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NDP-20 Series
  • ndp201.jpg
  • ndp-20ba.jpg
  • ndp-20bs.jpg

NDP-20 Series

Categories: NDP: Standard

Compact and High Water Discharge!
- Safe Design with Intrinsically Explosion-proof Specification. An air-powered diaphragm pump that can transport highly flammable liquids at high pressure.
- Fully self-suction type that can pump out fluid efficiently, with no pump-priming required.
- This series of diaphragm pumps are suitable for slurry without the risk of leakage due to seal friction.

■ Main Applications
Collection of Waste Liquid/Sludge/Supply of Paint To Roll Coater/Collection of Cutting Oil/Application of Adhesives/Application of Mold Release Agent/Mold Coating Material
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）		 P: GF Polypropylene
（PP-GF）
Diaphragm Material
C: Neoprene
(CR)		 NDP-20BAC
(851316)		 NDP-20BSC
(851321)		 NDP-20BPC
(851663)		 NDP-20BPC-FL
(853819)
N: Buna N (NBR)
(NBR)		 NDP-20BAN
(851317)		 NDP-20BSN
(851322)		 NDP-20BPN
(852596)		 NDP-20BPN-FL
(853820)
E: EPDM(EPDM) NDP-20BAE
(851318)		 NDP-20BSE
(851323)		 NDP-20BPE
(852407)		 NDP-20BPE-FL
(853821)
V: Viton(R)
(FKM)		 NDP-20BAV
(851319)		 NDP-20BSV
(851324)		 NDP-20BPV
(852597)		 NDP-20BPV-FL
(853822)
T: PTFE NDP-20BAT
(851320)		 NDP-20BST
(851325)		 NDP-20BPT
(851664)		 NDP-20BPT-FL
(853823)
H: Hytrel(R)
(TPEE)		 NDP-20BAH
(851729)		 NDP-20BSH
(851730)		 NDP-20BPH
(851734)		 NDP-20BPH-FL
(853824)
S: Santoprene(R)
(TPO)		 NDP-20BAS
(852690)		 NDP-20BSS
(852691)		 NDP-20BPS
(852692)		 NDP-20BPS-FL
(853825)
H/T: Hytrel(R)
(TPEE)		 NDP-20BAH/T
(851875)		 NDP-20BSH/T
(851876)		 NDP-20BPH/T
(851877)		 NDP-20BPH/T-FL
(853826)
Wetted Parts Material
Ball Valve NDP-20B〇H/T: PTFE　Others: Same as the diaphragm material
Valve Seat SMS1025 SUS316 PP-GF PP-GF
Valve Stopper ADC12 SCS14 PP-GF PP-GF
Center Disk NDP-20BAT: A5056
Others: SUS316		 SUS316 PP-GF
SUS13 (Insert material)		 PP-GF
SUS13 (Insert material)
Specifications
Nominal Diameter 3/4"(20 mm)
Material Connection Suction Port Rc 3/4 JIS flange
10K 20A equivalent
Discharge Port Rc 3/4 JIS flange
10K 20A equivalent
Air Connection Supply Port Rc 1/4 (W/air valve)
Exhaust Port Rc 3/4 (W/silencer)
Air Supply Pressure 0.2~0.7 Mpa *1
Maximum Discharge Pressure 0.7MPa
Water Discharge/Cycle

Fluorine resin diaphragm: 240 mL *2 Other diaphragm: 350 mL *2
Maximum Flow Rate

Fluorine resin diaphragm: 100 L/min *3 Other diaphragm: 110 L/min *3
Maximum Air Consumption Fluorine resin diaphragm: 1400 L/min (ANR) Other diaphragm: 1200 L/min (ANR)
Maximum Size Solid Maximum 2 mm
Suction Head Lift NDP-20B○T: 1.5 m Others: 3 m
Net Weight 9.0 kg 14.0 kg 8.0 kg 8.0 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. The discharge will differ depending on factors such as the liquid to be transferred and the piping conditions.

*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.

 

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