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NDP-5 Series
  • ndp51.jpg
  • ndp-5fdt.jpg
  • ndp-5fpt.jpg
  • ndp-5fst.jpg
  • ndp-5fvt.jpg

NDP-5 Series

Categories: NDP: Standard

Lightweight and Compact!
- Safe Design with Intrinsically Explosion-proof Specification. 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.
- 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-5 series has a nominal diameter of 1/4" (8 mm) and a maximum flow rate of approximately 11 L/min.

*Slurry cannot be handled because it is a flat valve type.

■ Main Applications
Circulation of Mold Release Agent/Pumping Out Sprays, Factory Wastewater, and Waste Oil/Transfer of Flammable Liquids in Explosion-proof Areas/Supply of Paint to Roll Coater/Drainage from Power Plants/Waste Liquid Collection during Piping and Tank Cleaning/Fuel Transfer in Explosion-proof Area/Transfer of Clay and Glazes/Transfer of Food Ingredients and Additives/Transfer of Alcohol, Disinfectants and Solvents/Supplying Oil, Coolant Fluid, Paint, Etc./Transfer of Anhydrous Powder
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.
cspring.jpg resetbtn.jpg

 

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.
oilfree.jpg  

SPECIFICATIONS

- Click on a model to see its Performance Curve
Body Material A: Aluminum
(ADC12)		 S: Stainless Steel
（SCS14）		 P: GF Polypropylene
（PP-GF）		 V: CF Kynar(R)
（PVDF-CF）		 D: Groundable Acetal（POM）
Diaphragm Material
T: PTFE NDP-5FAT
(851496)		 NDP-5FST
(851497)		 NDP-5FPT
(851306)		 NDP-5FVT
(852110)		 NDP-5FDT
(853779)
Wetted Parts Material
Valve Seat SUS316 SUS316 PP-GF PVDF-CF POM
Valve Stopper SUS316 SUS316 PP PVDF-CF POM
Center Disk A5056 SUS316 PP
SUS304
(Insert material)		 PVDF-CF
SUS304
(Insert material)		 POM
SUS304
(Insert material)
Specifications
Nominal Diameter 1/4"(8mm)
Material Connection Suction Port Rc1/4
Discharge Port Rc1/4
Air Connection Supply Port Rc 1/4 (W/air valve)
Exhaust Port Rc 3/8 (W/internal silencer) *1
Air Supply Pressure 0.2～0.7 Mpa*2
Maximum Discharge Pressure 0.7 MPa
Water Discharge/Cycle 20 mL *3
Maximum Flow Rate 11 L/min *4
Maximum Air Consumption 250 L/min（ANR）
Maximum Size Solid － *5
Suction Head Lift 1m
Net Weight 1.6 kg 2.7kg 1.3 kg 1.7 kg 1.4 kg

*1 The silencer is built into the pump body. Rc 3/8 threaded holes are provided for connection to a hose that leads exhaust air to a duct, etc.

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

*3 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.

*4 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.

*5 Slurry cannot be handled because it is a flat valve type.

 

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