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Stopcocks, Glass Key, Straight Through

Stopcocks, Glass Key, Straight Through

Product Code : JA-SCSAS-1657

Stopcocks, Glass Key, Straight Through (product code JA-SCSAS-1657) are all-glass valves for controlling flow in laboratory apparatus. A glass key stopcock has a ground glass key turning in a glass barrel, with a bore that passes straight through to open or close a single line. They are listed in five bore sizes, 2 mm to 10 mm, for laboratories and glassblowing workshops that build, modify or repair glass apparatus.

Specifications

These stopcocks have a glass key and a straight-through bore, listed in five bore sizes from 2 mm to 10 mm. A glass key is normally used with a thin film of stopcock grease so that it turns smoothly and seals.

ProductStopcocks, Glass Key, Straight Through
SKU / Product codeJA-SCSAS-1657
TypeStopcock, straight through
KeyGlass
Bore sizes2 mm, 4 mm, 6 mm, 8 mm, 10 mm
FunctionControls the flow of liquids or gases in glassware set-ups

Applications of the glass key stopcock

Glass key stopcocks are used where an all-glass flow path is wanted, for example on apparatus handling solvents that can attack some plastics.

  • Fitting on-off valves to glass apparatus during glassblowing
  • Controlling liquid flow from burettes, reservoirs and funnels
  • Opening and closing gas lines on glass manifolds
  • Replacing damaged stopcocks on existing apparatus

Scope of supply and ordering

The listing covers straight-through glass key stopcocks in the bore sizes and quantities you order. Accessories, spares and quantities are confirmed on the quotation.

MOQ, lead time and packing are confirmed on the quotation for quantity and destination. JaincoLab supplies single laboratories, glassblowing workshops, bulk orders for colleges and institutes, and export shipments to Africa, the Middle East and South and South-East Asia.

Frequently asked questions

Which bore sizes are listed?
2, 4, 6, 8 and 10 mm.

Does a glass key need grease?
Glass keys are normally used with a thin film of stopcock grease. PTFE key stopcocks are listed for grease-free use.

Is a PTFE key version available?
Yes. Stopcocks, PTFE Key, Straight Through are listed in the same bore sizes.

Related products

Other stopcocks in the same category:

Browse the Screw Caps, Stoppers and Stopcocks category, part of the range from JaincoLab, a laboratory glassware manufacturer in India.

Request a quote

To order Stopcocks, Glass Key, Straight Through, send the bore sizes, quantities and delivery destination through the JaincoLab contact page or email [email protected]. Tender and project enquiries can be sent through the tenders page.

Last updated: September 2026

   
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Office Address

Jain Scientific Suppliers
2475-84, Hargolal Road,
Ambala Cantt, Haryana, India

[email protected]

+91-85699-09696

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