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Not only are Wilden pumps the most cost-effective, reliable and energy-efficient solutions available, but our state-of-the-art air distribution systems (ADS) significantly increase positive displacement pump productivity by reducing air consumption and maintenance for the most energy-efficient AODD pump operation possible.

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Wilden® positive displacement air-operated double-diaphragm (AODD) pump solutions are leading the way in a host of industries and applications.

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PS4-SS-Saniflo-Hygienic

38 mm (1-1/2") Saniflo™ Hygienic™ Series Clamped Metal PumpPS4

AIR INLET
  • 3/4" FNPT
LIQUID INLET
  • 38 mm (1-1/2")
LIQUID DISCHARGE
  • 38 mm (1-1/2")
CONNECTION TYPE
  • Tri-Clamp®
  • DIN
  • SMS
VALVE OPTIONS
  • Ball
  • Mushroom
MAX SUCTION LIFT CAPABILITY
  • Full-Stroke Integral Piston – 4.8 m (15.9') Dry, 9.0 m (29.5') Wet
  • Integral Piston PTFE – 3.3 m (10.8') Dry, 9.0 m (29.5') Wet
  • EZ-Install TPE – 4.7 m (15.5') Dry, 9.0 m (29.5') Wet
  • Full-Stroke PTFE – 5.4 m (17.6') Dry, 9.0 m (29.5') Wet
  • Rubber – 5.3 m (17.3') Dry, 9.0 m (29.5') Wet
MAX FLOW RATE
  • Full-Stroke Integral Piston – 348 lpm (92 gpm)
  • Integral Piston PTFE – 295 lpm (78 gpm)
  • EZ-Install TPE – 348 lpm (92 gpm)
  • Full-Stroke PTFE – 357 lpm (94 gpm)
  • Rubber – 357 lpm (94 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • Ball – 13 mm (1/2")
  • Mushroom – 6.4 mm (1/4")
DISPLACEMENT PER STROKE *
  • Full-Stroke Integral Piston – 1.0 L (0.26 gal)
  • Integral Piston PTFE – 0.5 L (0.13 gal)
  • EZ-Install TPE – 1.0 L (0.26 gal)
  • Full-Stroke PTFE – 0.9 L (0.25 gal)
  • Rubber –1.0 L (0.27 gal)
  • * 1 cycle = 2 strokes
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  • EC-1935-LOGO
  • usp-logo
  • 3a_logo
  • fda_logo
  • ce_logo
  • atex_logo

Features and Benefits

Saniflo™ Hygienic™ Series (HS) pumps are uniquely designed for high-cleanliness requirements and feature a free-draining flow path that enables clean-in-place (CIP) capability. The HS flow-through liquid-path design also eliminates any potential areas where product residue can be trapped and contaminate the product. They are perfect for low-acid, pasteurized and protein-based products all the way up to biopharmaceutical sterile processes. HS pumps also meet the highest standards and requirements in the industry, including 3A, ATEX, EC 1935/2004, USP Class VI* and FDA CFR 21.177.

*USP Class VI certification is available only for Saniflo HS pumps with PTFE elastomer options
  • Featuring energy efficient Pro-Flo® SHIFT ADS
  • Free-draining flow path for CIP capability
  • Easy assembly with self-centering ball cages
  • Permanent or rotatable stand for cleaning
  • Multiple valve options: ball, mushroom, or flap for different application requirements
  • Shear sensitive
  • Greater flow - more gallons pumped per SCFM

Performance and Specifications

Dimensions

Dim-PS4-38mm1.5-PFSSHS-MP

Note: Dimensions vary by material and connection. For additional information, please refer to the Hygienic PS4 Metal Manual.

Flow Curves – Full-Stroke Integral Piston Diaphragm-Fitted

Flo-PS4-38mm1.5-PFSSHS-MP

Note: Additional performance curves can be found in the Hygienic PS4 Metal Manual.

AIR INLET
  • 3/4" FNPT
LIQUID INLET
  • 38 mm (1-1/2")
LIQUID DISCHARGE
  • 38 mm (1-1/2")
CONNECTION TYPE
  • Tri-Clamp®
  • DIN
  • SMS
MAX FLOW RATE
  • Full-Stroke Integral Piston – 348 lpm (92 gpm)
  • Integral Piston PTFE – 295 lpm (78 gpm)
  • EZ-Install TPE – 348 lpm (92 gpm)
  • Full-Stroke PTFE – 357 lpm (94 gpm)
  • Rubber – 357 lpm (94 gpm)
VALVE OPTIONS
  • Ball
  • Mushroom
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • Ball – 13 mm (1/2")
  • Mushroom – 6.4 mm (1/4")
MAX SUCTION LIFT CAPABILITY
  • Full-Stroke Integral Piston – 4.8 m (15.9') Dry, 9.0 m (29.5') Wet
  • Integral Piston PTFE – 3.3 m (10.8') Dry, 9.0 m (29.5') Wet
  • EZ-Install TPE – 4.7 m (15.5') Dry, 9.0 m (29.5') Wet
  • Full-Stroke PTFE – 5.4 m (17.6') Dry, 9.0 m (29.5') Wet
  • Rubber – 5.3 m (17.3') Dry, 9.0 m (29.5') Wet
DISPLACEMENT PER STROKE *
  • Full-Stroke Integral Piston – 1.0 L (0.26 gal)
  • Integral Piston PTFE – 0.5 L (0.13 gal)
  • EZ-Install TPE – 1.0 L (0.26 gal)
  • Full-Stroke PTFE – 0.9 L (0.25 gal)
  • Rubber –1.0 L (0.27 gal)
  • * 1 cycle = 2 strokes

Wetted Housings 

Material Ship Weight
316L Stainless Steel 51 kg (112 lb)

Non-Wetted Housings

Description Material
Center Section 316 Stainless Steel, Nickel-Plated Aluminum
Air Valve 316 Stainless Steel, Nickel-Plated Aluminum
Air Chamber 316 Stainless Steel, Nickel-Plated Aluminum

Elastomer Options

Material Temperature Limits
EPDM -51.1°C to 137.8 °C (-60°F to 280°F)
FKM -40°C to 177°C (-40°F to 350°F)
PTFE* 4.4°C to 104.4°C (40°F to 220°F)
Saniflex™ -28.9°C to 104.4°C (20°F to 220°F)
* 4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models only