Line Pressure Regulator

Simply put, it's the "pressure gatekeeper" mounted on a gas pipeline that steps down high-pressure gas in stages to a safe level, preventing pressure differences that could damage equipment.

Features:

• Multi-stage pressure reduction: The first-stage regulator does rough pressure reduction, and the pressure regulator provides fine pressure control, making the pressure reduction smoother.
• Four-hole body options: Flexible interfaces (e.g., inlet, outlet, pressure gauge, relief port), making it easy to connect to pipelines and sensors.
• High to low pressure: It can reduce input pressure from up to 100 bar to output pressures as high as 50 bar (specific limits depend on the model).

Analogy: Think of it like the steps on a staircase. The high-pressure gas first takes a "step down" with a first-stage regulator, then gradually stabilizes with the pressure regulator to avoid the "sudden drop" of a single-stage reduction.

Core Purpose: Smooth pressure reduction + elimination of pressure differences, ideal for high-pressure gas systems.

Steps:

• Use with a first-stage regulator:

First, use a first-stage regulator to reduce the high pressure from a gas cylinder or compressor (e.g., from 200 bar to 80 bar).
Then, the pressure regulator further reduces the pressure to the final desired level (e.g., 30 bar), preventing the shock of a single-stage reduction.

• Connect to control system:

Use the four interfaces to connect pressure sensors, solenoid valves, and other components. The system can work with a PLC or controller for automatic pressure adjustment and alarm in case of abnormal conditions.

• Install in the pipeline:

It's installed directly in the gas pipeline. Make sure the interface direction is correct (the arrow indicates the gas flow direction).

• Common applications: Laboratory gas supply systems, industrial pneumatic equipment, high-pressure gas transport pipelines.

Advantages:

• Small pressure difference: Two-stage pressure reduction results in smaller pressure fluctuations and longer equipment lifespan.
• Flexible expansion: The four interfaces allow for easy integration with instruments or relief devices, enabling system upgrades.
• Safety: Prevents downstream equipment from "exploding" due to a failure in single-stage reduction.

Issue 1: The pressure fluctuates after reduction

• Cause: Unstable output from the first-stage regulator, loose spring in the pressure regulator, or fluctuating gas source pressure.
• Solution: Check the first-stage regulator setting, tighten the adjustment screw, or add a pressure stabilizing tank.

Issue 2: Gas leakage at the interfaces (especially the four-hole body)

• Cause: Worn sealing gasket or misalignment during tightening.
• Solution: Replace the sealing gasket, realign the threads, and tighten slowly.

Issue 3: Outlet pressure cannot reach 50 bar

• Cause: Insufficient input pressure, incorrect regulator model (e.g., low-pressure model selected).
• Solution: Ensure the gas source pressure is ≥100 bar, and contact the manufacturer to swap models if needed.

Issue 4: Valve jammed by debris

• Cause: Rust or oil contaminants entering the regulator from the pipeline.
• Solution: Install a filter at the inlet and regularly clean the valve.

The line pressure regulator is a "pressure soft landing station" for gas, working with a first-stage regulator and control system to ensure high-pressure gas "lands gently."
Remember: Don't exceed 100 bar for input, and keep the output pressure under 50 bar. When selecting a model, simply ask the manufacturer: "I need a 4-hole body, 100 bar in, XX bar out-can you match that?"