NDP-5 series
NDP-5 series
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
Features
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.
◆ 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. |
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| 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. |
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Specifications
| 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） |
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| 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) |
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| 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.
