Flow Control Valves ZNV08

Flow Control Valves ZNV08

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

I. Model Naming Logic (Inferred)

1. ZNV Series Designation

• Zmay represent "Flow Control" or a specific brand/product line code.

• NVlikely indicates "Needle Valve" or "Variable Valve," commonly used in applications requiring precise flow adjustment.

• Numeric suffixes (08/10/12)typically correspond to the valve's nominal bore size (e.g., DN8, DN10, DN12) or flow coefficient (Cv value). For example:

• ZNV08: Suitable for low-flow applications (e.g., Cv ≈ 0.1–0.5) with a 8mm bore.

• ZNV10/ZNV12: Larger bore sizes for increased flow ranges (e.g., Cv ≈ 0.5–1.5).

2. Application Context

• If designed for hydraulic systems, these valves may control the speed of actuators (e.g., cylinders, motors).

• If for pneumatic systems, they may regulate cylinder speed or gas flow distribution.

II. Core Functions and Design Features

1. Flow Adjustment Capability

• Flow is adjusted continuously by rotating the valve core to modify the throttle orifice area.

• May include a locking mechanism to prevent unintended valve core movement after adjustment.

2. Pressure Compensation Design (Optional)

• Some models may integrate a pressure compensator to maintain consistent flow despite load pressure fluctuations (e.g., Danfoss pressure-compensated flow valves).

• Ideal for multi-actuator parallel systems requiring synchronized motion (e.g., injection molding machine clamping units).

3. Sealing and Pressure Resistance

• Sealing materials may include NBR (nitrile rubber) or FKM (fluororubber) for compatibility with mineral oils, water-based hydraulic fluids, etc.

• Rated pressure may reach 210 bar (3000 psi) or higher, depending on the application.

4. Installation and Interface Options

• Threaded connections (e.g., G1/8, G1/4) or flange mounts for easy integration into pipelines or valve blocks.

• Some models support stackable installation to save space and simplify piping.

III. Typical Applications

1. Hydraulic Systems

• Control cylinder speed (e.g., machine tool feed, die-casting machine clamping/unclamping).

• Regulate hydraulic motor rotational speed (e.g., construction equipment slewing drives).

2. Pneumatic Systems

• Control cylinder stroke speed (e.g., automated assembly line grippers).

• Adjust gas flow distribution (e.g., pneumatic tool air supply).

3. Industrial Automation

• Enable closed-loop flow control when paired with sensors and controllers (e.g., tension control systems).

• Used in analog load testing (e.g., valve performance test benches).

IV. Selection Guidelines

1. Define Flow Requirements

• Select valve bore size and Cv value based on the system's maximum and minimum flow demands.

• Example: For a flow range of 0.5–5 L/min, ZNV10 (assuming Cv ≈ 0.8) may be suitable.

2. Verify Pressure Rating

• Ensure the valve's rated pressure exceeds the system's maximum operating pressure (e.g., choose ≥210 bar for a 160 bar system).

3. Check Media Compatibility

• Select sealing materials and valve body materials based on the working medium (e.g., stainless steel + FKM for corrosive fluids).

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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Address: Ningbo, China

Main Product: hydraulic motor, gear box , hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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