilot Operated Pressure/Temperature Control Valves with SG Iron Bodies TI-P101-01 4 285 KB
PDF DRV4 and DRV4G Cast Steel Pressure Reducing Valves TI-P203-01 15 626 KB
PDF DRV7 and DRV7G SG Iron Pressure Reducing Valves TI-P204-01 13 577 KB
PDF LRV2 Pressure Reducing Valve Capacities TI-P001-09 2 42 KB
PDF LRV2B and LRV2S Gunmetal Pressure Reducing Valves TI-P001-07 4 123 KB
PDF SDP143 Pilot Operated Pressure Surplussing Valve with Cast Steel Body TI-P004-01 6 407 KB
PDF SRV2S Stainless Steel Pressure Reducing Valve TI-P186-05 7 191 KB
PDF SRV461S and SRV463S Stainless Steel Direct Acting Pressure Reducing Valves TI-P186-01 9 381 KB
PDF SRV66 Sanitary Pressure Reducing Valve TI-P186-08 9 274 KB
PDF WS4 Water Seal Pot TI-S12-03 5 117 KB
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Installation & Maintenance Instructions

Clear & accurate guidelines on installation & maintenance. They typically include:

  • General safety information
  • General product information
  • Installation
  • Commissioning
  • Operation
  • Maintenance
  • Spare parts
Title Reference Number Issue File Size
PDF Balance Pipe Assembly for the DP Type Valve IM-S10-21 2 86 KB
PDF Body Gasket and Studs and Nuts Set for DP Pilot Operated Pressure Reducing Valves IM-S10-28 2 148 KB
PDF Bolts and Nuts Set for Diaphragm Chamber Securing on the DP Type Valve IM-S10-27 2 85 KB
PDF BRV2 Range of Pressure Reducing Valves IM-P045-10 9 449 KB
PDF BRV2 SP and BRV2 BP Products supplied with external pressure sensing connection for units screwed ½", ¾" & 1" BSP (BS21 Rp) or flanged BS 4504 PN25. IM-P045-08 2 37 KB
PDF BRV71 and BRV73 Pressure Reducing Valves IM-P210-04 4 359 KB
PDF Control Pipe Assembly for the DP Type Valve IM-S10-20 2 42 KB
PDF DEP Excess Pressure Valve IM-S12-10 11 1.67 MB
PDF DLV7 SG Iron Pressure Reducing Valve IM-P204-03 3 1.23 MB
PDF DP Pilot Operated Pressure Reducing Valves IM-S10-25 3 198 KB
PDF DP143 and DP163 Pressure Reducing Valve Spares IM-P006-08 2 89 KB
PDF DP143, DP143G, DP143H and DP163, DP163G, DP163Y Pilot Operated Pressure Reducing Valves IM-P006-07 10 905 KB
PDF DP17 to DP27 Pilot Valve Assembly Upgrade Kit Fitting Instructions IM-P100-16 3 184 KB
PDF DP17, DP143 and DP163 Pressure Reducing Valves Supplementary Safety Information IM-S10-30 1 28 KB
PDF DP17, DP17E, DP17G, DP17R, DP17Y and DP27G Pilot Operated Pressure Reducing Valves IM-P100-05 16 1.07 MB
PDF DP17T and DP17TE Pilot Operated Pressure/Temperature Control Valves IM-P101-04 7 1.45 MB
PDF DP27, DP27E, DP27R and DP27Y Pilot Operated Pressure Reducing Valves IM-P470-03 5 1.95 MB
PDF DP27T and DP27TE Pilot Operated Pressure/Temperature Control Valves IM-P470-09 3 5.71 MB
PDF DPP17E and DPP17EE Pressure Reducing Valves IM-P208-02 1 64 KB
PDF DPS17 Combined Pressure Reducing Valve and Surplussing Valve IM-P100-13 1 68 KB
PDF DRV and DRVG Pressure Reducing Valves IM-S12-04 12 1.63 MB
PDF DRV, DRVG and DEP Pressure Controls Supplementary Safety Information IM-S12-13 1 42 KB
PDF HP10 Pressure Reducing Valve IM-P210-02 4 367 KB
PDF Internal Strainer for the DP17, DP27 and 37D Pilot Operated Pressure Reducing Valves IM-S10-26 2 557 KB
PDF Main Diaphragm Set for the DP Type Valve IM-S10-22 2 56 KB
PDF Pilot Valve Assembly and Pilot Filter for DP27 Pilot Operated Pressure Reducing Valves IM-P470-06 1 162 KB
PDF Pilot Valve Diaphragm Set for the DP17 and DP27 plus Pilot Valve Chamber Assembly for the DP17 IM-S10-24 4 592 KB
PDF Pressure Control Spring for the DP and SDP Pilot Operated Pressure Reducing Valves IM-S10-23 3 510 KB
PDF SDP143 Pilot Operated Pressure Surplussing Valve IM-P004-05 5 643 KB
PDF SRV2S Pressure Reducing Valve IM-P186-03 4 335 KB
PDF SRV461S and SRV463S Stainless Steel Direct Acting Pressure Reducing Valves IM-P186-02 5 287 KB
PDF SRV66 Sanitary Pressure Reducing Valve IM-P186-09 4 254 KB
PDF Type LRV2 Pressure Reducing Valve for Liquids IM-P001-08 3 97 KB
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Steam Engineering Tutorials

Tutorials explaining the principles of steam and heat transfer, specific to this product section.

Pressure Reduction

Various types of pressure controls are examined, including direct acting bellows operated and diaphragm operated valves, and pilot operated valves, with guidelines on how to select and install them correctly.

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Calculators

The appropriate calculator to help designers and engineers select and size the products they need.

Control Valves

Suitable for steam and water, determine valve Kv, flowrate, or pressure drop using this calculator.

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CAD Drawings

CAD drawings enabling you to see exactly how the product is constructed. You can also drop these into your own schematics.

Pilot Operated Valves - CAD Drawings

Direct-acting Valves - CAD Drawings

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Contact us for advice from our engineers

  • Help on sizing and selection
  • Arrange a visit
  • Answers & advice on products/applications
  • Obtaining quotes & placing orders