Graco 15A180 Diaphragm – OEM Pneumatic Regulator Seal
The Graco 15A180 Diaphragm is a flexible, high‑quality OEM component designed to provide a reliable sealing surface in Graco pneumatic regulators. It plays a critical role in maintaining accurate pressure control by isolating the regulator’s moving parts from fluid or air leakage.
Product Overview
This diaphragm is built to endure frequent flexing and repeated pressure cycles. Installed within the regulator’s diaphragm housing, it ensures smooth operation by forming a tight and durable seal, helping to resist fatigue, stretching, or deformation over time. As a genuine Graco part, it is engineered for compatibility and long-term performance in Graco pneumatic regulator assemblies.
Key Features
- Genuine Graco OEM component — Part Number: 15A180
- Flexible diaphragm designed for repeated flexing
- Resists fatigue and maintains seal integrity under pressure
- Helps prevent internal leaks in pneumatic regulators
- Supports reliable and consistent pressure regulation
Technical Specifications
| Part Number |
15A180 |
| Description |
Diaphragm / Seal for Regulator |
| Usage |
Pneumatic regulator assemblies (e.g., Graco 233760, 233769, 234266, etc.) |
| Material Behavior |
Flexible, fatigue-resistant for repeated cycles |
| Approximate Weight |
~0.05 lb |
Compatible Systems
- Graco Pneumatic Regulators such as models 233760, 233769, 233770
- Graco Pneumatic Pressure Regulator Assemblies that require a flexible sealing diaphragm
Installation
To properly install the Graco 15A180 Diaphragm:
- Depressurize the regulator fully before opening the housing.
- Remove the diaphragm cover or housing carefully.
- Remove the old diaphragm and inspect for wear, cracking, or deformation.
- Insert the new 15A180 diaphragm, ensuring it sits flat and aligned correctly.
- Replace the diaphragm cover and reassemble the housing, aligning all parts properly.
- Repressurize slowly and test the regulator for proper sealing and functionality.
Maintenance Recommendations
- Inspect the diaphragm during regular maintenance or if regulator performance changes.
- Check for signs of fatigue, tears, or thinning.
- Replace the diaphragm immediately if any damage is observed to prevent leaks or failure.
- When reassembling, torque all housing fasteners to the manufacturer’s specification.
Frequently Asked Questions
The diaphragm provides a flexible seal inside the regulator, isolating internal components and preventing fluid or air from leaking, while still allowing pressure regulation.
Yes — the 15A180 Diaphragm is an OEM Graco component designed for use in compatible Graco pneumatic regulators.
It's used in several Graco pneumatic regulators, including part numbers 233760, 233769, 233770, 234266, 234270, and 234271, according to Graco’s parts diagrams.
You should inspect it during regular maintenance or if you observe pressure instability. Replace it if it shows any signs of wear, cracking, or deformation.
