Your Trusted Partner for High-Quality Valve Solutions

Worm Gear Flanged Butterfly Valve

Home » Products » Worm Gear Flanged Butterfly Valve

Worm Gear Flanged Butterfly Valve

Size Range: 2″ to 48″ (DN50-DN1200)

Material: Carbon Steel, Stainless Steel

Connection Options: Flanged

Working Pressure:Up to 300 psi (20.7 bar)

Working Temperature: -29°C to 425°C

Sealing Options: EPDM, PTFE, NBR, FKM

Manufacturing Method: Cast, Forged, Machined

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

Manufacturing Standard: API 609, ASME B16.47, BS EN 593, ISO 5752

Product Overview

A worm gear flanged butterfly valve is designed for precise, low-torque flow control in medium to large pipelines. The worm gear drive ensures smooth operation, while the flanged body provides strong, leak-resistant connections. It is widely used in water treatment, HVAC, power, and industrial piping systems where reliable and controlled valve operation is required.

Product Features

Worm gear operation ensures smooth, low-torque control for medium and large diameters
Flanged end design provides strong, leak-resistant pipeline connection
High-strength valve body suitable for high-pressure and heavy-duty service
Excellent shut-off performance with stable disc positioning
Long service life with reduced wear and reliable operation
Ideal for manual control in water, oil, gas, steam, and industrial pipelines

Specification Parameters

ITEM	PN 0.6	PN 1.0	PN 1.6	PN 2.5	PN 4.0
Nominal Size DN (mm)	50–2000	50–2000	50–2000	50–2000	50–500
Nominal Pressure (MPa)	0.6	1.0	1.6	2.5	4.0
Strength Test Pressure (MPa)	0.9	1.5	2.4	3.75	6.0
Seal Test Pressure (MPa)	0.66	1.1	1.76	2.75	4.4
Gas Seal Test Pressure (MPa)	0.6	0.6	0.6	0.6	0.6
Leakage	< 0.1 × DN mm³/s (GB/T 13927-92)
Suitable Temperature	−29 ~ 425°C (Carbon steel) / −40 ~ 550°C (SS / Cr-Mo)
Applicable Medium	Air, water, steam, gas, oil, acid, alkali, salt with weak corrosive media
Drive Type	Worm gear / Electric

Standard

ITEM	STANDARD
Manufacturing Standard	JB/T 8527-97
Flange Standard	GB 9113
Face-to-Face Standard	GB 12221-89
Test Standard	GB/T 13927-92

Main Components Material:

PART NAME	MATERIAL
Body	Carbon steel, stainless steel, chrome molybdenum steel, alloy steel
Disc	Carbon steel, alloy steel, stainless steel, chrome molybdenum steel
Seat Ring	Stainless steel and high-temperature asbestos combined into multi-layer
Stem	2Cr13, 1Cr13 stainless steel, chrome molybdenum steel
Bearing	Austenitic stainless steel, 304 nitrided
Packing	Flexible graphite

D343H.Y.F-10~16C.P.R.I

Main Connection Dimensions:

