Expansion Tanks, Air Separators, Suction Diffusers & Combination Valves
Series PSD Suction Diffusers
Available in sizes 2” - 12” For general purpose applications in chilled, condenser, heating and cooling tower systems.
PSD Features & Benefits
Combined Functions – One fitting replaces a 90° ell, strainer, flow stabilizer and reducer, simplifying installation and reducing installation cost.
Space Savings – Use a PACO PSD suction diffuser whenever floor space does not permit recommended 10 pipe diameters of straight suction piping. Diffuser incorporates flow-straightening guide vanes to promote smooth, even flow profile as fluid enters pump suction thereby maximizing pump life.
Strainer – Diffuser incorporates a permanent, perforated stainless steel strainer and a disposable stainless steel, fine-mesh start-up screen for capture and removal of foreign particulates in system piping. Clean fluid, free of suspended solids helps protect pump and other system components.
Ease of Installation -- Cast iron body and cover with 125# ANSI flanges are suitable for direct mounting to suction of pump.
Series CSB Combination Valves
Available in sizes 2” - 14” For general purpose applications in chilled, condenser, heating, and cooling tower systems.
CSB Features & Benefits
Flanged, Cast Iron Combination Valve – Three functions combined into one valve assembly with standard 125# ANSI flanges, promotes simplified installation and minimizes costs.
Spring-loaded Disc – Bronze disc with Stainless Steel spring loading promotes chatter-free, corrosion-resistant operation and allows for valve to installed in horizontal or vertical orientations.
Durable Non-Slam Seat – O-ring seat seal provides long-lasting, wear-resistant seat while maintaining soft and positive closure.
Position Indicator with Memory – Indicator scale and memory marker allows for quick visual inspection of valve position and precise return of original positioning after closure and re-opening, to preserve accurate balance.
“Y” Pattern Valve – design saves space, promotes ease in adjustment and yields low pressure drop. CSB Valve is designed for quiet and efficient system operation.

