V51DD / F51DD WAFER DOUBLE DOOR CHECK VALVE

V51DD / F51DD WAFER DOUBLE DOOR CHECK VALVE

Fig No.: V51DD16 (PN16) / F51DD25 (PN25)

FEATURES & SPECIFICATIONS

Spring loaded double door.
Rubber seat for non-slam effect.
Durable fusion bonded epoxy coated.
Comply with DIN 3202-F1 / API 594.
Wafer connection to BS 4504 PN16 / EN 1092-2 PN16 / BS 4504 PN25 / EN 1092-2 PN25 / ANSI Class 150 (Specify on order).
Applicable for Building Services, Air-Conditioning, Fire-Protection, Cold Water Plumbing, Hot Water System, Sewerage & Water Treatment, General Industries.

Categories Iron Valves, Mechanical Service & HVAC

PRESSURE & TEMPERATURE RATINGS

Working Pressure	16bar / 25bar
Shell Testing Pressure (x1.5)	24bar / 37bar
Seat Testing Pressure (x1.1)	17.6bar / 27.5bar
Working Temperature	-20°C…110°C (EPDM seat ring) -10°C…80°C (NBR seat ring)
Suitable Media	Water, Oil, Gas

Material Specification

Part	Material	Specification
Body	Ductile Iron Stainless Steel 304 Stainless Steel 316	EN-JS 1050 BS970 304C15 BS970 316C16
Disc	Ductile Iron Aluminium Bronze Stainless Steel 304 Stainless Steel 316	EN-JS 1050 EN 1982 CC491K BS970 304C15 BS970 316C16
Stem	Stainless Steel 316	BS970 316S16
Seat Ring	EPDM / NBR	Commercial
Spring	Stainless Steel 304 Stainless Steel 316	BS970 304S15 BS970 316S16

DIMENSIONS

DN	(mm) (inch)	40 1½	50 2	65 2½	80 3	100 4	125 5	150 6	200 8	250 10	300 12	350 14	400 16	450 18	500 20	600 24	700 28	800 32
	L	43	43	46	64	64	70	76	89	114	114	127	140	152	152	178	229	241
	D (PN16)	91	103	123	142	157	192	218	268	328	380	444	495	554	616	724	806	905
	D (PN25)	91	103	123	142	167	192	218	279	334	399	456	512	554	616	724	–	–

Note: PN25 only available for sizes DN40 to DN600.

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