Graco 127557 22 mm Gauge Kit – Precision Fluid Pressure Monitor
The Graco 127557 22 mm Gauge Kit provides reliable and accurate pressure monitoring for high-performance airless sprayer systems. Built with a stainless-steel diaphragm and rated for up to 5,000 psi, this gauge is engineered for tough job-site conditions and demanding coating applications.
Key Features
- High-accuracy 22 mm diaphragm gauge with ±1% full-scale precision
- Corrosion-resistant stainless steel and brass housing
- Optimized flow path to reduce pressure surges and maintain pump efficiency
- Compact design suitable for retrofitting into most spray rigs
- Compatible with a wide range of fluid viscosities and aggressive chemicals
Benefits
- Improves pressure control for consistent spray performance
- Provides real-time pump pressure monitoring to help prevent overloads
- Corrosion-resistant materials extend service life in harsh environments
- Simple installation without major modifications or adapters
Compatible Machines
| Graco Sprayer / Model |
| 24U618 (Gas / Petrol cart) |
| 24U985 (Electric / Electrostatic or similar pump-drive) |
These model numbers come directly from Graco parts documentation, confirming compatibility for the 127557 gauge.
How to Install
- Depressurize the system fully before installation.
- Thread the gauge into a 1/4″ NPT(F) fluid port on the pump manifold.
- Tighten according to torque specifications to avoid diaphragm damage.
- Flush the system to remove trapped debris after installation.
- Verify accuracy using a reference or calibrated pressure source.
Maintenance Tips
- Inspect the lens regularly for scratches or clouding
- Calibrate or verify pressure readings periodically to maintain accuracy
- Use clean fluid lines when flushing harsh solvents to protect the diaphragm
- Relieve pressure during long-term storage to reduce diaphragm stress
Applications
This gauge kit is ideal for:
- Contractor airless sprayers used for high-pressure coatings
- Industrial systems requiring precise fluid pressure readings
- Retrofitting older spray rigs to improve pressure control and safety
Frequently Asked Questions
The gauge supports pressures up to 5,000 psi, making it suitable for most high-pressure airless sprayer systems.
The Graco 127557 22 mm Gauge Kit is officially listed for models 24U618 and 24U985. For other sprayers, confirm compatibility by checking the parts diagram for a 1/4″ NPT fluid port and matching pressure requirements.
For typical job-site use, calibration verification every 6–12 months (or around 1,000 hours of operation) helps maintain consistent accuracy.
Summary
The Graco 127557 22 mm Gauge Kit is a reliable upgrade for airless sprayers needing accurate, durable, high-pressure fluid monitoring. With rugged construction, excellent precision, and straightforward installation, it delivers dependable performance for both new systems and retrofit applications.
