Overview
The Parker 4Z-V4LN-SS is a compact, precision needle valve from Parker’s V Series, engineered for positive leak-tight shut-off and flow regulation in instrumentation and general-purpose applications. This model features 316 stainless steel construction, making it ideal for corrosive environments and demanding process or power applications up to 5,000 PSI.
Key Features
- 316 Stainless Steel body — superior corrosion resistance and durability in harsh conditions
- Needle stem with hard seat and integral hard seat design — ensures reliable, repeatable shut-off across pressure cycles
- PTFE stem packing — minimizes friction and provides excellent chemical compatibility
- 5000 PSI pressure rating — suitable for high-pressure instrumentation lines and control systems
- 1/4-inch single ferrule CPI compression ports — standard tubing connection, inline identical ends for flexible installation
Technical Specifications
The valve operates across a temperature range of −65°F to 450°F (−54°C to 232°C), supporting both cryogenic and high-temperature fluid/gas applications. The compact inline configuration minimizes footprint and simplifies panel or manifold integration.
Typical Applications
- Laboratory and analytical instrumentation systems
- Pressure gauges and transducers isolation
- Process control and monitoring loops
- Power and hydraulic system trim valves
- Gas regulation and metering for specialized processes
Compatibility & Replacements
Compatible With
- 1/4-inch CPI (Parker Hannifin Compression Port Index) tubing systems
- Single ferrule compression tube fittings
- Instrumentation manifolds with 1/4-inch cavity ports
- Hydraulic and pneumatic process loops up to 5000 PSI
Replaces / Drop-In Replacement For
- SS-1RS4 (verified cross-reference)
Works With
- Standard 1/4-inch compression tube unions, tees, and fittings
- Pressure gauge isolation blocks and gauge manifolds
- Control valve stacks and process instrumentation assemblies
