Certified
ISO 9001:2015
Innovation
90+ U.S. Patents
Worldwide
Global Support
Experts
Since 1954
Certified
ISO 9001:2015
Innovation
90+ U.S. Patents
Worldwide
Global Support
Experts
Since 1954
Precise flow control and positive shutoff for high-pressure instrumentation
The Welker NV-1 Needle Valve is designed for precise flow metering and positive shutoff in power plants, refineries, chemical plants, oil and gas exploration sites, laboratories, and high-pressure instrumentation systems. Built with a soft seat design, low operating torque, globe-style porting, blowout-proof stem, and durable 316 stainless steel construction, the NV-1 provides dependable flow control with leak protection and easy operation under pressure. Rated for high-pressure service, the NV-1 supports sampling, conditioning, and instrumentation applications where reliable valve performance is critical.
Precise Instrument Flow Metering
Power plants, refineries, chemical plants, oil and gas exploration sites, and laboratories requiring precise flow control.
Resources
Soft Seat Design
Provides positive shutoff to help prevent unwanted leakage.
Low Operating Torque
Allows the valve to open and close more easily under pressure.
Globe-Style Porting
Supports precise flow metering and reduces leak potential.
Blowout-Proof Stem
Improves safe operation in high-pressure applications.
Durable Construction
Provides long-term leak protection and instrumentation reliability.
