Redring DC3810 manual

GUIDANCE NOTES - TYPICAL DISCHARGE PIPE ARRANGEMENT

SAFETY DEVICE

(e.g. TEMPERATURE RELIEF VALVE)	METAL DISCHARGE PIPE (D1)
	FROM TEMPERATURE RELIEF
	TO TUNDISH
500mm MAXIMUM
	TUNDISH
	300mm
	MINIMUM
		DISCHARGE BELOW
		FIXED GRATING
	METAL DISCHARGE PIPE (D2)	(3.9d GIVES ALTERNATIVE POINTS
		OF DISCHARGE)
	FROM TUNDISH,

WITH CONTINUOUS FALL	FIXED GRATING
(SEE 3.9d i-iv & TABLE 1)
	TRAPPED GULLY

SIZING OF D2 COPPER DISCHARGE PIPE FOR COMMON TEMPERATURE RELIEF VALVE OUTLET SIZES

VALVE	MINIMUM SIZE OF	MINIMUM SIZE OF	MAXIMUM RESISTANCE	RESISTANCE
			ALLOWED, EXPRESSED AS A	CREATED BY
OUTLET	DISCHARGE PIPE	DISCHARGE PIPE (D2)
			LENGTH OF STRAIGHT PIPE	EACH ELBOW
SIZE	(D1)	FROM TUNDISH
			(I.E. NO ELBOWS OR BENDS)	OR BEND
		22mm	up to 9m	0.8m
G1/2	15mm	28mm	up to 18m	1.0m
		35mm	up to 27m	1.4m
		28mm	up to 9m	1.0m
G3/4	22mm	35mm	up to 18m	1.4m
		42mm	up to 27m	1.7m
		35mm	up to 9m	1.4m
G1	28mm	42mm	up to 18m	1.7m
		54mm	up to 27m	2.3m

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