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  | Avantor

Stopcocks

Stopcocks

With a ball valve, stopcocks control the flow of liquids and low pressure gases in delivery systems. Fitting into corresponding female joint parts, the plugs come in any number of bore hole arrangements. Often featuring tapered ends, a wider tube diameter range is accommodated for to increase working flexibility. The high quality, leak proof stopcocks meet vacuum applications and come in ground glass styles or plastic to eliminate the need of greasing.

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VWR® Stopcocks

VWR® Stopcocks

Supplier: VWR International

These stopcocks are ideal for use with liquids and gases under low pressure (operating pressure 7.0psi) or low vacuum.

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Two-Way Stopcock, HDPE, 6.8 mm bore, 10 mm hose barb, 7 psi max

Two-Way Stopcock, HDPE, 6.8 mm bore, 10 mm hose barb, 7 psi max

Supplier: VWR International

Easily adjust flow.

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Masterflex® Stopcocks with Tube Compression and NPT Connections, PTFE, Avantor®

Masterflex® Stopcocks with Tube Compression and NPT Connections, PTFE, Avantor®

Supplier: VWR International

Use with caustic and high-purity liquids in many applications.

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VWR® PTFE Stopcock for VWR Separating Funnels

Supplier: VWR International

Replacement 12 mm stopcock for VWR® separating funnels.

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Three-Way Stopcock, PTFE PLUG with Oblique Bore, Ace Glass

Three-Way Stopcock, PTFE PLUG with Oblique Bore, Ace Glass

Supplier: Ace Glass

Oblique bore with polished barrels.

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High Vacuum Stopcock with Easy Action Plug, Quick Open, Ace Glass Incorporated

High Vacuum Stopcock with Easy Action Plug, Quick Open, Ace Glass Incorporated

Supplier: Ace Glass

High vacuum stopcock with easy action plug that has blunt, flat end instead of the tapered end

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High Vacuum Stopcock, T-Bore, Ace Glass Incorporated

High Vacuum Stopcock, T-Bore, Ace Glass Incorporated

Supplier: Ace Glass

Precision grade with T-Bore hollow or solid glass plug.

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Three-Way T-Bore Stopcock, Ace Glass

Three-Way T-Bore Stopcock, Ace Glass

Supplier: Ace Glass

High pressure with solid glass plug.

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PTFE Plug-Style Stopcocks, DWK Life Sciences

PTFE Plug-Style Stopcocks, DWK Life Sciences

Supplier: DWK Life Sciences (KIMBLE)

PTFE stopcock plug has a 1:5 taper and is chemically-resistant and self-lubricating.

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Stopcocks, Three-Way, T-Bore, Ace Glass

Stopcocks, Three-Way, T-Bore, Ace Glass

Supplier: Ace Glass

With solid glass plug.

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Stopcock, Vacuum, PTFE, Ace Glass Incorporated

Stopcock, Vacuum, PTFE, Ace Glass Incorporated

Supplier: Ace Glass

Easy-Action PTFE plugs permit smooth adjustment

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High Vacuum Stopcock, Three-Way, T-Bore, Ace Glass Incorporated

High Vacuum Stopcock, Three-Way, T-Bore, Ace Glass Incorporated

Supplier: Ace Glass

With hollow plug, for connecting either the right or left outlet with the bottom outlet.

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Low Hold-Up Vacuum Stopcock, Ace Glass

Low Hold-Up Vacuum Stopcock, Ace Glass

Supplier: Ace Glass

Threaded vacuum stopcock with PTFE plug and new hooded handle that permits smooth needle valve adjustment down to 0.1 cc/min flow rate.

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Three-Way Stopcock with 120 Degree Bore, Glass Plug, Ace Glass

Three-Way Stopcock with 120 Degree Bore, Glass Plug, Ace Glass

Supplier: Ace Glass

With 120° bore and solid glass plug.

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Stopcock Plugs, T-Bore, 1:5 PTFE, Ace Glass Incorporated

Stopcock Plugs, T-Bore, 1:5 PTFE, Ace Glass Incorporated

Supplier: Ace Glass

These T-Bore stopcock plugs are fabricated from PTFE

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KIMBLE® Straight-Bore Stopcock with PTFE Plug, DWK Life Sciences

KIMBLE® Straight-Bore Stopcock with PTFE Plug, DWK Life Sciences

Supplier: DWK Life Sciences (KIMBLE)

The more exaggerated taper of this stopcock permits easier use at higher-than-ambient temperatures.

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