Lug Type Triple Offset Butterfly Valve

Size Range: NPS 2"~NPS 136" (DN50~DN3400）
Rating: Class 150~Class900 (PN10~PN150)
Body Material: Carbon Steel, Stainless Steel, Alloy Steel, Duplex stainless steel etc.
Disc Sealing: Metal to metal, Graphite Laminated, PTFE
Design Standard: API609, EN593
Face to Face Standards: S5155, ISO5752, DIN3352, AWWA C504 and other standards conforming to the requirements
Flange Standards: BS4504, ISO2531, ISO7005 and other standards conforming to the requirements
End Connection: Lug
Operation: Handwheel, Worm Gear, Electric, Pneumatic, Hydraulic
Suitable Medium: Water, Oil, Gas, Steam etc.

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Details

Our products now cover a wide range of standardized fluid control products that can be adapted to a variety of drive modes, comprising ball valves, butterfly valves, gate valves, globe valves, check valves, safety valves, rotary ball valves, plunger valves etc. Our products are widely used in water conservancy, municipal, electric power, gas, petrochemical, coal chemical, energy, environmental protection, medicine, real estate, metallurgy, mining and many other fields.

Design Features of Lug Type Triple Offset Butterfly Valve

Triple Eccentric Structure
Unique triple eccentric design eliminates seal friction during opening and closing, ensuring smooth movement.
Superior Bubble-Tight Sealing
Metal-to-metal torque sealing delivers zero leakage per API 598. Bi-directional tight shutoff for flexible flow direction.
Versatile Lug Connection
Standard integral lugs enable easy installation. Compatible with double-flange and single-end pipeline mounting.
Low Operation Torque
Friction-free design cuts operating torque remarkably, allowing matching with compact actuators for cost savings.
Extended Service Lifespan
Hardened seal options resist wear, high temperature and corrosion. Robust stem-disc connection prevents component failure.
Compact & Lightweight
Streamlined construction saves space, facilitating transportation and on-site maintenance.
Broad Working Adaptability
Stable performance under high temperature & high pressure. Ideal for steam, oil, gas and water in multiple industrial sectors.

Drawings and Main Dimensions

Main Dimensions per ASME 16.5
Diameter		150Lb			300Lb			600Lb
Inch	mm	L1	D1	Z-Md	L1	D1	Z-Md	L1	D1	Z-Md
2	50	43	120.7	4-Φ19	43	127	4-(M5/8"-UNC11)	43	127	4-(M5/8"-UNC11)
2.5	65	46	139.7	4-Φ19	46	149.2	4-(M3/4"-UNC10)	46	149.2	4-(M3/4"-UNC10)
3	80	48	152.4	4-Φ19	48	168.3	4-(M3/4"-UNC10)	54	168.3	4-(M3/4"-UNC10)
4	100	54	190.5	4-Φ19	54	200	4-(M3/4"-UNC10)	64	215.9	4-(M7/8"-UNC9)
5	125	57	215.9	4-Φ22	59	235	4-(M3/4"-UNC10)	78	266.7	4-(M1"-UN8)
6	150	57	241.3	4-Φ22	59	269.9	4-(M3/4"-UNC10)	78	292.1	4-(M1"-UN8)
8	200	64	298.5	4-Φ22	73	330.2	4-(M7/8"-UNC9)	102	349.2	4-(M1⅛"-UN8)
10	250	71	362	4-Φ25	83	387.4	4-(M1"-UN8)	117	431.8	4-(M1¼"-UN8)
12	300	81	431.8	4-Φ25	92	450.8	4-(M1⅛"-UN8)	140	489	4-(M1¼"-UN8)
14	350	92	476.3	4-Φ29	117	514.4	4-(M1⅛"-UN8)	155	527	4-(M1⅜"-UN8)
16	400	102	539.8	4-(M1"-UN8)	133	571.5	4-(M1¼"-UN8)	178	603.2	4-(M1½"-UN8)
18	450	114	577.9	4-(M1⅛"-UN8)	149	628.6	4-(M1¼"-UN8)	200	654	4-(M1⅝"-UN8)
20	500	127	635	4-(M1⅛"-UN8)	159	685.8	4-(M1¼"-UN8)	216	723.9	4-(M1⅝"-UN8)
24	600	154	749.3	4-(M1¼"-UN8)	181	812.8	4-(M1½"-UN8)	232	838.2	4-(M1⅞"-UN8)

