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Yamada Pumps NDP-25BSU, Model 855230, NDP-25 Series Air Operated Double Diaphragm Pump with High Performance PTFE/EPDM Backed Diaphragm. Stainless Steel Body, Aluminum Air Motor. 46.2 GPM Max Flow, 1" Female NPT Fluid Port.
Yamada Pumps NDP-25BSU, Model 855230, NDP-25 Series Air Operated Double Diaphragm Pump with High Performance PTFE/EPDM Backed Diaphragm. Stainless Steel Body, Aluminum Air Motor. 46.2 GPM Max Flow, 1" Female NPT Fluid Port.
Air Exhaust | 3/4" Female NPT (includes silencer) |
Air Inlet | 3/8" Female NPT (includes ball valve) |
Air Supply Pressure | 20 to 100 PSI (1.4 to 7 kgf/cm²) |
Diaphragm | High Performance PTFE/EPDM Backed |
Discharge Volume Per Cycle | 0.21 gallons (787 cc) |
Fluid Port | 1" Female NPT |
Liquid Temperature | 212°F (100°C) |
Material | Stainless Steel |
Max Cycles Per Minute | 210 |
Maximum Flow (GPM) | 46.2 GPM |
Max Suction Lift | 18 Feet |
Model Number | 855230 |
Model Series | NDP-25 |
Motor | Aluminum Air Motor |
Quick Specs | NDP-25BSU |
Solids (Inches) | 3/16" (4.8 mm) |
Features & Benefits |
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Port Dimensions Intake & discharge connection: Polypropylene (PPG) 1" Female NPT Kynar® (PVDF) 1" Female NPT Aluminum (ADC-12) 1" Female NPT Stainless Steel (316) 1" Female NPT Cast Iron 1" Female NPT Air inlet (incl. ball valve): 3/8" Female NPT Air exhaust (incl. silencer): 3/4" Female NPT ANSI Flange also available—consult Yamada. Maximum Liquid Temperature* Diaphragm Material Temperature Buna N 180°F (82°C) Neoprene 180°F (82°C) Santoprene® (TPO) 180°F (82°C) EPDM 212°F (100°C) PTFE 212°F (100°C) Hytrel® (TPEE) 248°F (120°C) Viton® fluoroelastomer 248°F (120°C) *The maximum liquid temperature for metal and Kynar® fitted pumps is determined by the elastomer (diaphragm material). Polypropylene pumps have a maximum liquid temperature of 180°F (82°C) regardless of diaphragm material. |
Notes |
All Polypropylene, Aluminum, Cast Iron, and SS Hytrel® fitted pumps include Hytrel® check balls and Buna N wetted o‑rings. Santoprene® fitted pumps include Santoprene® check balls and EPDM wetted o‑rings. Kynar® (PVDF) pumps fitted with Santoprene®, Hytrel®, or PTFE include PTFE check balls and o‑rings. Kynar®/EPDM fitted pumps include EPDM check balls and o‑rings. Viton® fitted pumps include Viton® check balls and o‑rings. Aluminum, Stainless Steel and Cast Iron pumps with a serial number prior to 487505 will require a kit without a "-1". |
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