Fisher EZR Pressure Reducing Regulator
High-Capacity Pilot-Operated Pressure Control for Natural Gas Distribution
The Fisher EZR is a pilot-operated, pressure-reducing regulator designed for high-pressure natural gas applications. Compliant with ASME and ANSI standards, this robust regulator delivers exceptional performance in long-distance pipeline pressure reduction, city gate stations, skid-mounted systems, LNG facilities, and CNG operations worldwide.
Konfiguratsiya parametrlari
The EZR regulator offers flexible configuration packages to meet specific application requirements:
✓ Standard Configuration
- 252 Filter
- Type 112 Restrictor
- Pilot (161EB/161AY series)
- Travel Indicator
- WCC Carbon Steel Body
✓ Simple Configuration
- Type 112 Restrictor
- Pilot (161EB/161AY series)
- WCC Carbon Steel Body
Customers can select the optimal configuration based on operational needs.
Texnik xususiyatlar
Oqim hajmi
The EZR is a full-open type pressure reducing regulator with maximum flow capacity up to 200,000 Nm³/h, making it ideal for high-volume natural gas distribution systems.
Available Pilot Options
The Baliqchi EZR regulator can be equipped with various pilot models to achieve precise outlet pressure control:
161AYM
161EB (Most Common)
161EBM
PRX-120
PRX-12/AP
The pilot is the critical component that regulates and maintains the desired outlet pressure.
161EB/161EBM Pilot Pressure Ranges
Operating Principle
The Fisher EZR regulator operates on a pilot-operated balanced valve principle, providing precise pressure control through the following mechanism:
Closed Position (Normal State)
When the outlet (control) pressure is at or above the setpoint, the pilot plug or disk remains closed. Inlet pressure flows through the Type 112 restrictor (integrated in PRX series pilots) and combines with the main spring force to create downward loading pressure. This loading pressure keeps the main valve diaphragm and plug assembly tightly sealed against the seat.
Opening Cycle
When downstream demand causes the outlet pressure to drop below the pilot setpoint, the pilot plug or disk assembly opens. Loading pressure vents to downstream faster than it can be replenished through the restrictor, causing the loading pressure above the main diaphragm to decrease. The resulting pressure imbalance allows inlet pressure to overcome the loading pressure and main spring force, lifting the EZR diaphragm and plug assembly to open the flow path.
Closing Cycle
As outlet pressure rises toward the setpoint, pressure acting on the pilot diaphragm compresses the pilot spring, causing the pilot plug or disk to close. Loading pressure above the EZR diaphragm and plug assembly begins to increase. The combined force of loading pressure and the main spring pushes the diaphragm and plug assembly back onto the tapered seat, achieving tight shutoff.
Odatdagi ilovalar
Long-Distance Pipelines
Pressure reduction for transmission lines
City Gate Stations
Distribution network pressure control
Skid-Mounted Systems
Compact pressure regulation units
LNG Facilities
Cryogenic gas pressure management
CNG Stations
Compressed natural gas dispensing
Key Benefits
- High Capacity: Full-open design delivers up to 200,000 Nm³/h flow rate
- Precise Control: Pilot-operated mechanism ensures accurate outlet pressure maintenance
- ASME/ANSI Compliance: Meets international standards for safety and reliability
- Flexible Configuration: Standard or simple packages to match application needs
- Wide Pressure Range: Multiple pilot options cover 0.34 to 24.1 bar outlet pressure
- Proven Performance: Trusted by operators worldwide for critical pressure control
Supplying Genuine Fisher EZR Regulators
Xi’an Yunrui Trading Co., Ltd. supplies original Fisher EZR pressure reducing regulators and replacement parts. We provide technical consultation to help you select the optimal configuration for your specific application requirements.
Contact: sales@yunrui-controls.com | WhatsApp: 18710784030
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