Angle pattern micro flow control needle valve

Detailed Product Introduction

The series right-angle instrumentation-grade metering needle valve is designed for systems requiring highly meticulous flow regulation and reliable bubble-tight isolation. Machined from premium bar-stock stainless steel, this space-saving angle-pattern valve changes fluid direction by 90 degrees, making it ideal for compact panel installations and complex manifold setups. The outstanding feature is its upper knurled adjustment handle, which incorporates permanently laser-etched graduation marks to facilitate precise, repeatable manual flow settings. Equipped with a specially hardened, fine-threaded micro-taper stem, it prevents galling and guarantees linear flow adjustment. This precision valve is widely used in analyzer sampling systems, gas chromatography calibration lines, chemical injection skids, and high-purity laboratory distribution networks.

Technical Specifications

• Valve Mechanism: Precision Fine-Thread Micro-Metering Needle Valve

• Body Flow Pattern: Right-Angle Pattern (90-Degree Flow Orientation)

• Primary Body Material: High-Density Forged Stainless Steel 316 (SS316) / SS304

• Stem Design: Hardened Stainless Steel stem with fine-pitch threads for linear throttling

• Handle Mechanism: Metal knurled knob with laser-etched numerical graduation scales (e.g., 2, 4, 6)

• Stem Packing System: Adjustable PTFE standard / Optional dynamic Graphite packing for elevated thermal tasks

• Connection Ends: Double Ferrule Compression (Card Sleeve End) or Female/Male NPT threads

• Available Port Sizes: 1/8", 1/4", 3/8", and 1/2" (Metric 6mm to 12mm tube fitting options)

• Maximum Working Pressure: Engineered up to 3000 PSI / 6000 PSI (206 to 413 Bar) instrument tier

• Flow Coefficient Range: Ultra-low Cv profiles ranging from 0.004 to 0.15 for meticulous flow control

• Leakage Sealing Standard: Rate A per EN 12266-1 / Exceeds ANSI Class VI ensuring zero bubble leakage

• Operating Temperature Range: Resistant from -40°C up to +204°C with standard soft PTFE packing

• Orifice Seating Configuration: Metal-to-metal integrated body seat configuration preventing deformation

• Stem Protection: Integrated safety back-sealing design stops stem blowout under full system load

• Applicable Process Media: Analytical gases, chromatography standards, hydraulic fluids, nitrogen, and pure water

• Panel Mount Capability: Optional integrated panel-mounting nut for convenient control box layouts

• Internal Fluid Velocity: Optimized angular internal path minimizes fluid turbulence and acoustic cavitation

• Testing Protocol: 100% factory verified through pneumatic nitrogen seat and shell pressure hold procedures

• Surface Finishes: Electropolished internal pathways with fine-brushed matte metallic exterior finish

• Cleanliness Treatment: Oxygen cleaning available, capped with protective vinyl caps, and sealed individually