DN500 Worm Gear Vulcanized Seat No Pin Double Flanged Butterfly Valve

Size Range: DN500

Pressure Rating: PN16

Body: Ductile Iron(GGG50)

Disc: DI(Ni lined)

Seat: Rubber(EPDM)

Actuator Options: Worm Gear

Sample: available

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Description

Basic Info of Vulcanized Double Flanged Butterfly Valve

Vulcanized double flanged butterfly valve seat: A special manufacturing process is adopted, in which the rubber and the double flanged valve body are integrated through high-temperature vulcanization. This method makes the valve seat and valve body tightly combined and difficult to separate.
No Pin type：protect the stem and disc from corrossion of flow.
Efficient Flow Control: This valve is designed to quickly and effectively control the flow of fluid when opening and closing. The butterfly plate inside the valve can rotate 90 degrees to fully open or close the valve. This design provides lower flow resistance, allowing for higher flow rates and more efficient fluid control.
Simple Installation: The Flanged Butterfly Valve features a double flange design that can be easily installed between flanged pipe connections. This design makes installation of the valve easier and faster.
Compliant with global standards,
Certified by international quality standards such as WRAS, CE, and ISO 9001, etc.

Material Options of Flanged Butterfly Valve Parts

Parts	Ductile Iron type	WCB type	Stainless Steel Type	Duplex Stainless Steel Type
Body	Cast Iron(GG25) Ductile Iron(GGG40/50)	A216 A217 A105(forged)	SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M	2205 2507 1.4529
Disc	Ductile Iron with Ni coated Ductile Iron with nylon coated Ductile Iron with PTFE/EPDM lined Stainless Steel Duplex Stainless Steel Bronze		SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M 2205 2507 1.4529	2205 2507 1.4529
Seat	NBR, EPDM, PTFE, Viton, Hypalon, Silicon, PFA
Stem	SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel			Duplex Stainless Steel, Monel
Actuator	Hand Lever, Worm Gear, Electric, Pneumatic

Double Flanged Butterfly Valve Standards

ITEM	Standard
Nominal Diameter Range	DN50-DN2000
Design	EN593 \| API609
Face to Face	EN558 \| ISO5752 \| API608 \| BS5155-4
Top Flange	ISO5211
Flange Drilling	PN6 \| PN10 \| PN16 \| ASME B16.5 CL150 \| JIS 10K
Pressure Rating	PN6 \| PN10 \| PN16 \| PN25 \| CL150 \| JIS 10K
Tightness Test	ISO5208 \| API598 \| EN12266-1

Parameters of Vulcanized Flanged Butterfly Valve

SIZE	L	øD1	f	H1	H2	ø2	ø3	n-ød1	T*T	H	øF	K	KEY
DN50	108	52.6	3	139	80	70	90	4-10	11	30	——	——	——
DN65	112	64.3	3	146	89	70	90	4-10	11	30	——	——	——
DN80	114	78.8	3	150	95	70	90	4-10	11	30	——	——	——
DN100	127	104.0	3	177	114	70	90	4-10	11	30	——	——	——
DN125	140	123.3	3	179	125	70	90	4-10	14	30	——	——	——
DN150	140	155.7	3	201	139	70	90	4-10	14	30	——	——	——
DN200	152	202.4	3	230	170	102	125	4-12	17	40	——	——	——
DN250	165	250.4	3	267	198	102	125	4-12	22	40	——	——	——
DN300	178	301.5	4	298	223	102	125	4-12	22	45	——	——	——
DN350	190	333.3	4	310	254	125	150	4-14	22	45	——	——	——
DN400	216	389.6	4	340	278	140	175	4-18	27	50	——	——	——
DN450	222	440.5	4	375	315	140	175	4-18	27	50	——	——	——
DN500	229	491.6	4	430	348	140	175	4-18	36	50	——	——	——
DN600	267	592.5	5	500	410	165	210	4-22	36	60	——	——	——
DN700	292	695.0	5	560	480	254	300	8-18	——	80	63.35	72.15	18*70
DN800	318	794.7	5	620	530	254	300	8-18	——	80	63.35	72.15	18*70
DN900	330	864.7	5	685	605	254	300	8-18	——	100	75	84.80	20﹡90
DN1000	410	965.0	5	735	670	254	300	8-18	——	100	85	95.80	22﹡90
DN1200	470	1160.6	5	917	780	298	350	8-22	——	100	105	117.80	28*90

Manufacture Process of ZFA Vulcanized BFV Valve

√. Water Supply and Drainage Engineering

Potable water supply and distribution networks: A combination of an EPDM seat and a ductile iron disc serves as the standard configuration for water supply and drainage systems. Additionally, the rubber seat is securely bonded to the valve body to prevent displacement caused by fluid erosion, ensuring long-term, zero-leakage operation.

√. Industrial Cooling and HVAC Systems

Large-scale central air conditioning water systems: Used for isolation and flow regulation in chilled and cooling water networks; capable of withstanding the impact of high-velocity flow.