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
■ 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.
◆ 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.
Dimentional drawing
Performance curve
Downloads
◆ Performance Curve
◆ Dimensional Drawings
◆ CAD Data
Parts List
| Body Material | A: Aluminum （ADC12） |
S: Stainless Steel （SCS14） |
P: GF Polypropylene （PP-GF） |
V: CF Kynar(R) （PVDF-CF） |
D: Groundable Acetal （POM） |
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| Diaphragm Material | |||||||
| T: PTFE | NDP-5FAT （851496） |
NDP-5FST （851497） |
NDP-5FPT （851306） |
NDP-5FVT （852110） |
NDP-5FDT （853779） |
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Accessories
◆ Air Unit
2piece set (Air Filter + Regulator)
Removes moisture and debris from the supply air and protects the pump mechanism.
An air filter and regulator are included in one set depending on the usage conditions.
Yamada diaphragm pumps can be operated without lubrication with two sets of air except under the following conditions.
● DP-10 series, NDP-H series
● For continuous operation of minimum 1 hour
● For use with fluids and environments of minimum 70°C
● 2-piece set has a 1/4" inner diameter.
*Prepare the connection materials separately according to the usage conditions.
*Use the dedicated bracket and air hose when attaching to the pump.