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Stopcocks, Valves

Here you find stopcocks and valves in several forms and with diverse characteristics: We offer e. g. clearance valves or one-way-valves as well as high vacuum or PTFE valves. Due to their fine thread, high vacuum valves are suitable for exact dosing. PTFE valves enable greaseless analyses. Stopcocks have several outflows: one-way, two-way or three-way and are also available with hose connectors. We stock products of numerous renowned manufacturers, e.g. stopcocks made of PTFE by Bohlender or made of borosilicate glass by Duran.

Here you find further information on 2- and 3-Way-Stopcocks.

Items 1-50 of 270

Product Image of Two-way valve, PVDF, Ø 5-7 mm, NW 4 mm, white, old No. 8607-6
Two-way valve, PVDF, Ø 5-7 mm, NW 4 mm, white, old No. 8607-6
Item number: BÜ8607-0060
Brand: Bürkle

In stock

$18.58
Product Image of IBC discharge valve w/ angle discharge - S60x6/ 1''
IBC discharge valve w/ angle discharge - S60x6/ 1''
Item number: BÜ0534-0002
Brand: Bürkle

In stock

$125.23
Product Image of Two-way stop-cock/PP, bore 4mm with Teflon-TFE-plugs
Two-way stop-cock/PP, bore 4mm with Teflon-TFE-plugs
Item number: NL64600004
Brand: Nalgene Thermo Scientific

