Smartflow Stainless Steel Manifolds are made to last. Superior hand-welded construction and high quality stainless steel components create a reliable product on which industry depends in demanding applications. Industries served include: Military, Aerospace, Semiconductor, Plastics Injection Molding, Extrusion, Luxury Yachts and more.

Smartflow Stainless Steel Manifolds are available in standard and custom sizes. If we don’t stock what you need, contact us with your concept, sketch or fully detailed drawing.

Assembly services are also available. We add your specified valves, fittings, temperature or pressure gauges as needed. All manifolds are 100% leak tested to 250psi.


Stainless steel manifold

Conventional Stainless Steel Manifolds

Conventional Stainless Steel Manifolds have a more robust construction with half-couplings welded to the tubing to form each port. These are recommended for manifolds that experience multiple changes to fittings or couplings. Other port and inlet sizes are available on a custom basis. Please call or email for information.

  • Inlet Sizes: 3/4″, 1″, 1-1/4″, 1-1/2″, 2″ NPT or BSP
  • Port Sizes: 1/8″, 1/4″, 3/8″, 1/2″, 3/4″ NPT or BSP


Low-Profile Stainless Steel Manifolds

Stainless steel manifold
Low-Profile Stainless Steel Manifolds are a more economical option. NPT ports are formed into the tubing. British threads are not available in the low profile manifold. This option is recommended where ball valves or fittings will be permanently installed into the ports without future change.

  • Inlet Sizes: 1″, 1-1/2″ NPT or BSP
  • Port Sizes: 1/4″, 3/8″, 1/2″ NPT only, internal manifold ports

Features and Benefits of Stainless Steel Manifolds

  • 250°F/121°C Operating Temperature Rating for application flexibility
  • Rated for 250 psi maximum liquid pressure to suit most installations
  • Chemically compatibile stainless steel construction
  • Corrosion resistant
  • 100% Leak tested
  • Brass end plug included (NPT only)
  • Integral mounting brackets for stability
  • Many sizes stocked for quick delivery
  • Custom designs available
  • Optional ball valves, flowmeters and regulators can be installed to suit specific applications.