material of the pressure component	operating temperature °C ³)	PN 6 DN 15-200	PN 16 DN 15-500	PN 25 DN 15-500	PN 40 DN 15-500
		permissible operating pressure ¹) bar
GG 25 (cast iron 25) / EN-GJL-250 / EN-JL 1040	20	6	16
	200	5	13
	300	5	13
GGG 40 ⁴) / (cast iron 40) / EN-GJS-400-15 / EN-JS 1030	20		16	25
	200		13	20
	300		13	16
	350		10 ²)	15 ²)
GS-C25 ⁴) / (cast steel C25) GP240GH / 1.0619+N	20			25	40
	200			22	35
	300			17	28
	400			13	21
¹) The permissable operating pressure effective for 20° C can be used in the temperature range from -10° C up to +120° C. ²) not included on page 2 of DIN 2401 ³) Valves with innervalves of copper alloys only up to 225° C ⁴) For valves, which shall be applied for over 300° C, expansion screws are required for the flange connection with the pipeline.

For special areas the corresponding regulations must be followed!

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