Your Trusted Control Valve Manufacturer & Supplier

Worm Gear Triple Offset Butterfly Valve

Size Range:DN50-DN800

Material: Carbon Steel, Stainless Steel

Connection Options:Flanged

Working Pressure:Up to 300 psi (20.7 bar)

Working Temperature:-29°C to 200°C

Sealing Options:304＋Flexible graphite+PTFE

Manufacturing Method:Cast, Forged, Machined

Applicable Medium:Water, Oil, Gas, Air, Chemical Fluids

Manufacturing Standard:API 609, GB / T 12238-2008

Product Overview

The Worm Gear Triple Offset Butterfly Valve is a high-performance valve designed for applications requiring tight shutoff, durability, and efficient flow control. Its triple-offset design minimizes wear, ensures reliable sealing, and reduces torque requirements, making it ideal for high-temperature and high-pressure environments. The worm gear mechanism provides precise manual control, allowing for smooth, incremental adjustments. Constructed with durable materials, this valve is suited for industrial sectors such as oil & gas, chemical processing, and power generation, where safety and efficiency are paramount.

Product Features

Quick Operation: Butterfly valves can be opened or closed quickly, often using a lever or actuator, allowing efficient flow control. This is particularly beneficial in industries like HVAC systems, fire protection systems, and chemical processing, where rapid flow adjustments are essential.

Low-Pressure Drop: The streamlined disc design ensures minimal resistance to flow, reducing pressure drop across the valve.

Compact and Lightweight: Butterfly valves are smaller and lighter compared to other types of valves, making them easy to install and maintain.

Versatile Connection Options: Available in wafer, lug, flanged, double flanged, and grooved connections to accommodate a wide range of piping configurations.

Resilient or Metal Seat Options: Offers both soft seats (e.g., EPDM, PTFE) for low-pressure applications and metal seats for higher temperatures and pressures.

Manual or Actuated Operation: Can be operated manually using a lever or automated with electric, pneumatic, or hydraulic actuators.

Specification Parameters

Main performance specifications

Nominal diameter	DN（mm）	50-800
Nominal pressure	PN（MPa)	1.0	1.6	2.5
test pressure	Strength test	1.5	2.4	3.75
	Seal test	1.1	1.76	2.75
	Gas seal test	0.6	0.6	0.6

Product parts materials

model		D343H-16	D343W-16P	D343W-16R
Work pressure（MPa）		1.6
Suitable temperature（℃）		≤425	≤200
Suitable media		Water, oil or non-corrosive media	Nitric acid medium	Acetic acid medium
material	Body, disc	WCB	CF8/304	CF3M/316L
	Valve stem	2Cr13	304	316L
	Valve stem	Surfacing507	－	－
	Butterfly sealing surface	304＋Flexible graphite	304＋PTFE	304＋PTFE
	filler	Flexible graphite	PTFE	PTFE