Main Dimensions per ASME B16.47 Series A
Diameter		150Lb			300Lb			600Lb
Inch	mm	L1	D1	Z-Md	L1	D1	Z-Md	L1	D1	Z-Md
26	650	165	806.4	4-(M1¼"-UN8)	229	876.3	4-(M1⅝"-UN8)	229	914.4	8-(M1¼"-UN8)
28	700	165	863.6	4-(M1¼"-UN8)	229	939.8	4-(M1⅝"-UN8)	229	965.2	8-(M2"-UN8)
30	750	190	914.4	4-(M1¼"-UN8)	241	997	4-(M1¾"-UN8)	241	1022.4	8-(M2"-UN8)
32	800	190	977.9	4-(M1½"-UN8)	241	1054.1	4-(M1⅞"-UN8)	241	1079.5	8-(M2¼"-UN8)
36	900	203	1085.8	4-(M1½"-UN8)	241	1168.4	8-(M2"-UN8)	241	1193.8	8-(M2½"-UN8)
40	1000	216	1200.2	4-(M1½"-UN8)	330	1155.7	8-(M1⅞"-UN8)	330	1212.8	8-(M2¼"-UN8)
44	1100	254	1314.4	4-(M1½"-UN8)	360	1263.6	8-(M1¾"-UN8)	360	1333.5	8-(M2½"-UN8)
48	1200	254	1422.4	4-(M1½"-UN8)	360	1371.6	8-(M1⅞"-UN8)	360	1460.5	8-(M2¾"-UN8)
52	1300	279	1536.7	4-(M1¾"-UN8)	390	1479.6	8-(M2"-UN8)	390	1574.8	8-(M3"-UN8)
56	1400	279	1651	4-(M1¾"-UN8)	390	1600.2	8-(M1¼"-UN8)	390	1695.4	8-(M3¼"-UN8)
60	1500	318	1759	4-(M1¾"-UN8)	440	1701.8	8-(M1⅞"-UN8)	440	1822.4	8-(M3½"-UN8)

Main Dimensions per ASME B16.47 Series B
Diameter		150Lb			300Lb			600Lb
Inch	mm	L1	D1	Z-Md	L1	D1	Z-Md	L1	D1	Z-Md
26	650	165	744.5	4-(M3/4"-UNC10)	229	803.3	8-(M1¼"-UN8)	229	806.4	8-(M1⅜"-UN8)
28	700	165	795.3	4-(M3/4"-UNC10)	229	857.2	8-(M1¼"-UN8)	229	863.6	8-(M1⅜"-UN8)
30	750	190	846.1	4-(M3/4"-UNC10)	241	920.8	8-(M1⅜"-UN8)	241	927.1	8-(M1⅞"-UN8)
32	800	190	900.1	8-(M3/4"-UNC10)	241	977.9	8-(M1½"-UN8)	241	984.2	8-(M2"-UN8)
36	900	203	1009.6	8-(M7/8"-UNC9)	241	1089	8-(M1⅝"-UN8)	241	1104.9	8-(M2¼"-UN8)
40	1000	216	1120.8	8-(M1"-UN8)	330	1190.6	8-(M1⅝"-UN8)
44	1100	254	1222.4	8-(M1"-UN8)	360	1295.4	8-(M1¾"-UN8)
48	1200	254	1335.1	8-(M1⅛"-UN8)	360	1416	8-(M1⅞"-UN8)
52	1300	279	1436.7	8-(M1⅛"-UN8)	390	1517.6	8-(M1⅞"-UN8)
56	1400	279	1543	8-(M1⅜"-UN8)	390	1651	8-(M2¼"-UN8)
60	1500	318	1662.1	8-(M1⅜"-UN8)	440	1763.7	8-(M2¼"-UN8)