Graco 15A179 Diaphragm – OEM Regulator Seal
The Graco 15A179 Diaphragm is a high-quality OEM component that provides a flexible and durable seal inside Graco mechanical and pneumatic regulators, ensuring consistent pressure control and protecting internal components.
Product Overview
This diaphragm is engineered to handle repeated flexing and high-pressure cycles without fatigue. By forming a tight seal between moving parts, it prevents leaks, maintains smooth operation, and extends the life of the regulator assembly. Its OEM design ensures perfect compatibility with Graco regulators.
Key Features
- Genuine Graco OEM part — Part Number: 15A179
- Durable and flexible sealing surface for high-cycle performance
- Maintains tight seal under varying pressures
- Resists fatigue, stretching, and deformation over time
- Critical for proper operation of regulator assemblies
Technical Specifications
| Part Number |
15A179 |
| Description |
Diaphragm / Seal |
| Usage |
Mechanical and pneumatic regulator assemblies |
| Flexibility |
High fatigue-resistance for repeated cycles |
| Weight |
Approx. 0.055 lb |
Compatible Systems
- Graco Mechanical Fluid Pressure Regulators
- Graco Back-Pressure Regulators
- Other Graco pneumatic regulator assemblies requiring a flexible internal seal
Installation
To install the Graco 15A179 Diaphragm:
- Depressurize the regulator completely before disassembly.
- Carefully remove the regulator cap or housing.
- Remove the old diaphragm and inspect internal components for wear.
- Install the new 15A179 diaphragm, ensuring it is properly seated and aligned.
- Reassemble the housing, aligning all parts correctly.
- Repressurize slowly and test for proper sealing and regulator operation.
Maintenance Advice
- Inspect the diaphragm during routine regulator maintenance.
- Check for cracking, thinning, or deformation.
- Replace the diaphragm immediately if any damage is observed to prevent leaks or regulator malfunction.
- Follow proper torque specifications when reassembling the regulator housing.
Frequently Asked Questions
It acts as a flexible seal, isolating internal components and allowing the regulator to maintain stable pressure without leaks.
Yes, it is an OEM diaphragm specifically designed for Graco mechanical and pneumatic regulators.
It is commonly used in Graco mechanical fluid pressure regulators and back-pressure regulators.
Inspect during regular maintenance or if you notice pressure instability. Replace immediately if any wear or damage is detected.
