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.

Click on the model number to download the product datasheet (specifications, dimensions, and performance curves).

Body Material		P: GF Polypropylene （PP-GF）	V: PVDF-CF
Diaphragm Material
C: Polychloloprene (CR)		NDP-P50BPC （854827）	－
N: Buna N (NBR)		NDP-P50BPN （854828）	－
E: Ethylene Propylene Diene Monomer (EPDM)		NDP-P50BPE （854829）	NDP-P50BVE （854843）
V: Fluorelastomer (FKM)		NDP-P50BPV （854830）	NDP-P50BVV （854844）
T: Polytetrafluoroethylene (PTFE)		NDP-P50BPT （854831）	NDP-P50BVT （854845）
H: Thermoplastic Polyester Elastomer (TPEE)		NDP-P50BPH （854832）	NDP-P50BVH （854846）
S: Thermoplastic Olefinic Elastomer (TPO)		NDP-P50BPS （854833）	NDP-P50BVS （854847）
H/T: Thermoplastic Polyester Elastomer (TPEE)		NDP-P50BPH/T （854834）	－
W: Polytetrafluoroethylene + Ethylene Propylene Diene Monomer (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.

Download LiteratureCatalogs and Various Manuals