Graco 15A181 Diaphragm – OEM Pneumatic Regulator Seal
The Graco 15A181 Diaphragm is a precision OEM membrane designed to deliver reliable sealing performance in Graco pneumatic pressure regulators. It isolates internal components while allowing smooth, stable pressure regulation through repeated cycles.
Product Overview
Engineered for durability, this diaphragm is built to flex repeatedly under high‑cycle conditions without losing integrity. Installed within the regulator’s diaphragm housing, the 15A181 forms a tight, resilient seal that prevents leaks, helps maintain consistent pressure, and extends the service life of the regulator assembly.
Key Features
- Genuine Graco OEM seal — Part Number: 15A181
- High‑flex diaphragm material designed for fatigue resistance
- Maintains a reliable seal under fluctuating pressure
- Resists stretching, cracking, and deformation over time
- Optimized for use in Graco pneumatic regulator assemblies
Technical Specifications
| Part Number |
15A181 |
| Description |
Diaphragm / Seal for Regulator |
| Application |
Pneumatic regulator assemblies (e.g. for Graco part 233760) |
| Material Behavior |
Flexible and fatigue-resistant for repeated cycles |
| Approximate Weight |
~0.05 lb |
Compatible Systems
- Graco pneumatic regulators such as model 233760
- Other self-relieving high-volume regulators that use a diaphragm seal
Installation
To install the Graco 15A181 Diaphragm properly:
- Completely depressurize the regulator before disassembly.
- Remove the diaphragm housing or cover carefully.
- Take out the existing diaphragm and inspect for wear or damage.
- Place the new diaphragm, ensuring it is seated flat and centered.
- Reinstall the housing cover, aligning all internal parts correctly.
- Slowly re-pressurize the regulator and test for proper function and seal integrity.
Maintenance Recommendations
- Check the diaphragm during routine regulator maintenance or when performance degrades.
- Look for signs of fatigue, such as thinning or surface cracking.
- Replace immediately if any damage is found to avoid leakage or failure.
- When reassembling, tighten housing fasteners according to manufacturer torque specifications.
Frequently Asked Questions
It creates a flexible seal that isolates internal parts while allowing the regulator to modulate pressure and prevent leaks.
Yes — the 15A181 Diaphragm is an OEM Graco part specifically made for its pneumatic regulators.
It is commonly listed for use with Graco pneumatic regulators like model 233760 and similar assemblies.
During preventive maintenance or if regulator behavior changes, check the diaphragm. Replace immediately if any signs of wear or damage appear.
