SKU: 68108505155

Davey DynaDrive DD90-11NPT

Sale price$1152.90 Regular price$1281.00
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Davey DynaDrive DD90-11NPTThe Davey DynaDrive DD90 11NPT is built tough constant pressure for demanding water systems. Integrated Variable Speed Drive technology adjusts motor speed to maintain steady pressure whether you're running the shower, dishwasher, and washing machine at once or watering the garden. All stainless hydraulic components are built to resist corrosion and deliver years of reliable service. An integrated LCD panel makes it easy to monitor live system data

The Davey DynaDrive DD90-11NPT is built-tough constant pressure for demanding water systems. Integrated Variable Speed Drive technology adjusts motor speed to maintain steady pressure whether you're running the shower, dishwasher, and washing machine at once or watering the garden. All-stainless hydraulic components are built to resist corrosion and deliver years of reliable service. An integrated LCD panel makes it easy to monitor live system data and dial in your preferred pressure setting. An air purging valve simplifies priming and makes the system less susceptible to air leaks in your suction line.

For residential pressure boosting, agricultural systems, irrigation, and general water transfer. Indoor installation only. Two units can be linked for parallel operation with automatic lead-lag rotation (communication cable required).

Key Specs: 0.9 kW output, 220-240V, 1-1/4" NPT inlet / 1" NPT outlet, NSF/ANSI 61 certified

Features and Benefits

Durable Construction

  • Stainless steel construction on all hydraulic parts for corrosion and wear resistance
  • High-efficiency impeller profiles reduce power consumption and noise
  • 8-point casing attachment with O-ring seal for better sealing

Long-Lasting Performance

  • Totally enclosed fan-cooled motor
  • Sealed and greased-for-life bearings
  • Direct-mount impellers on motor shaft for longer motor and pump life
  • Quiet and economical operation
  • Easy to service motor

Consistent Pressure

  • Steady pressure output during high demand
  • Adjustable pressure in 5 psi increments (up to 87 psi max)

Easy Monitoring

  • LCD display shows pressure, frequency, current, and temperature
  • Warning indication for system faults

Protection

  • Dry run protection with automatic restart
  • Air purging valve for easier priming
  • Less susceptible to air leaks in suction line

Specifications

Electrical

  • Voltage: 220-240V
  • Frequency: 50-60 Hz
  • Input Power: 1.3 kW
  • Running Current: 8.6 Amps

Performance

  • Flow Rate @ 73 PSI: 9 GPM
  • Flow Rate @ 58 PSI: 19 GPM
  • Flow Rate @ 43 PSI: 24 GPM
  • Max Pressure: 80 PSI
  • Max Set Pressure: 87 PSI
  • Max Casing Pressure: 145 PSI
  • Default Operating Pressure: 60 PSI

Connections

  • Inlet: 1-1/4" NPT Female
  • Outlet: 1" NPT Male

Build

  • Stages: 5
  • Casing: 304 Stainless Steel
  • Impellers: 304 Stainless Steel
  • Pump Shaft: 316 Stainless Steel

Dimensions

  • Length: 18-1/8"
  • Width: 6-3/4"
  • Height: 23-1/2"
  • Weight: 46.3 lbs

Operating Conditions

  • Ambient Temp: 32-122°F
  • Max Humidity: 95%
  • Fluid Type: Clean, clear, non-corrosive, non-flammable; no fibers; little sand/silica or abrasives (max concentration 40 g/m³)

Documents

Spec Sheet

Installation Manual

 

Video

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68108505155

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4.1 ★★★★★
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Verified Purchase
Wafaa
Chelsea, US
★★★★★ 4
I would by again!
Good and lasted for over a year. A good quality product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
R
Verified Purchase
Richard Conner
Waukegan, US
★★★★★ 5
I'll Take Three!
I recently purchased the DUMOS Ergonomic Computer Gaming Chair, and I couldn't be happier with my decision! This chair combines comfort, style, and affordability in a way that truly exceeded my expectations. The PU leather lumbar support provides excellent comfort and proper posture, making long gaming or work sessions much more enjoyable. What really surprised me was the fantastic price—so good that I ended up buying three! I chose two in striking red and one in sleek blue for each person's room, and they all look fantastic. The build quality feels sturdy and durable, and the ergonomic design has already made a noticeable difference in my comfort levels. If you're looking for a stylish, comfortable, and budget-friendly gaming or office chair, I highly recommend the DUMOS Ergonomic Chair. It’s a great investment in your comfort and style!
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Reviewed in the United States on October 19, 2025
A
Verified Purchase
A armored vehicles R Us
Cuba, US
★★★★★ 3
Very comfortable wonderful chair
I like the chair it was very easy to assemble makes no noise when I'm going across the floor the size was perfect for me the stability was great the screw quality was very easy it's all very well put together got it on sale value for the money very good how do you just meant no problems it was great
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Reviewed in the United States on September 14, 2024
J
Verified Purchase
Jedi_Nomad
Houston, US
★★★★★ 5
excellent quality, Good Support
I got this on sale for $67. The process to assemble it was very straightforward and used an Allen wrench. It was rated as the best item in its category and had five stars. I wouldn't consider it a gaming chair, Although it tries to be one. It feels more like an office chair that was glam up to be a gaming chair. But it does an excellent job at supporting a tall large individual, Excellent Support, Good posture. Worth every penny, But not in the same category as a typical gaming chair. Lack some of the bells and whistles had a typical gaming chair would have, But every bit the money I paid for it. If you want something nicer then you need to buy like a $200+ Gaming chair with the bells and whistles.
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Reviewed in the United States on June 13, 2024
C
Verified Purchase
Country Doug
New York, US
★★★★★ 5
Very comfortable with good lower-back support
Most comfortable, well made, easy assembly office-gaming chair (very pleased)! *I suggest, HOLD-OFF popping the seat onto the upper-cylinder until AFTER assembling the back-rest onto the seat/arm-seat with back-rest as a unit...can then be popped onto the upper gas-cylinder(Much more stable than fighting with chair freely rolling and turning) while attempting to aligning the holes assembling the back-rest. Afterwards the seat with back-rest assembled can easily be popped onto to the upper-end of the gas-cylinder and we are good to go! * do pay attention to using the correct bubble-packed bolts for each assembly, as directed * all the holes align -up very precisely... so if screwing in the bolt(s) and after a couple-turns it gets hard-to-turn, we are 'cross-threading the bolt into the threaded hole...so back-out and realign the bolt as so it threads in very easy. * the bubble-pack of bolts are clearly labeled so as we easily know which ones go where. *0ne bubble-packet even includes a spare group just in case we lost one (like out in the grass-lawn)? * Included a T-handle alien-head wrench (all needed for total assembly) very nice for having around if any re-tightening needed. all speaks Quality! >>> Been using about a month now...And I REALLY like this office gaming chair _ very comfortable cushioned well and excellent lower-back support _ the faux-leather seems to be more thick and durable and stitching is NOT ripping-out (as my previous & more expensive chair had done with it's paper-thin faux leather) _ easy assembled chair seems very sturdy and solid, (yet light weight), in moving around, (not some wobbly contraption as my previous more expensive chair). _ a strong Five-Star rating!
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Reviewed in the United States on March 14, 2025

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