VT PTFE needle valves

PTFE contact, metal shell, one o-ring, 55 SLPM air/2.8 LPM water.

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Description
Specifications
Standard valve
High-Resolution Valve

These 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. Pliant 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. 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.

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.


Maximum pressure	5.2 bar(g)
Maximum temperature	65°C
Orifice size	1/8″ (3.175 mm)
Materials in contact with the fluid	Body and O-ring : PTFE Valve spindle : PCTFE
Non fluid contacting	Shell : Aluminum (anodized) or 316 stainless steel.

Standard valve

Part Number	Maximum Flow AIR (mL/min)	Maximum Flow WATER (mL/min)	CV	Non Wetted Materials Shell	Non Wetted Materials Bushing	Connections
VCL-TT-0A	2400	130	0.011	Aluminum	Brass	1/8″ FNPT
VCH-TT-0A	55000	2800	0.250	Aluminum	Brass	1/8″ FNPT
VCL-TT-0F	2400	130	0.011	Aluminum	Brass	1/4″ Comp.
VCH-TT-0F	55000	2800	0.250	Aluminum	Brass	1/4″ Comp.
VCL-TT-0G	2400	130	0.011	Aluminum	Brass	0.390 O.D. Glass Nipples
VCH-TT-0G	55000	2800	0.250	Aluminum	Brass	0.390 O.D. Glass Nipples
VCL-TT-2A	2400	130	0.011	Stainless	Stainless	1/8″ FNPT
VCH-TT-2A	55000	2800	0.250	Stainless	Stainless	1/8″ FNPT
VCL-TT-2F	2400	130	0.011	Stainless	Stainless	1/4″ Comp.
VCH-TT-2F	55000	2800	0.250	Stainless	Stainless	1/4″ Comp.
VCL-TT-2G	2400	130	0.011	Stainless	Stainless	0.390 O.D. Glass Nipples
VCH-TT-2G	55000	2800	0.250	Stainless	Stainless	0.390 O.D. Glass Nipples

Hight-Resolution Valve

Part Number	Maximum Flow (mL/min) AIR	Maximum Flow (mL/min) WATER	CV	Connections
VM1-TT-0A	600	36	0.003	1/8″ FNPT
VM3-TT-0A	3000	180	0.015	1/8″ FNPT
VM6-TT-0A	30000	1800	0.150	1/8″ FNPT
VM1-TT-0F	600	36	0.003	1/4″ Comp.
VM3-TT-0F	3000	180	0.015	1/4″ Comp.
VM6-TT-0F	30000	1800	0.150	1/4″ Comp.
VM1-TT-0G	600	36	0.003	0.390 O.D. Glass Nipples
VM3-TT-0G	3000	180	0.015	0.390 O.D. Glass Nipples
VM6-TT-0G	30000	1800	0.150	0.390 O.D. Glass Nipples