The Burkle StopCock straight-through is a compact liquid dispensing tap designed for controlled flow from containers, canisters and barrels with G 3/4" threaded connections. The plug-valve design allows the liquid flow to be throttled or shut off as required.
This StopCock family is available in three connection configurations, allowing you to select the version that best matches your container and downstream connection. All three models use a G 3/4" connection and are rated for a maximum operating pressure of 2 bar at 20 °C.
| Model | Connection Configuration | Length | Best For |
|---|---|---|---|
| 0525-3000 | G 3/4" External → G 3/4" External | 85 mm | Applications requiring an external-thread connection at both ends |
| 0525-5000 | G 3/4" Cap Nut → G 3/4" External | 85 mm | Container-side cap-nut connection with an external-thread outlet |
| 0525-7000 | G 3/4" Cap Nut → G 3/4" Cap Nut | 93 mm | Applications requiring cap-nut connections at both ends |
StopCocks provide a simple way to control liquid discharge from containers fitted with compatible G 3/4" connections. The valve can be used to throttle the flow or shut it off, making it suitable for controlled dispensing, transfer and draining applications.
Burkle states that StopCock discharge taps fit containers with G 3/4" connection threads, while thread adapters can be used to facilitate connection to a wide range of other containers.
| Product family | Burkle StopCock straight-through |
| Valve design | Plug valve |
| Connection size | G 3/4" |
| Maximum operating pressure | 2 bar at 20 °C |
| Flow rate | Low flow rate |
| General materials | PP, PE-HD (HDPE) |
| Further materials | PTFE, PE-LD (LDPE) |
| Colour | Blue |
| Packaging | 1 piece |
The 0525-3000 has a G 3/4" external thread at the container connection and a G 3/4" external thread at the outlet. This configuration is appropriate when both mating connections require an internal G 3/4" thread.
The 0525-5000 combines a G 3/4" cap-nut connection with a G 3/4" external-thread outlet. This provides a flexible configuration when the container-side connection requires a cap nut while the downstream connection uses an internal G 3/4" thread.
The 0525-7000 uses G 3/4" cap-nut connections at both ends. This configuration is useful where the StopCock needs to connect between compatible components using cap-nut connections.
| Application | How the StopCock Helps |
|---|---|
| Liquid dispensing | Provides controlled opening, throttling and shut-off of liquid flow. |
| Container draining | Allows liquid to be discharged from compatible G 3/4" containers. |
| Laboratory liquid handling | Provides a compact valve for controlled transfer and dispensing setups. |
| Canister and barrel dispensing | Provides a threaded StopCock connection for compatible storage containers. |
These straight-through StopCocks can be combined with Burkle StopCock accessories for different liquid-transfer requirements. Compatible hose nozzles allow a hose to be connected directly to StopCock taps with an external thread, while the StopCock discharge angle provides a rotatable outlet for directing liquid into smaller or harder-to-reach openings.
Burkle specifies that these StopCock models are not suitable for crystallizing substances. Chemical compatibility should also be confirmed for the specific liquid and operating conditions before use.
All three variants use G 3/4" connections. The difference is whether each connection is an external thread or a cap-nut configuration.
The 0525-3000 has external threads on both ends. The 0525-5000 has a cap nut on one end and an external thread on the other. The 0525-7000 has cap nuts on both ends.
The manufacturer specifies a maximum operating pressure of 2 bar at 20 °C.
Yes. Burkle offers dedicated StopCock hose nozzles that screw onto StopCock taps with an external thread, allowing compatible hose to be connected directly to the outlet.
No. Material compatibility depends on the liquid and operating conditions. Burkle provides chemical-resistance information, and compatibility should be verified before use.
If you are unsure which connection configuration matches your container or dispensing setup, contact Cambridge Environmental Products for assistance selecting the appropriate model.
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