Instrumentation Valves
National Hose & Accessory – Instrumentation Valves for Precise Flow Control & Isolation
National Hose & Accessory offers a complete line of instrumentation valves designed for precise control, shutoff, and metering in critical systems. Available in needle, ball, check, and metering configurations, these valves are engineered for high-pressure, high-temperature performance in chemical, laboratory, and process applications.
Manufactured from stainless steel and corrosion-resistant materials, our instrumentation valves ensure leak-tight operation and long-term durability. Each valve is precision-machined for smooth actuation, allowing accurate flow control even under fluctuating pressure conditions.
With local Houston inventory and technical expertise, National Hose & Accessory supports refineries, chemical plants, and analytical facilities across the Gulf Coast with dependable flow-control components.
Value Added Advantage:
High-pressure valves for instrumentation and process systems
Needle, ball, check, and metering designs available
Durable stainless construction for temperature and chemical exposure
Expert assistance for valve sizing and application matching
Trust National Hose & Accessory—your Houston supplier for precision instrumentation valves designed for reliability and control in critical operations.




























