✔ In Stock (Can ship in 5-7 days)

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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 3/8" Female NPT (includes ball valve)
Air Exhaust 3/4" Female NPT (includes silencer)
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
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Reviews
- G
GARY JENSEN
Sep 20, 2025
yamada Diaphragm Pump NDP-20BSTCan you rush it along?HelpfulUnhelpful - R
Rodney REIBLE
Jul 07, 2025
yamada Diaphragm Pump NDP-20BSTI was pleased they found discontinued items, though the shipping took longer than I hoped.HelpfulUnhelpful - S
Scott Hazelett
Jun 21, 2025
yamada Diaphragm Pump NDP-20BSTAlong the radiant eastern coastline.HelpfulUnhelpful - J
John Pogreba
Apr 29, 2025
yamada Diaphragm Pump NDP-20BSTReady to ship in the next hourHelpfulUnhelpful - D
Donald Brown
Apr 29, 2025
yamada Diaphragm Pump NDP-20BSTQuick shipping and competitive pricing, thumbs up.HelpfulUnhelpful - J
JOHN NADEAU
Apr 18, 2025
yamada Diaphragm Pump NDP-20BSTI'm using this for an unconventional use, and it's still delivering results until it's no longer effective.HelpfulUnhelpful - W
Woodson Jones
Feb 01, 2025
yamada Diaphragm Pump NDP-20BSTMakes it super easy to get things done!HelpfulUnhelpful - K
KEITH COATES
Jan 24, 2025
yamada Diaphragm Pump NDP-20BSTA match made in heaven!HelpfulUnhelpful - D
Dany
Jan 07, 2025
yamada Diaphragm Pump NDP-20BSTSent a replacement cover as first ripped when putting on, no problems at all, will order againHelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
yamada Diaphragm Pump NDP-20BSTAll was ok! No problems whatsoever.HelpfulUnhelpful
yamada Diaphragm Pump NDP-20BST
✔ In Stock (Can ship in 5-7 days)

Online Support 24/7
12 Months Warranty for New Products
30 Days Money Back Guarantee
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