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Quick Disconnect Couplings
Koolance quick disconnects couplings are specially designed fittings which automatically shut-off coolant flow upon disconnection. The flow path is reestablished when the QDC couplings are reconnected. Quick disconnects are very useful for areas in a cooling or plumbing system that are altered and moved frequently. They can also increase convenience when transporting or draining a system.
![4th Gen](https://koolance.com/image/cache/data/categories/cat_fittings_qdc_low_pressure-74x74.jpg)
4th Gen
Koolance's Generation 4 quick disconnect couplings are dripless upon disconnection up to 0.5kgf/cm2 (7psi) of pressure.
![QD2 Series](https://koolance.com/image/cache/data/categories/cat_fittings_qd2-m_threaded-74x74.jpg)
![QD3 Series](https://koolance.com/image/cache/data/categories/cat_fittings_qd3-m_threaded-74x74.jpg)
![QD4 Series](https://koolance.com/image/cache/data/categories/cat_fittings_qd4-m_threaded-74x74.jpg)
![5th Gen](https://koolance.com/image/cache/data/categories/cat_fittings_qdc_high_pressure-74x74.jpg)
5th Gen
Koolance's Generation 5 quick disconnect couplings are dripless upon disconnection up to 10kgf/cm2 (142psi) of pressure.
![QD1H Series](https://koolance.com/image/cache/data/categories/cat_fittings_qd1-m_threaded-74x74.jpg)
![QD2H Series](https://koolance.com/image/cache/data/categories/cat_fittings_qd2h-m_threaded-74x74.jpg)
![QD3H Series](https://koolance.com/image/cache/data/categories/cat_fittings_qd3h-m_threaded-74x74.jpg)
![6th Gen](https://koolance.com/image/cache/data/categories/cat_fittings_qdc_6th_generation-74x74.jpg)
6th Gen
Koolance's Generation 6 quick disconnect couplings have improved durability through a redesigned valve structure, and can operate in a wider temperature range. They are available with EPDM or Viton seals, and are dripless upon disconnection up to 10kgf/cm2 (142psi) of pressure.
![QDT2 Series](https://koolance.com/image/cache/data/categories/cat_fittings_qdc_6th_qdt2-74x74.jpg)
![QDT3 Series](https://koolance.com/image/cache/data/categories/cat_fittings_qdc_6th_qdt3-74x74.jpg)
![QDT4 Series](https://koolance.com/image/cache/data/categories/cat_fittings_qdc_6th_qdt4-74x74.jpg)
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