In stock

$108.92
Product Image of Pinch cock 18/10 Steel, B = 40 mm, open on the side
Pinch cock 18/10 Steel, B = 40 mm, open on the side
Item number: BO12545
Brand: Bochem
$23.74
Product Image of HOFFMANN-type screw valve, B=70mm, heavy-duty, with flap, nickel-plated brass
HOFFMANN-type screw valve, B=70mm, heavy-duty, with flap, nickel-plated brass
Item number: BO12542
Brand: Bochem
$21.58
Product Image of HOFFMANN-type screw valve, B=30mm, nickel-plated brass, with flap
HOFFMANN-type screw valve, B=30mm, nickel-plated brass, with flap
Item number: BO12534
Brand: Bochem
$8.59
Product Image of Tap (PE) self-venting, for vessels with 3/4 internal thread, 1 Unit (2 to 3/4 reducer supplied)
Tap (PE) self-venting, for vessels with 3/4 internal thread, 1 Unit (2 to 3/4 reducer supplied)
Item number: MC1129380001
Brand: Merck
$66.15
Product Image of Safety vavle Safety vavle
Safety vavle Safety vavle
Item number: HI9903202
Brand: Hirschmann
$54.61
Product Image of Recirculation valve HF Recirculation valve HF
Recirculation valve HF Recirculation valve HF
Item number: HI9316626
Brand: Hirschmann
$111.97
Product Image of Discharge valve HF Discharge valve HF
Discharge valve HF Discharge valve HF
Item number: HI9316528
Brand: Hirschmann
$111.97
Product Image of Discharge valve HF Discharge valve HF
Discharge valve HF Discharge valve HF
Item number: HI9316028
Brand: Hirschmann
$118.74
Product Image of Valve for Varitips S 100 pcs.
Valve for Varitips S 100 pcs.
Item number: EP0030050541
Brand: Eppendorf
$165.47
Product Image of DURAN® Single way stopcocks, complete with hollow key with glass handle, bore 4 mm, NS 18.8, 25 pc/PAK
DURAN® Single way stopcocks, complete with hollow key with glass handle, bore 4 mm, NS 18.8, 25 pc/PAK
Item number: DU286459209
Brand: Duran Group
$2,931.08
Product Image of DURAN® Single way stopcocks, compl. with hollow key with glass handle, bore 2,5 mm, NS 14.5, 50 pc/PAK
DURAN® Single way stopcocks, compl. with hollow key with glass handle, bore 2,5 mm, NS 14.5, 50 pc/PAK
Item number: DU286458804
Brand: Duran Group
$5,069.21
Product Image of DURAN® Single way stopcocks, taper 1:5, ground and polished, without keys, bore 8 mm, NS 28, 5 pc/PAK
DURAN® Single way stopcocks, taper 1:5, ground and polished, without keys, bore 8 mm, NS 28, 5 pc/PAK
Item number: DU286457208
Brand: Duran Group
$744.49
Product Image of DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 10 mm, NS 28, 5 pc/PAK
DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 10 mm, NS 28, 5 pc/PAK
Item number: DU286457002
Brand: Duran Group
$744.49
Product Image of DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 6 mm, NS 19.5, 25 pc/PAK
DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 6 mm, NS 19.5, 25 pc/PAK
Item number: DU286456409
Brand: Duran Group
$2,577.87
Product Image of DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 4 mm, NS 18.2, 25 pc/PAK
DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 4 mm, NS 18.2, 25 pc/PAK
Item number: DU286456006
Brand: Duran Group
$1,559.15
Product Image of DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 2 mm, NS 13.5, 50 pc/PAK
DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 2 mm, NS 13.5, 50 pc/PAK
Item number: DU286455601
Brand: Duran Group
$2,470.10
Product Image of DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 2,5 mm, NS 13.5, 50 pc/PAK
DURAN® Single way stopcocks, taper 1:5, ground and polished, w/o keys, bore 2,5 mm, NS 13.5, 50 pc/PAK
Item number: DU286455404
Brand: Duran Group
$2,470.10
Product Image of DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 8 mm, NS 28, 5 pc/PAK
DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 8 mm, NS 28, 5 pc/PAK
Item number: DU286454202
Brand: Duran Group
$1,262.90
Product Image of DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 10 mm, NS 28, 5 pc/PAK
DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 10 mm, NS 28, 5 pc/PAK
Item number: DU286454005
Brand: Duran Group
$1,262.90
Product Image of DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 6 mm, NS 19.5, 25 pc/PAK
DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 6 mm, NS 19.5, 25 pc/PAK
Item number: DU286453806
Brand: Duran Group
$3,921.48
Product Image of DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 4 mm, NS 18.2, 25 pc/PAK
DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 4 mm, NS 18.2, 25 pc/PAK
Item number: DU286453403
Brand: Duran Group
$2,792.63
Product Image of DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 2,5 mm, NS 13.5, 50 pc/PAK
DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 2,5 mm, NS 13.5, 50 pc/PAK
Item number: DU286453206
Brand: Duran Group
$3,588.73
Product Image of DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 2 mm, NS 13.5, 50 pc/PAK
DURAN® Single way stopcocks, taper 1:5, with PTFE keys, bore 2 mm, NS 13.5, 50 pc/PAK
Item number: DU286453009
Brand: Duran Group
$3,588.73
Product Image of DURAN® Single way stopcocks, ground, without keys, bore 10 mm, NS 29.2, 5 pc/PAK
DURAN® Single way stopcocks, ground, without keys, bore 10 mm, NS 29.2, 5 pc/PAK
Item number: DU286447001
Brand: Duran Group
$646.79
Product Image of DURAN® Single way stopcocks, ground, without keys, bore 8 mm, NS 24, 5 pc/PAK
DURAN® Single way stopcocks, ground, without keys, bore 8 mm, NS 24, 5 pc/PAK
Item number: DU286446802
Brand: Duran Group
$526.43
Product Image of DURAN® Single way stopcocks, ground, without keys, bore 6 mm, NS 21.5, 5 pc/PAK
DURAN® Single way stopcocks, ground, without keys, bore 6 mm, NS 21.5, 5 pc/PAK
Item number: DU286446605
Brand: Duran Group
$339.52
Product Image of DURAN® Single way stopcocks, ground, without keys, bore 6 mm, NS 18.8, 25 pc/PAK
