BTFS40

Butterfly Valve – Double Flanged Type

Series	BTFS40
Standard	DIN / JIS
Pressure rating	PN6, PN10, PN16, JIS 5K, JIS 10K, JIS 16K
Size range	DN40…DN700
Connection	Double Flanged
Body material	Ductile cast iron (GGG40) / Carbon steel (EN 10025 S 275 JR)
Class	DIN PN6/10/PN16, JIS 5K/10K/16K
Stem Pattern	Square
Options	Other materials, flange connections
Options	Lever, Gearbox, Hydraulic, pneumatic or electric actuator

No.	Part	Material
	Body	Ductile cast iron (GGG40); Carbon steel (EN 10025 S 275 JR)
	Shaft	Stainless steel (AISI 406)
	Disc	Stainless steel (AISI 316); Aluminum Bronze Casting (Alu/Br CC333G); Super Duplex (1.4469)
	Seat Vulcanized	EPDM (-20 °C +110 °C); EPDM HT (+30 °C +130 °C); NBR (-10 °C +90 °C); Silicone MVQ (-60 °C +200 °C); Viton FPM (-15 °C +210 °C)

Suitable for both DIN and JIS flanges; bolt circle ØK given per flange standard.
Drawings shown for DN 40/500 and DN 600 (top flange detail).

Part	Material	Standard / temperature
Body	Grey cast iron	EN-GJL-250
Body	Nodular cast iron	EN-GJS-400-15
Body	Carbon steel	ASTM A216 WCB
Disc	Stainless steel	ASTM A351 CF8
Disc	Stainless steel	ASTM A351 CF8M
Disc	Aluminium alloy	EN AC-44100
Disc	Nodular cast iron	EN-GJS-400-15
Disc	Nodular cast iron, EPDM coated	EN-GJS-400-15 + EPDM
Disc	Tin / aluminium bronze	CuSn10-C / CuAl10Fe5Ni5-C
Disc	Carbon steel	ASTM A216 WCB
Disc	Duplex	ASTM A743 CD4MCuN
Disc	Super duplex	1.4469
Disc	Austenitic stainless steel	904L
Liner / seat	EPDM	-20 / +110 °C
Liner / seat	EPDM high temperature	+80 / +130 °C
Liner / seat	EPDM drinking water (WRAS, KTW, W270)	-20 / +95 °C
Liner / seat	EPDM food grade (FDA)	-20 / +110 °C
Liner / seat	NBR (nitrile)	-10 / +90 °C
Liner / seat	NBR food grade (FDA)	-10 / +90 °C
Liner / seat	Hydrogenated NBR	-10 / +90 °C
Liner / seat	Silicone (VMQ)	-60 / +200 °C
Liner / seat	Viton (FPM)	-15 / +210 °C
Liner / seat	Viton GF (FPM)	-5 / +210 °C
Liner / seat	Hypalon (CSM)	-25 / +125 °C
Liner / seat	Epichlorohydrin (ECO)	-40 / +125 °C

Body and disc can be coated with epoxy, Rilsan (polyamide 11) or Halar.

DN	L	JIS 5K ØK	JIS 10K ØK	JIS 16K ØK	PN6 ØK	PN10 ØK	PN16 ØK	B	A	E	E1	F	ISO	G
40	106	95	105	105	100	110	110	75	110	30	16	11x11	F07	90
50	108	105	120	120	110	125	125	82	120	30	16	11x11	F07	90
65	112	130	140	140	130	145	145	92	135	30	16	11x11	F07	90
80	114	145	150	160	150	160	160	100	141	30	16	11x11	F07	90
100	127	165	175	185	170	180	180	115	165	30	16	11x11	F07	90
125	140	200	210	225	200	210	210	127	180	33	18	14x14	F07	90
150	140	230	240	260	225	240	240	143	193	33	18	14x14	F07	90
200	152	280	290	305	280	295	295	172	225	33	18	17x17	F07	90
250	165	345	355	380	335	350	355	210	283	30	23	22X22	F10	130
300	178	390	400	430	395	400	410	240	308	30	23	22X22	F10	130
350	190	435	445	480	445	460	470	271	339	31	-	22X22	F10	160
400	216	495	510	540	495	515	525	308	380	31	-	27X27	F12	160
450	222	555	565	605	550	565	585	340	381	38	-	36X36	F14	190
500	229	605	620	660	600	620	650	380	433	38	-	36X36	F14	210
600	267	715	730	770	705	725	770	440	494	80	-	46X46	F16	210
700	292	820	840	875	810	840	840	485	560	106	-	46X46	F25	300

Overview