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NDP-25BFN

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Yamada Pumps NDP-25BFN Type, Model 851533 NDP-25 Series, Air Operated Double Diaphragm Pump, Buna N Diaphragm, Buna N Flat Check Valve / O-Rings, Cast Iron Material, 46.2 GPM Max Flow, 1" NPT Fluid Port, 3/8" Female NPT (includes ball valve) Air Inlet, 3/4" Female NPT (includes silencer) Air Exhaust, Aluminum Air Motor, 18 Feet Max Suction Lift

$1,635.00

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Item: NDP-25BFN | Model #: 851533

Repair Parts Exploded View Diagram

Overview
Series Info
Reviews
Literature/Manuals
Repair Parts

NDP-25BFN

Actual Weight	47
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	Buna-N
Discharge Volume Per Cycle	0.23 gallons (862 cc)
Fluid Port	1" NPT
Liquid Temperature	180°F (82°C) Max
Material	Cast Iron
Max Cycles Per Minute	210

Maximum Flow (GPM)	46.2 GPM
Max Suction Lift	18 Feet
Model Number	851533
Model Series	NDP-25 Models
Motor	Aluminum Air Motor
Solids (Inches)	3/16" (4.8 mm)
Type	851533
Valve / Seat / O-Ring	Buna-N

NDP-25 Series Information

Features & Benefits
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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Type	Title		Link
	Yamada Pumps NDP-25 Pump Manual		View
	Yamada Pumps NDP-25 PP Pump Manual		View
	Yamada Pumps NDP-25 Pump Specifications		View
	NDP-25 Operation Manual		View
	NDP-25BFC Yamada Pump Repair Parts Exploded View		View