DURAN® Single way stopcocks, ground, without keys, bore 6 mm, NS 18.8, 25 pc/PAK
Item number: DU286446005
Brand: Duran Group
$1,271.24
Product Image of DURAN® Single way stopcocks, ground, without keys, bore 4 mm, NS 18.8, 25 pc/PAK
DURAN® Single way stopcocks, ground, without keys, bore 4 mm, NS 18.8, 25 pc/PAK
Item number: DU286445403
Brand: Duran Group
$1,074.57
Product Image of DURAN® Single way stopcocks, ground, without keys, bore 4 mm, NS 14.5, side arms 10 mm, 50 pc/PAK
DURAN® Single way stopcocks, ground, without keys, bore 4 mm, NS 14.5, side arms 10 mm, 50 pc/PAK
Item number: DU286444407
Brand: Duran Group
$1,773.12
Product Image of DURAN® Single way stopcocks, ground, without keys, bore 2,5 mm, NS 14.5, side arms 9 mm, 50 pc/PAK
DURAN® Single way stopcocks, ground, without keys, bore 2,5 mm, NS 14.5, side arms 9 mm, 50 pc/PAK
Item number: DU286443805
Brand: Duran Group
$1,524.54
Product Image of DURAN® Single way stopcocks, ground, without keys, bore 2 mm, NS 12.5, 50 pc/PAK
DURAN® Single way stopcocks, ground, without keys, bore 2 mm, NS 12.5, 50 pc/PAK
Item number: DU286442809
Brand: Duran Group
$1,404.97
Product Image of DURAN® Single way stopcocks, ground and polished, without keys, bore 10 mm, NS 29.2, 5 pc/PAK
DURAN® Single way stopcocks, ground and polished, without keys, bore 10 mm, NS 29.2, 5 pc/PAK
Item number: DU286441607
Brand: Duran Group
$913.62
Product Image of DURAN® Single way stopcocks, ground and polished, without keys, bore 8 mm, NS 24, 5 pc/PAK
DURAN® Single way stopcocks, ground and polished, without keys, bore 8 mm, NS 24, 5 pc/PAK
Item number: DU286441401
Brand: Duran Group
$717.12
Product Image of DURAN® Single way stopcocks, ground and polished, without keys, bore 6 mm, NS 21.5, 5 pc/PAK
DURAN® Single way stopcocks, ground and polished, without keys, bore 6 mm, NS 21.5, 5 pc/PAK
Item number: DU286441007
Brand: Duran Group
$553.33
Product Image of DURAN® Single way stopcocks, ground/polished, w/o keys, bore 6 mm, NS 18.8, side arms 13 mm, 25 pc/PAK
DURAN® Single way stopcocks, ground/polished, w/o keys, bore 6 mm, NS 18.8, side arms 13 mm, 25 pc/PAK
Item number: DU286440602
Brand: Duran Group
$1,709.40
Product Image of DURAN® Single way stopcocks, ground/polished, w/o keys, bore 4 mm, NS 18.8, side arms 10 mm, 25 pc/PAK
DURAN® Single way stopcocks, ground/polished, w/o keys, bore 4 mm, NS 18.8, side arms 10 mm, 25 pc/PAK
Item number: DU286440405
Brand: Duran Group
$1,552.86
Product Image of DURAN® Single way stopcocks, ground/polished, w/o keys, bore 4 mm, NS 14.5, side arms 10 mm, 50 pc/PAK
DURAN® Single way stopcocks, ground/polished, w/o keys, bore 4 mm, NS 14.5, side arms 10 mm, 50 pc/PAK
Item number: DU286439807
Brand: Duran Group
$2,899.62
Product Image of DURAN® Single way stopcocks, ground/polished, w/o keys, bore 2,5 mm, NS 14.5, side arms 9 mm, 50 pc/PAK
DURAN® Single way stopcocks, ground/polished, w/o keys, bore 2,5 mm, NS 14.5, side arms 9 mm, 50 pc/PAK
Item number: DU286439601
Brand: Duran Group
$2,668.34
Product Image of DURAN® Single way stopcocks, ground and polished, without keys, bore 1,5 mm, NS 12.5, 50 pc/PAK
DURAN® Single way stopcocks, ground and polished, without keys, bore 1,5 mm, NS 12.5, 50 pc/PAK
Item number: DU286439001
Brand: Duran Group
$2,459.09
Product Image of DURAN® Stopcocks, two way, complete with PTFE-keys, bore 6 mm, NS 21.5, 10 pc/PAK
DURAN® Stopcocks, two way, complete with PTFE-keys, bore 6 mm, NS 21.5, 10 pc/PAK
Item number: DU286426003
Brand: Duran Group
$3,367.83
Product Image of DURAN® Stopcocks, two way, ground, without keys, NS 18.8, 10 pc/PAK
DURAN® Stopcocks, two way, ground, without keys, NS 18.8, 10 pc/PAK
Item number: DU286425804
Brand: Duran Group
$1,532.09
Product Image of DURAN® Stopcocks, two way, complete with PTFE-keys, bore 4 mm, NS 18.8, 10 pc/PAK
DURAN® Stopcocks, two way, complete with PTFE-keys, bore 4 mm, NS 18.8, 10 pc/PAK
Item number: DU286425607
Brand: Duran Group
$2,288.54
Product Image of DURAN® Stopcocks, two way,ground, without keys, NS 18.8, 10 pc/PAK
DURAN® Stopcocks, two way,ground, without keys, NS 18.8, 10 pc/PAK
Item number: DU286425204
Brand: Duran Group
$1,078.98
Product Image of DURAN® Stopcocks, two way, complete with SBW-keys, bore 4 mm, NS 18.8/50, 10 pc/PAK
DURAN® Stopcocks, two way, complete with SBW-keys, bore 4 mm, NS 18.8/50, 10 pc/PAK
Item number: DU286425007
Brand: Duran Group
$1,807.42
Product Image of DURAN® Stopcocks, two way, ground and polished, without keys, NS 14.5, 10 pc/PAK
DURAN® Stopcocks, two way, ground and polished, without keys, NS 14.5, 10 pc/PAK
Item number: DU286424808
Brand: Duran Group
$1,144.11
Product Image of DURAN® Stopcocks, two way, complete with PTFE-keys, bore 2,5 mm, NS 14.5, 10 pc/PAK
DURAN® Stopcocks, two way, complete with PTFE-keys, bore 2,5 mm, NS 14.5, 10 pc/PAK
Item number: DU286424208
Brand: Duran Group
$1,748.58
Product Image of DURAN® Stopcocks, two way, ground, without keys, NS 14.5, 10 pc/PAK
DURAN® Stopcocks, two way, ground, without keys, NS 14.5, 10 pc/PAK
Item number: DU286423006
Brand: Duran Group
$744.18

Items 1-50 of 270

Duran Stopcocks & Valves

The manufacturer Duran is well-known for high quality lab supply made of borosilicate glass. This extraordinary robust and temperature resistant material is a relevant alternative in the manufacturing of stopcocks. Duran's stopcock range stands out thanks to high manufacturing accuracy and very good ground joint quality. This ensures you have highly effective sealing and interchangeability. For use at higher temperatures stopcocks with glass key are preferable. Stopcocks with PTFE keys enable grease-free working. Alongside standard stopcocks, Duran also offers high-vacuum adapted PRODURAN® valves.