Bellows Sealed Stop Valves

BSA3 and BSA3T
  • Ultimate solution to on/ off stop valve needs.
  • Environmentally sound solution.
  • Bellows sealed design ensures stem seal leaks are totally eliminated.
  • Meets most stringent worldwide emissions legislation.
  • Vital to maintain plant safety.
  • Save energy, promote a cleaner environment.
  • Zero emissions are guaranteed.
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What do I do now?

Find further information on Bellows Sealed Stop 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

Model BSA1 BSA1 RPTFE BSA1B/D BSA1T BSA1T RPTFE
Valve Trim Conical Cone          
Standard Flat Disc        
Throttling plug and locking device        
Balancing Disc        
R-PTFE Soft Seat Standard Disc        
R-PTFE Soft Seat Shrottling Plug and Locking Device        
Stellite Seat          
Bellows Single ply      
Twin ply    
Sizes DN15 1/2"
DN20 3/4"
DN25 1"
DN32 1 1/4"
DN40 1 1/2"
DN50 2"
DN65 2 1/2"
DN80 3"
DN100 4"
DN125 5"
DN150 6"
DN200 8"
DN250 10"          
Connections Screwed          
Flanged
Socket Weld          
Face-to-Face
Technical Literature Literature for these products is available below
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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 Bellows sealed stop valves for leak free operation SB-P137-01 5 475 KB
PDF Spirax SafeBloc Double Block and Bleed Bellows Sealed Stop Valve SB-P184-10 2 366 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 A3S and A3SS Bellows Sealed Stop Valves TI-P132-09 6 163 KB
PDF BSAT and BSA Bellows Sealed Stop Valves TI-P137-18 4 945 KB
PDF SafeBloc Double Block and Bleed Bellows Sealed Stop Valve TI-P184-08 5 476 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 A3S Bellows Sealed Stop Valve IM-P132-11 3 122 KB
PDF BSA and BSAT Bellows Sealed Stop Valves IM-P137-02 8 492 KB
PDF BSA6T and BSA64T Stainless Steel Bellows Sealed Stop Valves IM-P184-03 3 274 KB
PDF SafeBloc Double Block and Bleed Bellows Sealed Stop Valve IM-P184-09 3 1.06 MB
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Steam Engineering Tutorials

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

Bellows Sealed Stop Valves

A brief look at how leaks are prevented from bellows sealed stop valves.

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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, calculate 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.

Bellows Sealed Stop 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