Main Connection Dimensions

PN	DN	L	D	D1	D2	n–Φd	b	f	H	H₀	A	B	Weight (kg)
1.6 MPa	50	108	165	125	99	4–18	20	2	170	130	45	120	7
	65	112	185	145	118	4–18	20	2	170	145	45	120	9.2
	80	114	200	160	132	8–18	20	2	230	152	45	120	11.6
	100	127	220	180	156	8–18	22	2	320	192	45	120	14
	125	140	250	210	184	8–18	22	2	345	200	45	120	18
	150	140	285	240	211	8–22	24	2	385	230	66	150	23
	200	152	340	295	266	12–22	24	2	471	297	85	170	44
	250	165	405	355	319	12–26	26	2	533	327	85	170	64
	300	178	460	410	370	12–26	28	2	694	364	106	205	105
	350	190	520	470	429	16–26	30	2	606	404	106	205	134
	400	216	580	525	480	16–30	32	2	757	444	130	240	181
	450	222	640	585	548	20–30	40	2	814	472	155	240	237
	500	229	715	650	609	20–33	44	2	902	522	169	306	292
	600	267	840	770	720	20–36	54	2	1048	590	198	324	421
	700	292	910	840	794	24–36	40	5	1277	810	220	335	541
	800	318	1025	950	901	24–39	42	5	1385	844	241	356	658
	900	330	1125	1050	1001	28–39	44	5	1490	890	241	356	790
	1000	410	1225	1170	1112	28–42	46	5	1620	950	241	356	890
PN	DN	L	D	D1	D2	n–Φd	b	f	H	H₀	A	B	Weight (kg)
2.5 MPa	50	108	165	125	99	4–18	20	2	170	130	45	120	13
	65	112	185	145	118	8–18	22	2	265	210	35	90	15
	80	114	200	160	132	8–18	24	2	310	233	35	90	19
	100	127	235	190	156	8–22	24	2	343	242	45	120	23
	125	140	270	220	184	8–26	26	2	385	254	45	120	46
	150	140	300	250	211	8–26	28	2	445	580	66	150	66
	200	152	360	310	274	12–26	30	2	510	297	85	170	107
	250	165	425	370	330	12–30	32	2	569	339	85	170	136
	300	178	485	430	389	16–30	34	2	653	375	106	205	185
	350	190	555	490	448	16–33	38	2	730	420	106	205	240
	400	216	620	560	503	16–36	40	2	810	463	130	240	294
	450	222	670	600	548	20–36	46	2	850	495	155	240	423
	500	229	730	660	609	20–36	48	2	940	566	169	306	546
	600	267	845	770	720	20–39	58	2	1150	630	198	324	660
	700	292	960	875	824	24–42	50	5	1195	727	220	335	795
	800	318	1085	990	609	20–36	54	5	1268	810	45	356	894
PN	DN	L	D	D1	D2	n–Φd	b	f	H	H₀	A	B	Weight (kg)
4.0 MPa	50	108	165	125	99	4–18	20	2	170	130	35	120	13
	65	112	185	145	118	8–18	22	2	265	210	35	90	15
	80	114	200	160	132	8–18	20	2	310	233	35	90	19
	100	127	235	190	156	8–22	24	2	343	242	45	120	25
	125	140	270	220	184	8–26	26	2	385	254	45	120	46
	150	140	300	250	211	8–26	28	2	445	280	66	150	67
	200	152	375	320	284	12–30	34	2	510	297	85	170	109
	250	165	450	385	345	12–33	38	2	569	339	85	170	138
	300	178	515	450	409	16–33	42	2	653	375	106	205	186
	350	190	580	510	465	16–36	46	2	730	420	106	205	241
	400	216	660	585	533	16–39	50	2	810	463	130	240	295
	450	222	685	610	560	20–39	57	2	850	495	155	240	424
	500	229	755	670	615	20–42	57	2	940	566	169	306	547
	600	267	890	795	735	20–48	72	2	1150	630	198	324	662
	700	292	995	875	835	24–54	68	5	1195	727	220	335	797
	800	318	1035	1030	960	24–58	76	5	1268	810	241	356	898

Specification Applications

Oil & Gas Industry: Used in pipelines, refineries, and offshore platforms for controlling flow in high-pressure and high-temperature environments.
Chemical Processing: Ideal for handling corrosive and hazardous fluids, providing tight sealing and protection against leakage.
Power Generation: Employed in power plants for steam, gas, and water control, especially in high-temperature and high-pressure systems.
Water Treatment: Applied in desalination plants and wastewater treatment facilities where reliable sealing is essential for preventing contamination.
Petrochemical Industry: Used for isolating and controlling various hydrocarbons in processing and storage.
Marine and Shipbuilding: Installed in ballast and bilge systems, seawater intake, and cooling systems for corrosion-resistant and durable performance.
Pulp and Paper: Effective in managing slurry and pulp flows where sealing integrity is critical due to abrasive particles.

Downloads

Product Selection Guide

Multi-Layer Metallic Hard-Sealing Butterfly Valve

DownloadEnglish

Worm Gear Triple Offset Butterfly Valve

Product Overview

Product Features

Specification Parameters

Main performance specifications

Product parts materials

Main Connection Dimensions

Specification Applications

Downloads

Features

Resources

Links

Contact info