Classification

Wafer-type metal hard-sealed butterfly valve

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Classification:

Cast steel valve series

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400-6166669

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Description

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆Product Applications

This butterfly valve is suitable for use in food processing, pharmaceuticals, petrochemicals, power plants, steel mills, industrial wastewater treatment, as well as in high-rise buildings and water supply and drainage pipelines, making it an ideal device for flow regulation and fluid shut-off.

◆Product Features

1. This valve features a triple-eccentric sealing design, resulting in virtually no wear on the valve seat and butterfly disc, and providing a self‑tightening sealing action that improves as the valve closes.
2. The sealing ring is made of stainless steel, combining the dual advantages of metal hard sealing and elastic sealing. It delivers excellent sealing performance across both low- and high-temperature ranges and features corrosion resistance and a long service life. 3. The butterfly plate’s sealing surface is surfaced with cobalt-based hard alloy, providing superior wear resistance and an extended service life.
4. Large‑size butterfly valves feature a truss‑type structure, offering high strength, a large flow area, and low flow resistance.
5. This valve features bidirectional sealing, and its installation is unaffected by the flow direction of the medium or by spatial orientation; it can be installed in any position.
6. The drive unit can be installed in multiple configurations—vertically or horizontally—providing greater convenience for users.

◆Applicable Standards

Design and Manufacturing	Flanged connection	Structural length	Testing and Inspection
GB/T 12238, JB/T8527	GB/T 9113, JB/T 79, HG 20592	GB/T 12221	GB/T 13927
API 609	EN1092-1/2, ANSI/ASME B16.5/B16.47, JIS B2220	API 609, EN558	API 598

◆Main Technical Parameters

Nominal diameter	DN(mm)	50~2000				50~500
Nominal pressure	PN(MPa)	0.6	1.0	1.6	2.5	4.0
Test pressure Ps (MPa)	Strength test	0.9	1.5	2.4	3.75	6.0
	Sealing test	0.66	1.1	1.76	2.75	4.4
	Air-tightness test	0.6	0.6	0.6	0.6	0.6
Leakage rate	Zero leakage or <0.1×DN mm³/s (in compliance with GB/T 13927)
Applicable temperature	Carbon steel: -29°C to 425°C Stainless steel: -40°C to 600°C
Applicable medium	Air, water, steam, coal gas, petroleum products, and weakly corrosive media such as acids, alkalis, and salts, etc.
Drive type	Worm gear drive, pneumatic drive, electric drive, hydraulic drive

◆Materials of Main Components

Part Name	Materials
Valve body	Cast steel, chromium-molybdenum steel, alloy steel, duplex steel
Butterfly plate	Cast steel, chromium-molybdenum steel, alloy steel, duplex steel
Valve seat	Stainless steel, hard alloys such as Stellite overlay welding, etc.
Sealing ring	Stainless steel and high-temperature-resistant asbestos boards are combined into a multi-layer structure.
Valve stem	20Cr13, 1Cr13 stainless steel, chromium-molybdenum steel, special materials
Bushing	Austenitic stainless steel, 304 nitriding
Filler	Flexible graphite, PTFE
Stuffing gland	Cast steel, stainless steel
Bracket	Cast steel, stainless steel

