TOP-FLO® ZERODL™ T-Pattern Diaphragm Valves

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If you are interested in this product, please contact us for further assistance.

Steel & O’Brien for years has specialized in manufacturing custom fabricated products designed specifically to meet our customers’ requirements. Our primary objective has always been to design and manufacture these specialty products by using state-of-the-art manufacturing practices and technologies. Steel & O’Brien and its affiliates employ engineers with a vast range of expertise and knowledge in the bioprocessing and pharmaceutical industries. The benefit of this is our ability to provide quick and accurate solutions to even the most complicated problems that occur in the field. All specialty products are manufactured using good manufacturing practices and are put through a very rigid quality control inspection before leaving our facility. These practices ensure that our customers receive quality parts ready for immediate installation. 100% BPE Compliant with full material traceability.


ZERODL T-pattern type valves improve drainability and greatly eliminate dead leg. Typically installed in a horizontal position, this valve also provides for excellent sampling or diverting of critical process fluids throughout the processing system. ZERODL T-pattern valves are available in sizes ranging from 1/4” through 6”. These valves are machined from a solid block of 316L stainless steel with T characteristics through 6”. A wide variety of end connections and surface finishes are offered to meet your specifications. Integral sample valves available upon request. 100% BPE Compliant with full material traceability.

Steel & O’Brien offers several different types of switch packages and control monitors for position feedback to PLC.

Optional integrally mounted or externally mounted solenoid valves are also available.

Options include….


  • Mechanical
  • Proximity
  • Namur

Network Type:

  • AS-i
  • DeviceNet
  • Foundation Fieldbus
  • Modbus

Manufactures available but not limited to: Westlock, StoneL, Moniteur, Burkert, A-T Controls

Note: Not all platforms are available on all valve types. Consult factory for availability depending on requirements.

Material: 316LSS
ID Finish: As specified by the customer
OD Finish: 32Ra (Standard) other finishes upon request

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