DIAPHRAGM PUMP YAMADA NDP20 AODD pumps provide a maximum flow rate of 31.7 gallons per minute. Pumps are available in aluminum, stainless steel (316), and polypropylene construction, with a wide variety of diaphragm materials.
Unified Air Valve Concept – 2 common size air valve assemblies used for 6 sizes of pumps
Truly No-Lubricated Air Valve – patented air valve on all NDP series pumps
Never requires lubrication or pre-packing
Non-Stalling – patented non-centering, 304SS spring-assisted shifter, ensuring a positive shift every time
GENERAL PUMP INFORMATION
Discharge volume Per Cycle : 31.7 Gallons/Minute
Fluid Port : 3/4” NPT
INTAKE & DISCHARGE CONNECTIONS
| Polypropylene ( PPG ) | 3/4″ Female NPT or 3/4″ ANSI Flange B16.5 #150 |
| Aluminum ( ADC-12 ) | 3/4″ Female NPT |
| Stainless Steel ( 316 ) | 3/4″ Female NPT |
| Air Inlet | 1/4″ Female NPT (includes ball valve) |
| Air Exhaust | 3/4″ Female NPT (includes silencer) |
MAXIMUM LIQUID TEMPERATURE1
Buna N : 180°F ( 82°C )
Neoprene : 180°F ( 82°C )
Santoprene : ( TPO ) 180°F ( 82°C )
EPDM : 212°F ( 100°C )
PTFE : 212°F ( 100°C )
Hytrel : ( TPE ) 248°F ( 120°C )
Viton : Fluoroelastomer 248°F ( 120°C )
Ultimate : 212°F ( 100°C )
| Air Supply Pressure ( All Models ) 20 to 100 PSI ( 1.4 to 7 kg/cm² ) | |
| Discharge Volume Per Cycle | Rubber diaphragm: 0.163 gallons ( 615 cc ) PTFE diaphragm: 0.143 gallons ( 539 cc ) |
| Maximum Cycles Per Minute | Rubber diaphragm: 195 PTFE diaphragm: 195 |
| Maximum Size Solid | 1/16″ ( 2.0 mm ) |
| Maximum Dry Suction Lift | Rubber-fitted pump capability: 18-feet |
| Air Motor | Aluminum – Metal Pumps Plastice – Plastic Pumps |
| Optional Coating | PTFE-coated |
| Other Options | Split manifold pumps |
| Model # | Description |
| 851514 | NDP-20BAC |
| 851515 | NDP-20BAN |
| 851516 | NDP-20BAE |
| 852098 | NDP-20BAH |
| 852693 | NDP-20BAS |
| 851517 | NDP-20BAV |
| 851518 | NDP-20BAT |
| 855227 | NDP-20BAU |
| 854059 | NDP-20BAC-PP |
| 854060 | NDP-20BAN-PP |
| 854061 | NDP-20BAE-PP |
| 854064 | NDP-20BAH-PP |
| 854065 | NDP-20BAS-PP |
| 854062 | NDP-20BAV-PP |
| 854063 – U | NDP-20BAT-PP |
| 854063 | NDP-20BAU-PP |
| 851519 | NDP-20BSC |
| 851520 | NDP-20BSN |
| 851521 | NDP-20BSE |
| 852099 | NDP-20BSH |
| 852694 | NDP-20BSS |
| 851522 | NDP-20BSV |
| 851523 | NDP-20BST |
| 855228 | NDP-20BSU |
| 854073 | NDP-20BSC-PP |
| 854074 | NDP-20BSC-PP |
| 854075 | NDP-20BSN-PP |
| 854078 | NDP-20BSE-PP |
| 854079 | NDP-20BSH-PP |
| 854076 | NDP-20BSS-PP |
| 854077 | NDP-20BSV-PP |
| 854077-U | NDP-20BST-PP |
| 851665 | NDP-20BPC |
| 852382 | NDP-20BPN |
| 852383 | NDP-20BPE |
| 852069 | NDP-20BPH |
| 852695 | NDP-20BPS |
| 852384 | NDP-20BPV |
| 851666 | NDP-20BPT |
| 853828 | NDP-20BPC-FLG |
| 853829 | NDP-20BPN-FLG |
| 853830 | NDP-20BPE-FLG |
| 853833 | NDP-20BPH-FLG |
| 853834 | NDP-20BPS-FLG |
| 853831 | NDP-20BPV-FLG |
| 853832 | NDP-20BPT-FLG |
| 854094 | NDP-20BPC-PP |
| 854095 | NDP-20BPN-PP |
| 854096 | NDP-20BPE-PP |
| 854099 | NDP-20BPH-PP |
| 854100 | NDP-20BPS-PP |
| 854098 | NDP-20BPT-PP |
| 854097 | NDP-20BPV-PP |
| 854098-U | NDP-20BPU-PP |
| 854108 | NDP-20BPC-PP-FLG |
| 854109 | NDP-20BPN-PP-FLG |
| 854110 | NDP-20BPE-PP-FLG |
| 854113 | NDP-20BPH-PP-FLG |
| 854114 | NDP-20BPS-PP-FLG |
| 854111 | NDP-20BPV-PP-FLG |
| 854112 | NDP-20BPT-PP-FLG |
| 854112-U | NDP-20BPU-PP-FLG |
ADVANTAGE :
- Rugged, Bolted Construction
All Yamada pumps feature bolted construction, which eliminates leaks and simplifies post-maintenance reassembly. Bolted construction is superior to clamp band retainers, which frequently require frustrating, unnecessary leakage rebuilds from misalignment during reassembly - Outside-Accessible Air Valve
Inspection or maintenance of every Yamada air valve may be performed without removing the pump from service. Outside accessible, making it easy to fix / inspect. - Unified Air Valve Concept
Common-size air valve assemblies reduce parts confusion and inventory - Pilot Valve
Unique to the Yamada design is an individual modular pilot valve that actuates the air valve. It is depressed slightly by the inner center disk creating a pressure drop at one end of the air valve, allowing shifting to occur. It is maintenance free with no cumbersome snap rings or lubricated dynamic O-rings to replace or repair.