Pietro Fiorentini Reval 182 Regulator

The Pietro Fiorentini Reval 182 is a pilot-operated gas pressure regulator designed for medium and low pressure applications. It is a fail-close regulator that automatically shuts if the main diaphragm or pilot loop fails, helping protect systems from unsafe gas flow. Built with a top-entry modular design, the Reval 182 supports easy maintenance, retrofitting, and high-precision performance—making it ideal for industrial, commercial, and gate station use.

Whether you're handling flow fluctuations, retrofitting overpressure protection, or seeking to streamline maintenance, this regulator delivers accuracy, safety, and versatility in a compact footprint.

Key Benefits

• Fail-close design enhances safety

• Accurate regulation, even during pressure or flow fluctuations

• Allows maintenance without removing from the pipeline

• Compatible with optional integrated silencer, slam shut, or monitor

• Designed for industrial and commercial natural gas systems

Features

• Pilot-operated, spring-loaded operation

• Balanced valve plug ensures stable outlet pressure

• Top-entry design for inline maintenance

• Available in sizes 1" to 10"

• Multiple options for pilot control and preregulators

• Designed for non-corrosive, pre-filtered gas

Benefits

• Exceptional turndown ratio for varying flow conditions

• Reduced response time and lock-up pressure

• Minimal operating ΔP and low-noise configuration

• Retrofit-friendly without pipeline modification

• ANSI 150 flanged connections

Capabilities

• Outlet pressure range: 7 mbar to 12 bar (2.8” WC to 174 PSIG)

• Inlet pressure range: 0.15 to 25 bar (2.2 to 362.5 PSIG)

• Temperature range: -10°C to +60°C (extended available upon request)

• Accuracy class: up to AC 2.5

• Configurable with emergency monitor, slam-shut valve, or silencer

Construction

• Body: Cast steel or ductile iron

• Diaphragm: Rubberized canvas

• Valve seat: Steel with vulcanized rubber

• Stem: AISI 416 stainless steel

• Optional accessories: Silencer, position transmitter, stroke limiter, limit switches