For more than 80 years, Pietro Fiorentini Fiorentini (PF) has led the way in energy regulation with a commitment to safety, precision, and sustainability. The company’s FE regulators continue that legacy, offering innovative solutions that help you meet modern energy challenges while reducing emissions. Designed for both residential and commercial applications, these regulators combine advanced engineering with environmental responsibility. Their SafeGate™ Technology, installation versatility, and two-stage pressure regulation system work together to deliver reliable performance, operational safety, and measurable reductions in environmental impact.
Emission Reduction and Hydrogen Readiness
PF’s FE regulators are built to help you reduce emissions and prepare your system for the energy transition ahead. Each unit features advanced sealing mechanisms and precise pressure control that minimize the risk of gas escaping into the atmosphere. Many models are also hydrogen-ready, supporting the use of hydrogen as a cleaner, more sustainable fuel. This capability not only enhances your operational safety and lowers greenhouse gas emissions but also keeps you in step with evolving environmental regulations. With this forward-looking design, PF regulators help you move confidently toward a safer and more sustainable energy future.
SafeGate™ Technology: Dual Protection and Peace of Mind
At the core of each FE regulator is PF’s innovative SafeGate™ Technology, designed to protect your system from both over-pressure and under-pressure conditions. A double main diaphragm provides redundancy, ensuring continuous operation even if one diaphragm fails. An integrated vent limiter controls gas flow in the event of a failure, while a slam-shut valve automatically stops gas flow if pressure rises above or falls below safe levels. Together, these features deliver a powerful layer of protection, helping you maintain reliable performance and peace of mind.
Flexible Installation for Challenging Meter Setups
FE regulators are designed to make installation easier, even in tight or abnormal conditions. Each unit meets the latest NFPA 54 standard, which requires a 3-foot clearance from windows, doors, and ignition sources, making it suitable for both indoor and outdoor use. The compact design and multiple connection configurations give you greater flexibility during setup. With these features, you can meet safety standards, simplify installation, and reduce the risk of costly site adjustments.
The Advantages of Two-Stage Pressure Regulation
PF’s two-stage pressure reduction system gives you superior safety, precision, and reliability.
- Safety: If the second stage fails, the first stage continues to regulate pressure. A built-in over-pressure shut-off device provides additional protection.
- Accuracy: The balanced first-stage design minimizes pressure variations before they reach the second stage, ensuring consistent and highly accurate outlet pressure.
This advanced design enables you to maintain consistent gas flow and dependable system performance across a wide range of conditions.
FE Regulator Models
The FE models offer both lever-operated and spring-loaded options, designed for use in residential and commercial applications.
Model | Normal Capacity | Size | Type |
| FE 25 | 875 CFH | ¾'' x 1'' | Lever Operated |
| FE 50 | 1,500 CFH | ¾'' x 1'' | Lever Operated |
| FE 75 | 2,600 CFH | 1'' x 1-1/2 ‘’ | Spring Loaded |
| FE 100 | 3,500 CFH | 1'' x 1-1/2 ‘’ | Spring Loaded |
FE Competitive Advantages
- Operates with low differential pressure
- Slam-shut protection for over-pressure and under-pressure
- Two-stage system with double diaphragms and single orifice regulator
- Suitable for 1-foot clearance installations with 2.5 cf/h limited venting
- Optional built-in thermal valve
- Built-in strainer for seat protection
- Optional built-in excess flow valve
- Compatible with biomethane and up to 20% hydrogen blending (higher blending available)
- Highly customizable to meet your specific needs
Pietro Fiorentini’s FE regulators help you turn complex compliance requirements into confidence. With hydrogen-ready construction, low-emission performance, SafeGate™ protection, and flexible installation options, these regulators are built to keep your operations safe, efficient, and sustainable. Whether you need precision control, advanced safety, or future-ready adaptability, the FE regulators deliver dependable results. To find the right regulator for your system, contact GROEBNER’s sales team at 800-638-8322 or fill out the form here.