Product Overview
The Parker 4A-V4LR-SS is a precision instrumentation needle valve engineered for fine flow control and reliable isolation in high-purity and demanding process systems. Manufactured by Parker Hannifin, a global leader in motion and control technologies, this valve utilizes a threaded stem and tapered needle design that seats against a matching orifice to deliver accurate, repeatable throttling and bubble-tight shutoff. Constructed from 316 stainless steel, the 4A-V4LR-SS is designed for use in analytical instrumentation, process sampling, and pneumatic control circuits where precise metering and leak-free performance are critical. As a manual, multi-turn valve, it provides operators with sensitive adjustment capability for low-flow regulation across a wide range of industrial and laboratory applications.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Instrumentation Needle Valve (Manual, Multi-Turn) |
| Model Designation | 4A-V4LR-SS |
| Body Material | 316 Stainless Steel |
| Operating Pressure | Standard Industrial Grade (Up to rated bar per Parker instrumentation series) |
| Mounting & Connection | Standard ISO / Parker Instrumentation Interface |
| Flow Control Method | Tapered Needle / Threaded Stem, Multi-Turn |
| Sealing Principle | Metal-to-Metal Needle Seat for Bubble-Tight Shutoff |
Engineering Features & Advantages
- Precision Performance: The tapered needle and threaded stem deliver fine, repeatable flow metering, enabling accurate throttling and isolation in low-flow instrumentation circuits.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a 316 stainless steel body offering excellent corrosion resistance and long service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without system modification.
- Bubble-Tight Shutoff: Metal-to-metal seating design provides dependable sealing for critical isolation and sampling duties.
- Manual Multi-Turn Actuation: Allows sensitive operator adjustment for precise control of process and pneumatic flows.
Typical Industrial Applications
The Parker 4A-V4LR-SS instrumentation needle valve is widely used in analytical and process sampling systems, chemical and petrochemical pilot plants, pneumatic control panels, and high-purity gas or liquid handling circuits. It is also commonly found in oil and gas instrumentation, pharmaceutical process lines, and research laboratory test rigs where accurate flow regulation and leak-free isolation are essential.
PRODUCT IMAGES
PARKER 4A-V4LR-SS Instrumentation Needle Valve
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine PARKER 4A-V4LR-SS Stainless Steel Solenoid Directional Valve. This USA-made 24V DC hydraulic component features a 4-way, 2-position spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.