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Stainless steel piston check ball, replacement part 90948

Aro

ARO 90948 Replacement Check Stainless Steel accessory

SKU CH-B9MC-T3Q4E

Stainless steel replacement check ball fits ARO 90948 piston pumps and matches Grainger 4RN35, 4RN36

  • MaterialHAWA
  • Stainless steel construction resists corrosion for long service life
  • Piston replacement check ball restores reliable pump operation
  • Compatible with Grainger part numbers 4RN35 and 4RN36
  • Fits manufacturer models 650409, NM2304B-11-311 and NM2304B-41-311
  • New Aro 90948 part ensures exact fit and performance

Replacement check ball for ARO pumps

The ARO 90948 is a piston replacement check ball machined from HAWA stainless steel. It is designed for technicians servicing compatible ARO pump models who need a direct-fit component to restore proper valve function.

Compatible with listed Grainger and manufacturer

This check ball matches Grainger part numbers 4RN35 and 4RN36 as well as manufacturer model numbers 650409, NM2304B-11-311 and NM2304B-41-311. It will not fit pumps that require a different ball diameter, material specification or seat geometry.

HAWA stainless steel construction

The HAWA stainless steel body resists corrosion and wear in demanding fluid-transfer applications. Its precision-formed spherical profile ensures consistent sealing against the valve seat during repeated cycling.

Highlights

  • Stainless steel construction resists corrosion for long service life
  • Piston replacement check ball restores reliable pump operation
  • Compatible with Grainger part numbers 4RN35 and 4RN36
  • Fits manufacturer models 650409, NM2304B-11-311 and NM2304B-41-311
  • New Aro 90948 part ensures exact fit and performance

Specifications

MaterialHAWA
BrandARO

Questions about this item

Which ARO 90948 replacement check model fits my pump?

The ARO 90948 piston replacement check ball fits Grainger 4RN35 and 4RN36, and manufacturer models 650409, NM2304B-11-311 and NM2304B-41-311.

What does the stainless steel check ball do inside the pump?

The stainless steel ball acts as a piston check valve, sealing against back-flow during each stroke to keep fluid moving in one direction.

What connection standard does the ARO 90948 use and what pressure does it handle?

The ARO 90948 is a drop-in piston check ball; its pressure rating is set by the pump model it fits, not by a separate connection standard.

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