Materials of Construction (MOC)
| Component | Material Specification |
|---|---|
| Body & Bonnet | Stainless Steel (ASTM A351 Gr. CF8/CF8M) |
| Stem / Spindle | SS 304 / SS 316 |
| Seat / Trim | PTFE / RPTFE / Integral |
Technical Specifications
| Parameter | Specification / Standard |
|---|---|
| Manufacturing / Design Standard | ASME B16.34 / API 603 / API 6D |
| Testing Standard | API 598 / EN 12266-1 |
| Pressure Rating | Class 150 to Class 600 / PN16 / PN40 |
Features & Benefits
Precision Tapered Needle
Long tapered needle with precision-ground seating surface provides fine flow control with high rangeability (up to 100:1), enabling accurate adjustment of instrument bleed, sample flow, and pilot operation.
Bubble-Tight Metal Seat
Precision-lapped metal-to-metal seat (SS316 + Stellite) achieves API 598 Class A zero visible leakage without soft seats, making the valve suitable for high-temperature and oxygen service.
Compact Forged Barstock Body
One-piece forged barstock body eliminates cast porosity and weld seams, providing uniform wall thickness and pressure containment up to 10,000 psi in a compact envelope.
Panel Mount Configuration
Round or square body with panel mount nut allows secure installation through instrument panels, control cabinets, and analyser enclosures without additional brackets.
Anti-Galling Needle Tip
Stellite 6 or chrome-plated needle tip prevents galling and seizing in high-cycle instrument isolation service, extending valve life in applications with frequent open/close operations.
Multiple End Connection Options
NPT/BSP threaded, socket weld, butt weld, tube compression, and flanged ends available in the same body pattern, simplifying installation in mixed-connection instrument tubing systems.