Level Controls

A level control system consists of a sensor, controller, valve or pump and may be on-off or modulating. It is vital that your boiler water levels be monitored safely and accurately.

  • Products compliant with all relevant European standards & regulations
  • Safe working environment for your employees
  • Reduce the risk of accident in the boiler house
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Not all products are available in all markets.  Please choose your National Spirax Sarco Website or Contact Us for further information.

What do I do now?

Find further information on Level Controls 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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Sales Brochures

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

Title Reference Number Issue File Size
PDF DCV 2/B Boiler feed check valves SB-P402-04 4 101 KB
PDF PA420 Preamplifier SB-P402-140 1 386 KB
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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 APS1 Probe Simulator TI-P402-68 2 57 KB
PDF C2 Probe Chamber TI-P402-41 4 450 KB
PDF DCV3/B Boiler Feed Check Valve TI-P402-121 5 174 KB
PDF Electrical Enclosures - General Purpose - Plastic TI-P402-29 7 151 KB
PDF LC1350 Level Controller TI-P402-132 3 244 KB
PDF LC2250 Level Controller TI-P402-133 3 243 KB
PDF LC2650 Level Controller TI-P402-134 4 278 KB
PDF LC3050 Level Controller TI-P402-135 4 194 KB
PDF LP10-4 Level Probe TI-P402-91 13 164 KB
PDF LP20 Capacitance Level Probe TI-P402-39 8 475 KB
PDF LP30 High Integrity, Self-monitoring Low Level Alarm Probe TI-P402-43 10 143 KB
PDF LP31 High Integrity, Self-monitoring, High Water Level Alarm Probe TI-P402-81 6 145 KB
PDF PA20 Preamplifier TI-P402-66 4 533 KB
PDF PA420 Preamplifier TI-P402-138 2 144 KB
PDF Probe Clearance Test Instructions for use of Checking Wires TI-P402-75 2 71 KB
PDF Probe Flanges for External Level Control Chambers TI-P402-07 5 609 KB
PDF Probe Flanges for Protection Tubes TI-P402-06 3 59 KB
PDF Remote Alarm and Shutdown Panels for Boilers TI-S75-06 3 159 KB
PDF Selection of Modulating Feedwater Valves Electrically Actuated TI-S75-11 2 70 KB
PDF Selection of Modulating Feedwater Valves Pneumatically Actuated TI-S75-12 3 116 KB
PDF SPV1 and SPV3 Sequencing Purge Valves TI-P402-42 4 227 KB
PDF WV1 Water Valve - Pilot Operated TI-P402-03 6 104 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 APS1 Probe Simulator IM-P402-69 1 25 KB
PDF DCV3/B Boiler Feed Check Valve IM-P402-35 5 229 KB
PDF LC1350 Level Controller IM-P402-129 5 670 KB
PDF LC2250 Level Controller IM-P402-130 7 705 KB
PDF LC2650 Level Controller IM-P402-128 5 999 KB
PDF LC3050 Level Controller IM-P402-131 5 1.26 MB
PDF Level Control Systems Supplementary Safety Information IM-P402-115 3 29 KB
PDF Level Probe LP10-3 IM-P402-49 1 72 KB
PDF LP10-4 Level Probe IM-P402-92 12 221 KB
PDF LP20 Capacitance Level Probe IM-P402-37 9 586 KB
PDF LP30 High Integrity, Self-monitoring Low Level Alarm Probe IM-P402-44 13 211 KB
PDF LP31 Level Probe IM-P402-80 8 234 KB
PDF PA20 Preamplifier IM-P402-67 12 215 KB
PDF PA420 4-20 mA Loop Powered Level Preamplifier IM-P402-139 1 948 KB
PDF Remote Alarm and Shutdown Panel IM-P402-52 4 72 KB
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Steam Engineering Tutorials

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

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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.

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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