NDP-P50 series (Maximum corrosion resistance)

■ Highly Corrosion-resistant Polypropylene (PP-GF) is Used for the Center Body.
The product is resistant to corrosion and rust, making it suitable for transferring chemicals and a variety of conveying liquids.

■ 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.

◆ Air Switch Valve “C-Spool”

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.

Body Material		P: GF Polypropylene （PP-GF）	V: CF Kynar(R) （PVDF-CF）
Diaphragm Material
C: Neoprene (CR)		NDP-P50BPC （854827）	－
N: Buna N (NBR)		NDP-P50BPN （854828）	－
E: EPDM		NDP-P50BPE （854829）	NDP-P50BVE （854843）
V: Viton(R) (FKM)		NDP-P50BPV （854830）	NDP-P50BVV （854844）
T: PTFE		NDP-P50BPT （854831）	NDP-P50BVT （854845）
H: Hytrel(R) (TPEE)		NDP-P50BPH （854832）	NDP-P50BVH （854846）
S: Santoprene(R) (TPO)		NDP-P50BPS （854833）	NDP-P50BVS （854847）
H/T: Hytrel(R) (TPEE)		NDP-P50BPH/T （854834）	－
W: PTFE+EPDM		NDP-P50BPW (855305)	NDP-P50BVW (855308)
Body Material
Ball Valve		NDP-P50B○H/T,B○W: PTFE Others: Same as the diaphragm material
Valve Seat		PP	PTFE
Valve Stopper		Same as the body material (integrated type)
Center Disk		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
	Discharge Port	JIS flange 10K 50A equivalent
Air Connection	Supply Port	Rc 3/4
	Exhaust Port	Rc 1
Air Supply Pressure		0.2~0.7 MPa *1
Maximum Discharge Pressure		0.7 MPa
Water Discharge/Cycle		NDP-P50B○T: 2300mL *2 NDP-P50B○W: 1600mL *2 Other diaphragm: 4100mL *2
Maximum Flow Rate		NDP-P50B○T: 560 L/min *3 NDP-P50B○W: 580 L/min *3 Other diaphragm: 630 L/min *3
Maximum Air Consumption		NDP-P50B〇T: 5500 L/min （ANR） NDP-P50B〇W: 5700 L/min (ANR) Other diaphragm: 5000 L/min （ANR）
Maximum Size Solid		Maximum 8 mm
Suction Head Lift		NDP-P50B○W: 2 m　NDP-P50B○T: 3 m Others: 5 m
Net Weight		NDP-P50BPW:34.0 kg NDP-P50BP□:37.0 kg	NDP-P50BVW:40.0 kg NDP-P50BV□:43.0 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. It will differ depending on the usage conditions, etc.
*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.

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