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Graco 112348 Regulator Diaphragm

The Graco 112348 Regulator Diaphragm ensures stable pressure control in low-pressure fluid and back-pressure regulators. Built from durable Buna-N / nylon fabric for long service life.

  • • Compatible with Graco 238159 and 236281 Series A regulators
  • • Fits systems covered under Graco Manual 308325
  • • Ideal for paint, sealant, and coating applications
  • • Replacement part in Repair Kit 236589

Retail Price: $59.75
You save: $0.6 (1.00%)
Our Price: $59.15
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About the Graco 112348 Regulator Diaphragm

Compatible Machines / Regulators

  • • Graco Regulator Model 238159 (Series A)
  • • Graco Regulator Model 236281 (Series A)
  • • Other compatible Fluid Pressure Regulators covered under Graco Manual 308325

Product Overview

The Graco 112348 Regulator Diaphragm is a high-quality replacement part designed for use in Graco’s Fluid Pressure Regulators and Back-Pressure Regulators. This diaphragm plays a critical role in maintaining consistent pressure control within low-pressure fluid systems. Manufactured from nylon-fabric reinforced Buna-N material, it ensures excellent flexibility, chemical resistance, and long-lasting durability in industrial spray and fluid applications.

Technical Specifications

Part Number 112348
Part Type Regulator Diaphragm
Material Nylon Fabric / Buna-N Base
Used With Fluid & Back-Pressure Regulators
Pressure Range 3 – 100 psi (0.02 – 0.7 MPa / 0.2 – 7 bar)
Included In Repair Kit 236589
Typical Applications Paint Sprayers, Sealant Pumps, Industrial Coating Systems

Key Features & Benefits

  • • Precision-engineered for optimal pressure regulation in Graco systems.
  • • Durable Buna-N / nylon-fabric construction provides excellent wear and chemical resistance.
  • • Maintains consistent fluid flow and output pressure in demanding applications.
  • • Easy to install as a direct replacement part for supported regulator models.
  • • Helps reduce system downtime and extend overall equipment life.

Frequently Asked Questions

It acts as a flexible barrier inside the pressure regulator, allowing the regulator to maintain and control consistent output pressure for fluid or air systems.

The diaphragm fits Graco Regulator Models 238159 (Series A), 236281 (Series A), and other regulators specified in Graco Manual 308325 for low-pressure fluid control systems.

The Buna-N (Nitrile) base offers good compatibility with oils and many fluids, but it may not be ideal for highly aggressive solvents or acids. Always check chemical compatibility before installation.

Yes. It can be replaced by following the steps in the corresponding Graco service manual. Make sure the system is depressurized before performing any maintenance.

Note: Always verify your regulator’s exact model and series before ordering replacement parts to ensure compatibility.

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