PTFE Needle Valve Stopcock
Product Code : EL-GS-10268
Lab Glassware Manufacturer, based in Ambala, Haryana, India, manufactures and exports the PTFE Needle Valve Stopcock, a fine-metering, 90-degree flow-control fitting used where precise, gradual adjustment of liquid or gas flow is required. Manufactured since 1982, this stopcock is supplied to research institutions, school and college laboratories, and distributors across Belgium, the Netherlands, France, and the wider Low Countries and Northern France region.
Quick answer: A PTFE needle valve stopcock uses a tapered PTFE needle to give fine, gradual control over flow rate at a 90-degree outlet, offering finer adjustment than a standard on/off key stopcock, in a bore size of 0-6mm.
| Bore Size (mm) | Angle | Key Material |
|---|---|---|
| 0-3 | 90° | PTFE |
| 0-6 | 90° | PTFE |
Manufacturer-stated dimensions — confirm before ordering.
Needle Valve vs. Standard Key: When Fine Control Matters
A conventional key stopcock is well suited to simple on/off shut-off, but a needle valve stopcock is the better choice when a laboratory procedure calls for slow, controlled dosing, such as gas flow regulation, drop-wise addition, or low-flow titration. The PTFE needle resists corrosion from aggressive gases and liquids and, unlike a ground-glass key, needs no lubricating grease. For straight-through applications without fine metering, the Straight PTFE Key Stopcock may be more appropriate.
Frequently Asked Questions
What does the 90-degree angle refer to?
The outlet is set at a right angle to the inlet, matching the standard configuration used on burettes and manifold fittings.
Which bore size should I choose?
The 0-3mm bore suits fine metering and drop-wise addition; the 0-6mm bore suits faster, higher-volume flow. Confirm your requirement with our team if unsure.
Is the needle valve resistant to acids and alkalis?
PTFE resists most common laboratory acids, alkalis, and solvents; buyers with an unusual reagent list should confirm compatibility before ordering.
Do you export to Western Europe?
Yes, Lab Glassware Manufacturer regularly exports laboratory glassware and fittings to Belgium, the Netherlands, and France, and can quote FOB or CIF terms on request.
Related Products
- Straight PTFE Key Stopcock
- PTFE Key Stopcock Burette
- PTFE Needle Valve Stopcock, Automatic Burette
- Glass Stopcocks
- Laboratory Glass Stopcocks
Request a Quote
For indicative FOB/CIF export pricing on the PTFE Needle Valve Stopcock, or to request a formal quotation, please contact us or view current tenders.
Last updated: September 2026