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

*A note concerning materials. This applies to all high-viscosity products. 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

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.