Metering needle valve
Specifications
| Item number: | Dim. | Inlet | tMin. | tMax. | Max. Pressure | Material | Flow range (*) | Kv-value | Outlet |
|---|---|---|---|---|---|---|---|---|---|
| 1000-602 | 1/4" | 1/4" NPTF | -20°C | 180°C | 140 bar | 6Mo | 3 to 8 L/hour | 0,0017 to 0,0046 | 1/4" NPTF |
| 1000-603 | 1/4" | 1/4" NPTF | -20°C | 180°C | 140 bar | 6Mo | 3 to 27 L/hour | 0,0017 to 0,0156 | 1/4" NPTF |
| 1000-604 | 1/4" | 1/4" NPTF | -20°C | 180°C | 140 bar | 6Mo | 15 to 38 L/hour | 0,0087 to 0,0219 | 1/4" NPTF |
About the product
Characteristics:
EV Metals new product line of metering needle valves for multiple applications.
For all valves apply a high linearity and characteristic.
Our valves are available as straight and angle types and are manually operated as standard, but can easily be equipped and supplied with either a pneumatic or electrical actuator.
Our valves are as standard with threaded inlet and outlet ports in the dimension ¼” female NPT, but other connections can be supplied up on request.
Our valves are intended as regulating/metering valves in systems with high pressure fluids. Valves with a very little flowrate are by purpose not designed to entirely shut off the flow. They will always stay a little bit open. The reason is that a completely shut off will damage the thin needle.
Designed to operate in corrosive environments, with valve body in high alloy austenitic stainless steel type 6Mo (1.4547).
Other dimensions and materials available on request.
Mounting:
The valves can be panel mounted or mounted using the mounting holes in the valve body. The valves can be mounted in any direction.
(*) Flow range measured at 3 bar pressure drop with water at 20°C.
The primary applications of a metering valve include:
1. Chemical Dosing & Injection
Operators use these valves to manually adjust the injection of critical chemicals into production lines. This includes: LinkedIn
Corrosion Inhibitors: Protecting subsea and topside piping from seawater and acidic fluids.
Flow Assurance: Injecting methanol or monoethylene glycol (MEG) to prevent hydrate formation (ice-like plugs) in deepwater lines.
Anti-Fouling: Adding agents to cooling water systems to prevent biological growth.
2. Gas Lift Operations
Manual metering valves are frequently used on gas lift manifolds to precisely control the amount of high-pressure gas injected into a well to assist in lifting oil to the surface.
3. Sampling & Instrumentation
They are essential for Gas and Liquid Sampling Systems, where a small, steady flow is required for analyzers to provide accurate data on fluid composition without causing sudden pressure drops.
4. Specialized Process Control
Choke Function: In low-pressure-drop scenarios, they can act as a fixed choke to maintain constant production rates.
Sand Drains: Used on separation vessels to manually offload accumulated sand from the bottom of the tank.
Lubrication Lines: Ensuring a constant, precise film of oil for large rotating equipment like compressors or turbines.
5. Why "Manual" is Preferred
While offshore platforms are highly automated, manual versions are used for their simplicity and reliability. They do not require electrical power, making them ideal for initial setups, periodic adjustments, or as a failsafe in remote locations