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- Non-Lube Air Valve - The patented air valve on all Yamada NDP-series pumps never needs lubrication. Plus it is easily replaced without disassembling the pump! (U.S. Patent #5,002,468)
Non-Stalling Air Valve - Patented design (Patent #5,002,469) eliminates stalling. Special noncentering, spring loaded shifters ensure consistent, positive switching every stroke!
- Outside Accessible Air Valve - Any inspection or maintenance of the air valve can be performed without removing the pump from installation.
- Leak-Free Flange Connections - Bolted flange-to-flange connections help eliminate leaks at mating surfaces and simplifies reassembly after maintenance. Many competitive pumps use leak-prone clamp bands.
- Extended Performance Diaphragm - All Yamada diaphragms are manufactured from high quality, virgin materials. As a result, they last up to twice as long as diaphragms found in many competitive pumps.
- Built-in Abrasion Resistance - Yamada pumps are designed without rotating parts. As a result, they can easily handle abrasive liquids such as ceramic slip, sand slurries, and enamel frit without damage.
- Corrosion-Resistant Air Motor - Anodized coating or Ryton construction resists the corrosive effects of spills, humidity, and pollution.
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