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MK7 Golf R GTI BOV & Bypass Valves | Boomba Racing
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https://www.caltrol.com/products/valves-actuators-regulators/regulators/pump-protection/fisher-n100-n100a-n110-series-bypass-valves/
Fisher N100-N100A-N110 Series Bypass Valves
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https://herzvalves.com/catalog.php?catID=687
Herz Valves UK Ltd. - Radiator Valves - Herz 3000 - HERZ-3000-Bypass Bodies for One-Pipe Systems
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NH3 Bypass Valves
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