ホームニュース Fisher EZR Pressure Reducing Regulator: Technical Specifications and Applications

Fisher EZR Pressure Reducing Regulator: Technical Specifications and Applications

Fisher EZR Pressure Reducing Regulator

High-Capacity Pilot-Operated Pressure Control for Natural Gas Distribution

の フィッシャー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.

設定オプション

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.

技術仕様

体格	本体材質	接続終了	圧力定格
1″, 2″, 3″, 4″, 6″, 8″	WCC	CL150 RF	20 bar
		CL300 RF	50 bar
		CL600 RF	102 bar

流量容量

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

のフィッシャー EZR regulator can be equipped with various pilot models to achieve precise outlet pressure control:

161AY
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

パイロットの種類	Outlet Pressure (psig)	Outlet Pressure (bar)
161EB or 161EBM	5 to 15	0.34 to 1.0
	10 to 40	0.69 to 2.8
	30 to 75	2.1 to 5.2
	70 to 140	4.8 to 9.7
	130 to 200	9.0 to 13.8
	200 to 350	13.8 to 24.1

Operating Principle

のフィッシャー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.

代表的な用途

🛢️

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