NDP-50 Series

Categories: NDP: Standard

Simple Structure for Easy Maintenance!
An air-powered diaphragm pump that can transport highly flammable liquids.
Fully self-suction type that can pump out fluid efficiently, with no pump-priming required.
The safety structure does not require explosion-proof measures, so it can be used anywhere. By simply opening and closing the valve, cutting off the flow at the end point is possible or water discharge can be controlled easily and safety.
The NDP-50 series has a nominal diameter of 2" (50 mm) and a maximum flow rate of approximately 630 L/min. The maximum size solid is 8 mm or less.

■ 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/

CONTACT

FEATURES

■ Independent Left and Right Pilot Valves
These activate the air switch valve at the stroke limit, and are also completely oil-free. Dynamic seals are eliminated as independent left and right types.
It is resistant to abrasion and ensures stable pump operation over a long period of time.

■ Yamada’s Proprietary Design Air Switch Valve “C-Spool”
The air switch valve in the center section of the diaphragm pump is completely oil-free, so it does not require regular lubrication.
The operation assist using a C-spring suppresses stoppages during operation, and achieves stable operation.

The C-spring Prevents Stoppages during Operation Achieves stable operation.	Equipped with a Reset Button Downtime due to pump stoppages in the case of wear of the air switch valve is kept to a minimum.

Completely Oil-free Both the air switch valve and the pilot valve that activates the air switch valve at the stroke limit are designed to be oil-free. Does not require regular lubrication.	Simple Replacement No need to disassemble the pump when replacing it.

SPECIFICATIONS

Body Material		A: Aluminum (ADC12/AC4C-T6)	S: Stainless Steel (SCS14)	F:Cast Iron (FC250)	P:GF Polypropylene (PP-GF)	V:CF Kynar(R) (PVDF-CF)
Diaphragm Material
C: Neoprene (CR)		NDP-50BAC (852661)	NDP-50BSC (852663)	NDP-50BFC (852834)	NDP-50BPC (852665)	－
N: Buna N (NBR)		NDP-50BAN (852329)	NDP-50BSN (852332)	NDP-50BFN (852830)	NDP-50BPN (852335)	－
E: EPDM		NDP-50BAE (852662)	NDP-50BSE (852664)	NDP-50BFE (852835)	NDP-50BPE (852666)	NDP-50BVE (853272)
V: Viton(R) (FKM)		NDP-50BAV (852313)	NDP-50BSV (852314)	NDP-50BFV (852833)	NDP-50BPV (852315)	NDP-50BVV (853273)
T: PTFE (PTFE)		NDP-50BAT (852331)	NDP-50BST (852334)	NDP-50BFT (852832)	NDP-50BPT (852337)	NDP-50BVT (852484)
H: Hytrel(R) (TPEE)		NDP-50BAH (852330)	NDP-50BSH (852333)	NDP-50BFH (852831)	NDP-50BPH (852336)	NDP-50BVH (852488)
S: Santoprene(R) (TPO)		NDP-50BAS (852713)	NDP-50BSS (852714)	NDP-50BFS (852836)	NDP-50BPS (852715)	NDP-50BVS (852776)
H/T: Hytrel(R) (TPEE)		NDP-50BAH/T (853029)	NDP-50BSH/T (853030)	NDP-50BFH/T (853031)	NDP-50BPH/T (853032)	－
W: PTFE+EPDM		NDP-50BAW (855293)	NDP-50BSW (855295)	NDP-50BFW (855298)	NDP-50BPW (855300)	NDP-50BVW (855303)
Wetted Parts Material
Flat Valve		NDP-50B○H/T,B○W: PTFE Others: Same as the diaphragm material
Valve Seat		NDP-50BAT,B○W: A5056 Others: Same as the diaphragm material	NDP-50BST,B○W: SUS316 Others: Same as the diaphragm material	NDP-50BFT: SUS316 Others: Same as the diaphragm material	PP	PTFE
Valve Stopper		Same as the body material (integrated type)
Center Disk		A5056	SUS316	SS400	PP-GF SCS13(Insert material)	PVDF-CF SCS13 (Insert material)
Specifications
Nominal Diameter		2"(50 mm)
Material Connection	Suction Port	JIS flange 10K 50A equivalent		Rc 2	JIS flange 10K 50A equivalent
	Discharge Port
Air Connection	Supply Port	Rc 3/4 (W/air valve)
	Exhaust Port	Rc 1 (W/silencer)
Air Supply Pressure		0.2～0.7 MPa *1
Maximum Discharge Pressure		0.7 MPa
Water Discharge/Cycle		NDP-50B○T: 2500mL NDP-50B○W: 1800mL Other diaphragm: 4300mL			NDP-50B○T: 2100mL NDP-50B○W: 2000mL Other diaphragm: 4300mL
Maximum Flow Rate		NDP-50B○T: 600 L/min 3 NDP-50B○W: 630 L/min 3 Other diaphragm: 660 L/min *3			NDP-50B○T: 550 L/min 3 Other diaphragm: 600 L/min 3
Maximum Air Consumption		NDP-50B○W: 6400 L/min（ANR） Other diaphragm: 6300 L/min（ANR）			NDP-50B○W: 5600 L/min（ANR） Other diaphragm: 6000 L/min（ANR）
Maximum Size Solid		Maximum 8 mm
Suction Head Lift		NDP-50B○W: 2 m　NDP-50B○T: 3 m Others: 5 m
Net Weight		NDP-50BAT: 32.5 kg NDP-50BAW: 33.5 kg Others: 34.5 kg	NDP-50BST: 58.5 kg NDP-50BSW: 59.5 kg Others: 62.0 kg	NDP-50BFT: 61.5 kg NDP-50BFW: 62.5 kg Others: 65.0 kg	35.0 kg	41.0 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.