◆Main External Connection Dimensions

DN		L		H	D373H			D673H			D973H			PN0.6MPa		PN1.0MPa
millimeter	inch	short	long	H	H1	A ₁	B ₁	H ₂	A ₂	B ₂	H ₃	A ₃	B ₃	D ₁	Z-Фd	D1	Z-Фd
40	11/2	33	33	107	330	180	200	625	245	72	530	250	255	100	4-14	110	4-18
50	2	43	43	112	350	180	200	625	245	72	530	250	255	110	4-14	125	4-18
65	2¹/2	46	46	115	370	180	200	625	245	72	530	250	255	130	4-14	145	8-18
80	3	46	64	125	380	180	200	645	245	72	565	250	255	150	4-18	160	8-18
100	4	52	64	138	420	180	200	675	355	92	600	250	255	170	4-18	180	8-18
125	5	56	70	164	460	180	200	715	355	92	640	250	255	200	8-18	210	8-18
150	6	56	76	175	555	270	280	800	355	92	704	300	315	225	8-18	240	8-22
200	8	60	89	215	780	400	425	850	250	170	775	300	315	280	8-18	295	8-22
250	10	68	114	243	840	400	425	925	250	170	945	300	315	335	12-18	350	12-22
300	12	78	114	285	995	450	560	1035	450	220	1070	300	315	395	12-22	400	12-22
350	14	78	127	320	1050	450	560	1070	450	220	1140	300	315	445	12-22	460	16-22
400	16	102	140	350	1220	535	580	1190	450	220	1210	300	315	495	16-22	515	16-26
450	18	114	152	350	1280	535	580	1250	650	280	1335	575	714	550	16-22	565	20-26
500	20	127	152	380	1365	535	580	1290	650	280	1415	575	714	600	20-22	620	20-26
600	24	154	178	435	1460	570	660	1455	850	380	1605	656	810	705	20-26	725	20-30
700	28	165	229	480	1520	750	550	1585	850	380	1844	656	810	810	24-26	840	24-30
800	32	190	241	530	1710	750	550	1700	1250	380	2040	656	810	920	24-30	950	24-33
900	36	203	241	595	1810	750	550	1965	1250	380	2255	785	863	1020	24-30	1050	28-33
1000	40	216	300	650	1900	900	750	2015	1250	380	2380	785	863	1120	28-30	1160	28-36
1200	48	254	360	775	1180	1000	925	2250	1250	380	2640	785	863	1340	32-33	1380	32-39

◆Main External Connection Dimensions

DN		L		H	D373H			D673H			D973H			PN1.6MPa		PN2.5MPa
millimeter	inch	short	long	H	H1	A ₁	B ₁	H ₂	A ₂	B ₂	H ₃	A ₃	B ₃	D ₁	Z-Фd	D1	Z-Фd
40	11/2	33	33	107	330	180	200	625	245	72	530	250	255	110	4-18	110	4-18
50	2	43	43	112	350	180	200	625	245	72	530	250	255	125	4-18	125	4-18
65	2	46	46	115	370	180	200	625	245	72	530	250	255	145	8-18	145	8-18
80	3	46	64	125	380	180	200	645	245	72	565	250	255	160	8-18	160	8-18
100	4	52	64	138	420	180	200	675	355	92	600	250	255	180	8-18	190	8-22
125	5	56	70	164	460	180	200	715	355	92	640	250	255	210	8-18	220	8-26
150	6	56	76	175	555	270	280	800	355	92	704	300	315	240	8-22	250	8-26
200	8	60	89	215	780	400	425	850	250	170	775	300	315	295	12-22	310	12-26
250	10	68	114	243	840	400	425	925	250	170	945	300	315	355	12-26	370	12-30
300	12	78	114	285	995	450	560	1035	450	220	1070	300	315	410	12-26	430	16-30
350	14	78	127	320	1050	450	560	1070	450	220	1140	300	315	470	16-26	490	16-33
400	16	102	140	350	1220	535	580	1190	450	220	1210	300	315	525	16-30	550	16-36
450	18	114	152	350	1280	535	580	1250	650	280	1335	575	714	585	20-30	600	20-36
500	20	127	152	380	1365	535	580	1290	650	280	1415	575	714	650	20-33	660	20-36
600	24	154	178	435	1460	570	660	1455	850	380	1605	656	810	770	20-36	770	20-39
700	28	165	229	480	1520	750	550	1585	850	380	1844	656	810	840	24-36	875	24-42
800	32	190	241	530	1710	750	550	1700	1250	380	2040	656	810	950	24-39	990	24-48
900	36	203	241	595	1810	750	550	1965	1250	380	2255	785	863	1050	28-39	1090	28-48
1000	40	216	300	650	1900	900	750	2015	1250	380	2380	785	863	1170	28-42	1210	28-56
1200	48	254	360	775	1180	1000	925	2250	1250	380	2640	785	863	1390	32-48	1420	32-56

Note: In this table, flange dimensions are in accordance with the JB/T 79 standard series 1 and EN 1092‑1/2; the overall length is specified by GB/T 12221 and EN 558.