• 

  Swagelok SS-56F4, alternative is CLSS-FNS4 with brand Fitok

• 

  FITRAMEC 56-8M-50F

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  Piusi F02012P0A Type ST Panther 56M/K33

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  Kraus & Naimer CA10 TR3358-600 E ( S1 V840G/D61/A11 F056)

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  Yuken A56-F-R-01-H-K-32

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  Clipsal (Schneider Electric) 56P320F-EO

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  Clipsal (Schneider Electric) 56SO320F-GY

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  Comintec DSR/F/FS 0.56 T2

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  Reliable Automatic Sprinkler F1FR56

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  Actreg F-F 5.6 CM