Overview
The Moore 7298-56/12LB Nullmatic pressure regulator is a compact, proven pneumatic control device designed for stable pressure regulation in industrial compressed air networks. Made in the USA, this model 40H50 unit delivers consistent performance across a wide range of pneumatic applications. The Nullmatic series is recognized for its responsive control characteristics and reliable operation in critical air distribution systems.
Key Features
- Compact design with 1/4 NPT port connections for standard pneumatic line integration
- Operating pressure range of 1–50 PSIG for flexible system configuration
- Nullmatic design enables fast response and precise pressure maintenance
- Weighs approximately 1.755 kg, compact for easy installation
- USA manufacture with established patent heritage
- Proven surplus stock with validated functionality
Technical Specifications
- Manufacturer: Moore Products Co.
- Model: 40H50
- Part Number: 7298-56/12LB
- Port Size: 1/4″ NPT
- Operating Pressure Range: 1–50 PSIG
- Regulator Type: Nullmatic (zero-bleed or pilot-operated design)
- Weight: ~1.755 kg
- Country of Origin: USA
- Condition: Used, fully functional
Typical Applications
The Moore 40H50 regulator is widely employed in:
- Pneumatic machinery and automation systems requiring stable inlet pressure
- Compressed air tool supply circuits
- Instrumentation air networks (where 1–50 PSIG is adequate)
- Manufacturing facility air distribution systems
- Maintenance and refurbishment of legacy pneumatic control panels
Compatibility & Replacements
Compatible With
- Standard pneumatic networks using 1/4″ NPT thread fittings
- Compressed air systems operating at 1–50 PSIG
- Moore Products pneumatic controllers and monitoring equipment
- Industrial automation systems requiring low-pressure regulation
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Alternative Moore Nullmatic regulators in the 40 series (such as 40-50, 40-30, 40-100 models) may share similar port and threading, but exact interchangeability depends on your application’s pressure and flow requirements.
Works With
- Pneumatic tools and equipment rated for 1–50 PSIG supply
- Standard compressed air networks with NPT thread connections
- Gauge and controller accessories compatible with 1/4″ NPT ports
- Existing Moore Nullmatic control systems and peripherals



