Concentric Wafer Butterfly Valves for Sale

Inquire Now Pneumatic Wafer Butterfly Valves

product description

Concentric wafer butterfly valve, manufactured by Xinhai, can be rotated to 90 degree to open or close valve, having the advantages of compact construction, reliable seal and long service life. The valve is widely used for water supply and drainage system to regulate or cut-off medium, in chemical industry, food and other industries.

Characteristic of Concentric Wafer Butterfly Valve

1. Utilizing dual eccentric structure and having reliable seal.

2. Adopting stainless steel and oil resistent nitrile rubber, having long service life.

3. Seal ring can be used on the valve body and disc, which is applicable for different medium as required.

4. Frame structure disc, having the advantages of high strength, large flow area and low flow resistance.

5. The whole valve uses baking finish which can resist corrosion effectively. Otherwise, changing seal materials, the valve can be applicable for different medium.

6. The vale has dual eccentric structure. It can be installed in any position without the limitation of medium flow and space.

7. Unique structure, convenient utilization.

Parameter

Nominal diameter（mm)	50～2000		50～1600
Nominal Pressure PN（MPa)	0.6	1.0	1.6
Seal test(MPa)	0.66	1.1	1.76
Shell test(MPa)	0.9	1.5	2.4
Applicable temperature	Nitrile rubber: -40℃～90℃, fluororubber: -20℃～200℃
Applicable medium	Water, air, gas, oil and other weak corrosive fluid
Leakage rate	GB/T13927-92
Actuation mode	Worm gear, electric, pneumatic, electrohydraulic

Materials

Components	Materials
Valve body	WCB、QT450-10、HT200、HT250
Disc	WCB、QT450-10、HT200、HT250
Valve shaft	2Cr13
Seal ring	Oil resistent nitrile rubber
packing	Flexible graphite

Implementation Standards

Manufacturing standard	GB/T 122387-89
Flange standard	GB9113-2000、GB17241.6-1998
Face to face standard	GB12221-89
Inspection standard	GB/T 13927-92

Main Dimensions Unit: mm

DN	L	H	HO	A	B	0.6MPa		1.0MPa		1.6MPa
DN	L	H	HO	A	B	DO	n-d	DO	n-d	DO	n-d
50	43	63	306	180	200	110	4-14	125	4-18	125	4-18
65	46	70	321	180	200	130	4-14	145	4-18	145	4-18
80	46	83	346	180	200	150	4-18	160	8-18	160	8-18
100	52	105	387	180	200	170	4-18	180	8-18	180	8-18
125	56	115	411	180	200	200	8-18	210	8-18	210	8-18
150	56	137	447	270	280	225	8-18	240	8-22	240	8-22
200	60	164	572	270	280	280	8-18	295	8-22	295	8-22
250	68	206	646	270	280	335	12-18	350	12-22	355	12-26
300	78	230	738	380	420	395	12-22	400	12-22	410	12-26
350	78	248	761	380	420	445	12-22	460	16-22	470	16-26
400	102	289	877	450	470	495	16-22	515	16-26	525	16-30
450	114	320	938	480	490	550	16-22	565	20-26	585	20-30
500	127	343	993	480	490	600	20-22	620	20-26	650	20-33
600	154	413	1131	480	490	705	20-26	725	20-30	770	20-36
700	165	478	1476	640	660	810	24-26	840	24-30	840	24-36
800	190	525	1533	640	660	920	24-30	950	24-33	950	24-39
900	203	585	1655	750	860	1020	24-30	1050	28-33	1050	38-39
1000	216	640	1765	850	900	1120	28-30	1160	28-36	1170	28-42
1200	254	755	1995	850	900	1340	32-33	1380	32-39	1390	32-48