(GB)PN1.0MPa
DN	L	D	D1	D2	b	f	Z-фd	H
50	108	165	125	102	18	3	4-ф18	195
65	112	185	145	122	18	3	8-ф18	215
80	114	200	160	138	20	3	8-ф18	215
100	127	220	180	158	20	3	8-ф18	235
125	140	250	210	188	22	3	8-ф18	290
150	140	285	240	212	22	3	8-ф22	310
200	152	340	295	268	24	3	8-ф22	360
250	165	395	350	320	26	3	12-ф22	395
300	178	445	400	370	26	4	12-ф22	425
350	190	505	460	430	26	4	16-ф22	475
400	216	565	515	482	26	4	16-ф26	520
450	222	615	565	532	28	4	20-ф26	550
500	229	670	620	585	28	4	20-ф26	610
600	267	780	725	685	34	5	20-ф30	655
700	292	895	840	800	34	5	24-ф30	725
800	318	1015	950	905	36	5	24-ф33	795
900	330	1115	1050	1005	38	5	28-ф33	885
1000	410	1230	1160	1110	38	5	28-ф36	950
1200	470	1455	1380	1330	44	5	32-ф39	1125
1400	530	1675	1590	1535	48	5	36-ф42	1275
1600	600	1915	1820	1760	52	5	40-ф48	1470
1800	670	2115	2020	1960	56	5	44-ф48	1585
2000	760	2325	2230	2170	60	5	48-ф48	1720
(GB)PN1.6MPa
DN	L	D	D1	D2	b	f	Z-фd	H
50	108	165	125	102	18	3	4-ф18	195
65	112	185	145	122	18	3	8-ф18	215
80	114	200	160	138	20	3	8-ф18	215
100	127	220	180	158	20	3	8-ф18	235
125	140	250	210	188	22	3	8-ф18	290
150	140	285	240	212	22	3	8-ф22	310
200	152	340	295	268	24	3	12-ф22	360
250	165	405	355	320	26	3	12-ф26	395
300	178	460	410	378	28	4	12-ф26	425
350	190	520	470	438	30	4	16-ф26	475
400	216	580	525	490	32	4	16-ф30	520
450	222	640	585	550	34	4	20-ф30	550
500	229	715	650	610	36	4	20-ф33	610
600	267	840	770	725	38	5	20-ф36	655
700	292	910	840	795	40	5	24-ф36	725
800	318	1025	950	900	42	5	24-ф39	795
900	330	1125	1050	1000	44	5	28-ф39	885
1000	410	1255	1170	1115	46	5	28-ф42	950
1200	470	1485	1390	1330	52	5	32-ф48	1125
1400	530	1685	1590	1530	58	5	36-ф48	1275
1600	600	1930	1820	1750	64	5	40-ф56	1470
1800	670	2130	2020	1950	68	5	44-ф56	1585
2000	760	2345	2230	2150	70	5	48-ф62	1720
(GB)PN2.5MPa
DN	L	D	D1	D2	b	f	Z-фd	H
50	108	165	125	102	20	3	4-ф18	195
65	112	185	145	122	22	3	8-ф18	215
80	114	200	160	138	24	3	8-ф18	215
100	127	235	190	162	24	3	8-ф22	235
125	140	270	220	188	26	3	8-ф26	290
150	140	300	250	218	28	3	8-ф26	310
200	152	360	310	278	30	3	12-ф26	370
250	165	425	370	335	32	3	12-ф30	397
300	178	485	430	395	34	4	16-ф30	455
350	190	555	490	450	38	4	16-ф33	495
400	216	620	550	505	40	4	16-ф36	535
450	222	670	600	555	46	4	20-ф36	560
500	229	730	660	615	48	4	20-ф36	620
600	267	845	770	720	50	5	20-ф39	685
700	292	960	875	820	54	5	24-ф42	750
800	318	1085	990	930	58	5	24-ф48	870
900	330	1185	1090	1030	60	5	28-ф48	965
1000	410	1320	1210	1140	62	5	28-ф56	1040
1200	470	1530	1420	1350	70	5	32-ф56	1180
1400	530	1755	1640	1560	76	5	36-ф62	1365
1600	600	1975	1860	1780	84	5	40-ф62	1580
(GB)PN4.0MPa
DN	L	D	D1	D2	b	f	Z-фd	H
50	150	165	125	102	20	3	4-ф18	195
65	170	185	145	122	22	3	8-ф18	210
80	180	200	160	138	24	3	8-ф18	230
100	190	235	190	162	24	3	8-ф22	250
125	200	270	220	188	26	3	8-ф26	295
150	210	300	250	218	28	3	8-ф26	340
200	230	375	320	285	34	3	12-ф30	390
250	250	450	385	345	38	3	12-ф33	485
300	270	515	450	310	42	4	16-ф33	490
350	290	580	510	465	46	4	16-ф36	540
400	310	660	585	535	50	4	16-ф39	620
450	330	685	610	560	57	4	20-ф39	645
500	350	755	670	615	57	4	20-ф42	670

Specification Applications

Water supply and wastewater treatment pipelines
Oil and gas transmission and distribution systems
Power plants for cooling water and auxiliary services
Chemical and petrochemical process lines
HVAC and district heating systems
Industrial pipelines requiring stable manual flow control for large diameters

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

Flow Control

Hard Seal Wafer Butterfly Valve

Fluorine-Lined Pneumatic Butterfly Valve

Flanged PTFE-Lined Butterfly Valve (Midline)

PTFE-Lined Wafer butterfly Valves (Middle)

Get In Touch

Discover our premium valve solutions and boost your efficiency. Contact
us now to find out how we can support your needs with top-quality
products and exceptional service.

Call Us On

0577—86938599

Email Us

[email protected]

Your Trusted Partner for High-Quality Valve Solutions

Worm Gear Flanged Butterfly Valve

Worm Gear Flanged Butterfly Valve

Product Overview

Product Features

Specification Parameters

Standard

Main Components Material:

D343H.Y.F-10~16C.P.R.I

Main Connection Dimensions:

Specification Applications

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

Flow Control

Related Products

Hard Seal Wafer Butterfly Valve

Fluorine-Lined Pneumatic Butterfly Valve

Flanged PTFE-Lined Butterfly Valve (Midline)

PTFE-Lined Wafer butterfly Valves (Middle)

Get In Touch

Call Us On

Email Us

Features

Resources

Links

Contact info