YAMADA NDP20 DIAPHRAGM PUMP 3/4 Inch Fluid Port 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.
SPECIFICATION :
- Handles a wide variety of fluids with high solids content
- Self Priming
- Ability to Run Dry
- Variable flow rate and discharge pressure
- Portable
- Simple Installation
- Dead Head
- Shear Sensitive
- Safe Operation
- Submersible
- Pumping efficiency remains constant
- Cannot Overheat
- High Pressure capabilities
- No mechanical seals, couplings or motors
- No pressure relief or bypass needed
PRODUCT DESCRIPTION :
- Unified Air Valve Concept – 2 common size air valve assemblies used for 6 sizes of pumps
Reducing reassembly confusion and parts inventory - 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 YAMADA NDP20 DIAPHRAGM PUMP :
- 31.7 Gallons/Minute
3/4″ NPT Fluid Port - Intake and 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 Temperature
- 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 kgf/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
ADVANTAGES :
- 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 diaphragm pump 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.
