OS. series

Nominal diameters (DN) are not actual dimensions!

The nominal diameters DN10 .. DN200 only indicate ranges! The number is not a quantifiable unit, it is only indirectly related to the diameters of the connections and should not be used in calculations.

Bushes / flanges and shut-off valves for OS.A compressors (for refrigerant R717). The designations and attributions correspond to those in the Bitzer price list.
HP: high pressure side / discharge gas side
LP: low pressure side / suction side
S: standard
O: option
*: optional with suction line gas filter
Compressor	Side	Connection at compressor	D35L – 1 3/4'' (DN32)	D42L – 1 5/8'' (DN40)	D54L – 2 1/8" (DN50)	D64L – 2 5/8" (DN65/80)	D76L – 3 1/8" (DN80/100)	D89L – 3 1/2" (DN100)	D105L – 4 1/8" (DN100)	D108L – 4 1/4" (DN100)	DN125	DN150	DN200
OS.A53	HP	DN 40	O: Valve	S: Bush
OS.A53	LP	DN 50			S: Valve O: Bush
OS.A74	HP	DN 50			S: Bush O: Valve
OS.A74	LP	DN 80					S: Valve O: Bush
OS.A85	HP	DN 80				O: Bush O: Valve	S: Bush O: Valve
OS.A85	LP	DN 100					O: Bush O: Valve	O: Bush O: Valve	S: Bush O: Valve	O: Bush O: Valve
OS.A9573 .. 9583	HP	DN 100							S: Bush O: Valve	O: Bush O: Valve		O: Flange
OS.A9573 .. 9583	LP	DN 125									S: Flange O: Valve
OS.A9593 .. 95103	HP	DN 125									S: Flange O: Valve	O: Flange
OS.A9593 .. 95103	LP	DN 150										S: Flange O: Valve
OS.A105	HP	DN 150										S: Flange O: Valve
OS.A105	LP	DN 200											S: Flange* O: Valve*

Bushes / flanges and shut-off valves for OS. compressors. The designations and attributions correspond to those in the Bitzer price list.
HP: high pressure side / discharge gas side
LP: low pressure side / suction side
S: standard
O: option
Compressor	Side	Connection at compressor	D35L – 1 3/8" (DN32)	D42L – 1 5/8'' (DN40)	D54L – 2 1/8" (DN50)	D64L – 2 5/8" (DN65/80)	D76L – 3 1/8" (DN80/100)	D89L – 3 1/2" (DN100)	D105L – 4 1/8" (DN100)	D108L – 4 1/4" (DN100)
OS.53	HP	42 mm // 1 5/8''	O: Valve	S: Bush
OS.53	LP	54 mm // 2 1/8''			S: Valve O: Bush
OS.74	HP	54 mm // 2 1/8''			S: Bush O Valve
OS.74	LP	76 mm // 3 1/8''					S: Valve O: Bush
OS.85	HP	76 mm // 3 1/8''				O: Bush O: Valve	S: Bush O: Valve
OS.85	LP	DN100					O: Bush O: Valve	O: Bush O: Valve	S: Bush O: Valve	O: Bush O: Valve

OS. series

OS.A compressors (for R717)

OS. compressors