Triple Eccentric Flanged Butterfly Valve

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Triple Eccentric Flanged Butterfly Valve

Carbon Steel (WCB, WCC for strength), Stainless Steel (SS304, SS316 for corrosion resistance)

Size Range:2″ to 48″ (DN50-DN1200)

Connection Options:Flanged

Working Pressure:Up to 300 psi (20.7 bar)

Working Temperature:-29°C to 200°C

Sealing Options:EPDM, PTFE, Metal-to-Metal, NBR, FKM

Manufacturing Method:Cast, Forged, Machined

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

Manufacturing Standard:API 609, ASME B16.47, MSS-SP-67, BS EN 593, ISO 5752

Product Overview

Butterfly valves regulate or isolate fluid flow in pipelines, making them ideal for situations requiring quick shutoff, low pressure drop, and easy operation. The butterfly valve operates with a rotating disc that allows for on/off or modulating service. Constructed from high-quality materials, including carbon steel, stainless steel, these valves are known for their durability, corrosion resistance, and suitability for various industrial applications.

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

Structural Length Standard:
According to API 609, ASME B16.47, ISO 5752, BS EN 558

Connection Forms Standards:
Wafer and lug types per ASME B16.5, flanged per ANSI/ASME B16.42, double flanged, and grooved

Available Sizes (Caliber):
2″, 3″, 4″, 6″, 8″, 10″, 12″, 14″, 16″, 18″, 20″, 24″, 30″, 36″, 42″, 48″

Pressure-Temperature Rating:
Class 150, 300 as per API 609 and ASME B16.47

Pressure Range:
Up to 300 psi depending on size and material

Temperature Range:
-29°C to 200°C depending on material and sealing options

Main performance specifications

Nominal diameter	DN（mm）	50-4000
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

The main shape and connection dimensions

PN	DN	L	D	D1	D2	Z-d	b	f	H	H0
1.0	50	108	165	125	99	4-18	20	2	170	130
1.0	65	112	185	145	118	4-18	20	2	170	145
1.0	80	114	200	160	132	8-18	20	2	230	152
1.0	100	127	220	180	156	8-18	22	2	320	192
1.0	125	140	250	210	184	8-18	22	2	345	200
1.0	150	140	285	240	211	8-22	24	2	385	230
1.0	200	152	340	295	266	8-22	24	2	471	297
1.0	250	165	405	355	319	12-22	26	2	533	327
1.0	300	178	445	400	370	12-22	26	2	606	364
1.0	350	190	505	460	429	16-22	26	2	694	404
1.0	400	216	565	515	480	16-26	26	2	757	444
1.0	450	222	615	565	530	20-26	28	2	814	472
1.0	500	229	670	620	582	20-26	28	2	902	522
1.0	600	267	780	725	682	20-30	34	2	1048	590
1.0	700	292	895	840	794	24-30	34	5	1277	810
1.0	800	318	1015	950	901	24-33	36	5	1385	844
1.0	900	330	1115	1050	1001	28-33	38	5	1490	890
1.0	1000	410	1230	1160	1112	28-36	38	5	1620	950
1.6	50	108	165	125	99	4-18	20	2	170	130
1.6	65	112	185	145	118	4-18	20	2	170	145
1.6	80	114	200	160	132	8-18	20	2	230	152
1.6	100	127	220	180	156	8-18	22	2	320	192
1.6	125	140	250	210	184	8-18	22	2	345	200
1.6	150	140	285	240	211	8-22	24	2	385	230
1.6	200	152	340	295	266	12-22	24	2	471	297
1.6	250	165	405	355	319	12-26	26	2	533	327
1.6	300	178	460	410	370	12-26	28	2	606	364
1.6	350	190	520	470	429	16-26	30	2	694	404
1.6	400	216	580	525	480	16-30	32	2	757	444
1.6	450	222	640	585	548	20-30	40	2	814	472
1.6	500	229	715	650	609	20-33	44	2	902	522
1.6	600	267	840	770	720	20-36	54	2	1048	590
1.6	700	292	910	840	794	24-36	40	5	1277	810
1.6	800	318	1025	950	901	24-39	42	5	1385	844
1.6	900	330	1125	1050	1001	28-39	44	5	1490	890
1.6	1000	410	1225	1170	1112	28-42	46	5	1620	950
2.5	50	108	165	125	99	4-18	20	2	170	130
2.5	65	112	185	145	118	8-18	22	2	265	210
2.5	80	114	200	160	132	8-18	24	2	310	233
2.5	100	127	235	190	156	8-22	24	2	343	242
2.5	125	140	270	220	184	8-26	26	2	385	254
2.5	150	140	300	250	211	8-26	28	2	445	580
2.5	200	152	360	310	274	12-26	30	2	510	297
2.5	250	165	425	370	330	12-30	32	2	569	339
2.5	300	178	485	430	389	16-30	34	2	653	375
2.5	350	190	555	490	448	16-33	38	2	730	420
2.5	400	216	620	550	503	16-36	40	2	810	463
2.5	450	222	670	600	548	20-36	46	2	850	495
2.5	500	229	730	660	609	20-36	48	2	940	566
2.5	600	267	845	770	720	20-39	58	2	1150	630
2.5	700	292	960	875	820	24-42	58	5	1195	727
2.5	800	318	1085	990	609	24-36	58	5	1268	810

Specification Applications

Industries

Water Treatment Plants: Used in water distribution and control systems for potable and wastewater treatment.
Oil & Gas Industry: Suitable for regulating the flow of crude oil, natural gas, and refined products.
Chemical Industry: Ideal for controlling the flow of chemicals, acids, and other aggressive fluids.
HVAC Systems: Commonly used in heating, ventilation, and air conditioning systems for regulating air or water flow.
Food & Beverage Industry: Suitable for sanitary and non-sanitary applications that require frequent operation and cleaning, thanks to corrosion-resistant materials and ease of cleaning.

Specific Applications

Cooling Water Systems: Controls the flow of water for cooling applications in industrial facilities.
Fire Protection Systems: Used in fire sprinkler systems as control valves to regulate water supply.
Process Pipelines: Ideal for modulating or isolating flow in pipelines carrying oil, gas, or chemicals.
Air Flow Regulation: Used in HVAC systems to regulate air flow, ensuring efficient operation of heating and cooling units.

Installation Instructions

Verify the valve size, pressure rating, and material compatibility with the pipeline and medium before installation.
Ensure proper alignment of the butterfly valve in the pipeline to avoid seat or disc damage.
Use appropriate flange gaskets and follow standard torque tightening procedures for flanged connections.
For wafer or lug connections, ensure correct bolt alignment to avoid stress on the valve body.
Test the valve for proper operation to ensure the disc moves freely without obstruction. If the disc does not move freely, check for proper alignment and inspect for debris that may be causing the obstruction. If issues persist, further troubleshoot by adjusting alignment or cleaning the valve thoroughly to remove any contaminants.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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