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Series-MPR
Miniature Pressure Regulator for Air/Water – High Performance, Locking
- Compact zinc-body design supports up to 250 psig supply and 24 SCFM flow — ideal for air or water systems
- Smooth, low-torque non-rising adjustment knob with built-in locking mechanism for precise, stable output pressure
- Two ¼″ FNPT inlet/outlet ports plus two ⅛″ FNPT gauge ports—ready for panel-mount or inline installation
- Lightweight (≈4 oz) and compact footprint for OEM or portable equipment where space and cost matter
Product Overview
- Applications Fluid Measurement and Control
- Flow Capacity Note 24 SCFM (48 m3/hr) at 100 psig (6.9 bar) supply, 60 psig (4.1 bar) output.
- Operating Temperature, Max 150 °F
- Operating Temperature, Min 0 °F
- Port 1 Size 1/4 in
- Port 1 Type NPT Female
- Port 2 Size 1/8 in
- Port 2 Type NPT Female
- Measurement Pressure, Min 0 psi
- Measurement Pressure Type Gauge
- Process Connection Note Inlet and outlet: Two 1/4˝ female NPT; Two 1/8˝ female NPT gage ports
- Proof Pressure Up to 250 psi
- Series ID Series-MPR
- Volumetric Flow Rate, Max 24 SCFM
- Weight 4 oz
Supported Applications
The Dwyer Series MPR Miniature Pressure Regulators provide high-performance pressure regulation for compressed air and water. The compact, lightweight design supports OEM markets and portable equipment applications including adhesive dispensers, printing presses, medical equipment, spray equipment, analyzers, pumps, compressors, welding machines, and similar industrial uses.
Model MPR1 is a relieving regulator intended for constant flow or downstream pressure relief air applications. Model MPR2 is a non-relieving regulator typically used in water applications where excess downstream pressure does not vent to atmosphere.
Operating Conditions & Performance
The Series MPR operates within temperature limits of 0 to 150°F (-18 to 60°C). The maximum supply pressure is rated at 250 psig (17.2 bar).
Available measurement ranges include:
- 0 to 5 psi
- 0 to 15 psi
- 0 to 30 psi
- 0 to 60 psi
- 0 to 100 psi
The flow capacity is specified as 24 SCFM (48 m³/hr) at a supply of 100 psig (6.9 bar) and an output of 60 psig (4.1 bar). The unit weighs 4 oz (113 g).
Configuration Options
The series offers configurable pressure ranges via specific model numbers, with distinct configurations for air-only versus air/water service.
- Housing and Adjustment: Features a low torque, non-rising adjustment knob with locking capability to prevent leakage. The housing material is Zinc Alloy (Body) with Acetal Bonnet components.
- Process Connections: Inlet and outlet utilize Two 1/4" female NPT connections; gauge ports are provided as Two 1/8" female NPT.
- Wetted Materials: The body is Zinc, the bonnet is Acetal, diaphragm/seals are Nitrile. Internals include Aluminum, brass, acetal, steel, and music wire. Model MPR2 internals are plated with electroless nickel for water use.
- Accessories: Optional mounting hardware includes Mounting bracket (MPR-B) and Panel mounting nut (MPR-N).
Key Product Differences
The Series MPR distinguishes between two primary model families based on relief behavior and media compatibility.
- Model MPR1: Self-relieving models designed for compressed air. Excess pressure is vented out of the regulator when downstream pressure exceeds the setting, though relief capacity is limited.
- Model MPR2: Non-relieving models designed for air/water applications. Downstream pressure above the setting does not relieve to atmosphere; an external means of relieving pressure must be provided if necessary.
Both model families share identical range options (0-5, 0-15, 0-30, 0-60, and 0-100 psi) but differ in internal plating to accommodate water service. The Series MPR is not field serviceable; repair requires return authorization from the factory.
PDFs & Manuals
