Overview
The Clippard MAR-1 miniature pressure regulator is a single-stage, spring-loaded pressure control valve engineered for pneumatic systems requiring accurate, reliable regulation in a compact footprint. Introduced by Clippard in 1962, the MAR-1 became very popular as a simple, robust, and cost-effective regulator in a small package with exceptionally long life. This standard variant features #10-32 threaded ports and a knurled adjustment knob for manual pressure setting.
Key Features
- Compact Miniature Design: Ideal for space-constrained applications and portable equipment.
- Simple, Robust Construction: Simple, robust, and cost-effective in a small package with exceptionally long life.
- Manual Knurled Adjustment: Convenient field adjustment with knurled knob for easy pressure setting.
- #10-32 Threaded Ports: Standard thread configuration for widespread compatibility with existing pneumatic systems.
- Relieving Type: The relieving regulator will maintain a constant pressure output even if there is a change in the downstream condition.
- Material Options: Both types are offered in either a brass or stainless steel alloy and have a maximum inlet pressure of 300 psig.
Technical Specifications
- Port Configuration: #10-32 inlet and outlet threads
- Pressure Range: 10–100 psig output (adjustable)
- Maximum Inlet Pressure: 300 psig
- Adjustment Type: Knurled knob (manual)
- Medium: Compressed air
- Body Material: Brass (standard) or stainless steel
- Seals: Buna-N
- Stem & Spring: Stainless steel
- Air Flow: 3 scfm @ 50 psig; 5 scfm @ 100 psig; 120 l/min.
- Body Height: Approximately 2.046 inches (52.0 mm)
- Body Diameter: Approximately 1.000 inch (25.4 mm)
- Regulation Type: Relieving (vent to atmosphere for constant output pressure)
Typical Applications
The MAR-1 is suited for pneumatic systems across multiple industries:
- Laboratory automation and test equipment
- Medical device control systems
- Pneumatic tool pressure regulation
- Process control and instrumentation
- Portable air-operated equipment
- Pump and plumbing systems requiring pressure limiting
Compatibility & Replacements
Compatible With
- Any pneumatic system using #10-32 SAE thread ports
- Standard compressed air networks (0–300 psig inlet)
- Applications requiring 10–100 psig outlet pressure control
- Manual pressure adjustment systems
Replaces / Drop-In Replacement For
- Previous MAR-1 units (original design 1962–present)
- Equivalent Clippard MAR-series regulators with #10-32 ports and knurled adjustment
- Other miniature brass regulators with matching port threads and pressure range
Works With
- Pneumatic tubing and hose fittings (SAE #10-32 compatible)
- Standard air compressors and pneumatic power sources
- Pressure gauges and diagnostic instruments
- Industrial automation control systems
