Specialists in Valves, Automation and Controls, Process Piping, Steam and Piping Specialties
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As the premier distributor of industrial valves, valve automation services and related piping and steam specialties in our region, we attribute our success to quality products, knowledgeable people, and service second to none. Erdmann has a wide variety of high-quality, high-tech products to meet your requirements. We back these products with knowledgeable, experienced, service-oriented people and we will provide timely and accurate responses to your needs.
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Diaphragm Valves


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Weir-Valves

Diaphragm Weir Valves


Features & Benefits:

Bonnet Isolation
  • The diaphragm isolates the working parts of the valve from process fluids.

    Streamlined Fluid Passage
  • The smooth contoured body has minimal pockets, cavities or dead spaces, which prevent accumulation or stagnation of process fluids or contaminants.

    No Packing Gland or Packing
  • No more packing gland adjustment required or stem packing leakage problems for improved control of fugitive emissions.

    Positive Leak Tight Closure
  • Bubble tight closure is provided in accordance with MSS SP–88.

    In-Line Maintenance
  • Easily maintained when required for reduced downtime and lower cost of ownership.

    Line-Lok
  • Unique ...
Saunders Industrial Diapragm Valves

Saunders Industrial Diaphragm Valves


  • Weir straight-through and high-flow available.
  • Size range: 1/4"to 14".
  • Pressure range: Vacuum to 230 psi.
  • Body materials: Cast iron, ductile iron, bronze, cast steel, stainless steel, alloy 20, PVC, and CPVC.
  • Lining: Soft rubber, hard rubber, Neoprene, Butyl®, Hypalon®, Polypropylene®, Tefzel®, PVDF, PFA, glass and halar.