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Built for precise flow metering, this aluminum needle valve provides a 0.25 Cv flow coefficient through a 1/8" female NPT port and a 6-turn metering stem. It handles up to 55,000 ml/min of air and 2800 ml/min of water, rated for pressures to 75 psi (5.2 bar) and temperatures to 65°C (150°F). Its resin knob and PTFE/CTFE seals suit gas and liquid line control.
Built for precise flow metering, this aluminum needle valve provides a 0.25 Cv flow coefficient through a 1/8" female NPT port and a 6-turn metering stem. It handles up to 55,000 ml/min of air and 2800 ml/min of water, rated for pressures to 75 psi (5.2 bar) and temperatures to 65°C (150°F). Its resin knob and PTFE/CTFE seals suit gas and liquid line control.
The FVLT100 Series compact and reliable PTFE needle valves are designed for laboratory and industrial applications for regulating corrosive gases and liquids or for high purity service. They may also be used as shut off valves.
PTFE bodies of the valves are reinforced by structurally rigid metallic shells. Fluids contact only PTFE and CTFE materials. Shells are made of anodized aluminum or type 316 stainless steel and bushings are made of plated brass or 316 stainless steel.
Where externally corrosive conditions exist stainless steel is recommended. Valve spindles are made of rigid CTFE to minimize the undesirable material “creeping” normally associated with PTFE.
The FVLT100 Series PTFE valves are designed for relatively high flow ranges while still performing well in low flow rates. Valves may be used in pressure or non-critical vacuum service.
The simplicity of design—there are only seven components (including a single PTFE O-ring)—assures reliability and minimizes sources of leakage. It takes seconds to disassemble the valve for cleaning and maintenance.
The PTFE O-ring is radially compressed and due to this unique design feature the degree of compression may be adjusted without disassembly by tightening the hexagonal bushing.
Features
Applications
| Maximum pressure | 75 psig (517 kPa) |
| Maximum temperature | 150°F (65°C) |
| Orifice size | 0.125" (3.175 mm) dia. |
| Materials of construction, fluid contacting | Body and O-ring - PTFE. Valve spindle - CTFE |
| Maximum flow, air | 55000 ml/min |
| Maximum flow, water | 2800 ml/min |
| Cv | 0.250 |
| Connections | 1/8 FNPT |
| Non-wetted materials | Aluminum/Brass |
| Materials of construction, non fluid contacting | Shell - Aluminum (anodized) or 316 stainless steel. Bushing - plated brass, or 316 stainless steel. Adjusting Knob - phenolic |
| Number of turns to fully open | 6 |
| Maximum pressure | 75 psig (517 kPa) |
| Maximum temperature | 150°F (65°C) |
| Orifice size | 0.125" (3.175 mm) dia. |
| Materials of construction, fluid contacting | Body and O-ring - PTFE. Valve spindle - CTFE |
| Maximum flow, air | 55000 ml/min |
| Maximum flow, water | 2800 ml/min |
| Cv | 0.250 |
| Connections | 1/8 FNPT |
| Non-wetted materials | Aluminum/Brass |
| Materials of construction, non fluid contacting | Shell - Aluminum (anodized) or 316 stainless steel. Bushing - plated brass, or 316 stainless steel. Adjusting Knob - phenolic |
| Number of turns to fully open | 6 |
