NDP-500 series

The highest-flowing 2" pump on the market!

NDP-500 series has a nominal diameter of 2" (50 mm) and a maximum flow rate of approximately 780 L/min. The maximum size solid is 8 mm or less. 

■ Key features

・ Unparalleled Flow Rate: Highest-flowing 2" diaphragm pump available.
・ Superior Efficiency: Drastically reduces operation costs.
・ Simplified Maintenance: Easy to maintain with a universal fastener and square flanges.
・ Proven Technology: Utilizes reliable components for long-lasting performance.

■ Main Applications

Collection of Waste Liquid/Sludge/Transfer of Factory Wastewater/Transfer of Lubricant and Hydraulic Oil/Cleaning of Crude Oil and Raw Material Tanks/Collection of Rainwater/Wastewater Treatment during Regular Repair/Transfer of Latex/Transfer of Slurry/Mold Release Agent/
Body MaterialS: Stainless Steel
(SCS14)
Diaphragm Material
C: Neoprene
(CR)		NDP-500BSC
(855371)
N: Buna N
(NBR)		NDP-500BSN
(855372)
E: EPDMNDP-500BSE
(855373)
V: Viton(R)
(FKM)		NDP-500BSV
(855374)
T: PTFE
(PTFE)		NDP-500BST
(855375)
H: Hytrel(R)
(TPEE)		NDP-500BSH
(855376)
S: Santoprene(R)
(TPO)		NDP-500BSS
(855377)
H/T: Hytrel(R)
(TPEE)		NDP-500BSH/T
(855378)
W: PTFE+EPDMNDP-500BSW
(855379)
Wetted Parts Material
Ball Valve

NDP-500BSH/T, NDP-500BSW: PTFE

Others: Same as the diaphragm material

Valve Seat

NDP-500BST, NDP-500BSW: SUS316

Others: Same as the diaphragm material

Valve StopperSame as the body material (integrated type)
Center DiskSUS316
Specifications
Nominal Diameter2"（50 mm）
Material ConnectionSuction PortJIS flange 10K 50A equivalent
Discharge Port
Air ConnectionSupply PortRc 3/4 (W/air valve)
Exhaust PortRc 1 (W/silencer)
Air Supply Pressure0.2～0.7 MPa ※1
Maximum Discharge Pressure0.7 MPa
Water Discharge/Cycle

NDP-500BST: 2400 mL ※2

NDP-500BSW: 2000 mL ※2
Other diaphragm: 4300 mL ※2

Maximum Flow Rate

NDP-500BST: 680 L/min ※3
Other diaphragm: 780 L/min ※3

Maximum Air Consumption

NDP-500BST： 6900 L/min（ANR）
NDP-500BSW: 7000 L/min（ANR）
Other diaphragm: 6400 L/min（ANR）

Maximum Size SolidMaximum 8 mm
viscosity limitSelf-primingMaximum 3 Pa·s
pushMaximum 8 Pa·s
Suction Head Lift

NDP-500BST: 3m

Others: 5m

Net Weight

NDP-500BST: 57.8 kg

NDP-500BSW: 57.4 kg
Others: 60.0 kg



※1 The maximum supply air pressure for a type with a resin-made pump body will depend on the liquid temperature.

※2 The water discharge is provided as a rough approximation only. The discharge will differ depending on factors such as the liquid to be transferred and the piping conditions.

※3 Maximum flow rate is a value indicating the pump capacity. We recommend selecting a size that allows some leeway, taking into account the impact on the life span of the diaphragm