Butt welded hard seal butterfly valve

Features:
1, the use of three eccentric butterfly valve called the top of the process valve, this design makes the valve for high temperature, high pressure, fire protection applications in the bubble-level seal of the ideal hard seal butterfly valve. 
2, due to the use of welded structure, so that the valve and pipe plane to achieve a permanent zero leakage. 
3, this valve without flanges, the pipe and insulation bandage has brought a lot of convenience and beautiful.

The main technical parameters of the hard seal butterfly valve

Nominal diameter DN (mm)	DN (100 ~ 400) mm, in4 ~ 48
Nominal pressure PN (MPa)	Strength test (1.5 × PN) Seal test (1.1 × PN)
proper temperature	Carbon steel: -29 ℃ ~ 425 ℃, stainless steel: -40 ℃ ~ 650 ℃
Applicable media	Water, steam, hot water, oil
Drive mode	Worm gear, electric, pneumatic, hydraulic
Pressure Level	ANSI 150Lb pounds / PN25
Welding standards	GB12224, ANSI B16, 25, DIN2559

 

Main parts materials

Part Name	material
Body	Carbon steel, stainless steel, chrome aluminum
Butterfly board	Carbon steel, alloy steel, stainless steel
Seat	stainless steel, cobalt based carbide
Bushings	stainless steel
Stem	Stainless steel, special materials
filler	Flexible graphite

D363H / 663H / 963H / -10 / 16/25/40 / C, P, R Hinged Hard Seal Butterfly Valve Connection Dimensions

Nominal diameter		Main dimensions			Nominal diameter		Main dimensions
in	DN (mm)	L	H1	H	in	DN (mm)	L	H1	H
4	100	190	270	370	18	450	330	535	820
5	125	200	295	390	20	500	350	560	900
6	150	210	308	416	24	600	390	630	980
8	200	230	370	530	28	700	430	670	1100
10	250	250	450	580	32	800	470	800	1300
12	300	270	465	630	36	900	510	850	1370
14	350	290	475	595	40	1000	550	880	1480
16	400	310	505	755	48	1200	630	1000	1690