Double eccentric butterfly valve

WESDOM double eccentric butterfly valves with tilted disc are designed for easy operation and long service life. The disc seal is made of WESDOM’s drinking water approved EPDM rubber featuring an excellent compression set and ability to regain the original shape. The high quality epoxy coating and fully encapsulated shaft/disc connection ensure optimal corrosion protection and durability.

Double eccentricbutterfly valve Product description:

Flange butterfly valve, mounting between flanges PN10/PN16/A150, with gear box.

The range of WESDOM valves can be used for overground installation, in valve chambers and buried systems.butterfly valves in a range of DN 150 to 2000 mm and PN 10, 16 and 25 bar have been designed to isolate the flow of fluid in:

①potable water supply pipelines and treatment plants.

②transportation of filtered and recycled water.

③irrigation distribution networks.

④water-pumping stations and hydroelectric plants.

⑤reservoirs.

Features：

①Double eccentric design releases seal compression after only few degrees of opening resulting in low operating torque

②Disc firmly fixed to the shaft to prevent fluttering and a slight tilt allows for precise adjustment of the closed position

③Disc seal profile and rubber quality ensure low closing torque

④All rubber parts drinking water approved by multiple institutes

⑤Fasteners in stainless steel, A2

⑥Stainless steel shaft

Machined and epoxy coated ductile iron seat integrated in the body

⑦All threaded connections are sealed with O-rings for protection against medium and environment

Radial bearings in self-lubricating PTFE/bronze composite

⑧Shaft ends fully encapsulated in the disc and fixed with O-ring sealed dowels held in place with a security plate. Key and keyway as backup

⑨Replaceable shaft seals with two EPDM O-rings; gaskets to the exterior in hydrocarbon resistant NBR

⑩Coated with blue RAL 5017 FBE to DIN 3476, GSK and approved by WRAS-DVGW/W270/UBA, 250µm

Double eccentric butterfly valve Standard:

Design and Manufacture Conform to EN 593, API609,  JIS

Flange dimensions Conform to EN 1092-2 PN10, PN16, JIS5K, JIS10K,ANSI B16.1,DIN2501,BS4504

Face to Face dimensions Conform to EN558 series

Top Flange dimensions Conform to ISO5211

Testing Conform to API598、EN12266-1

Standard：

Body Test:  1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.

Seat Test:  1.1 times the working pressure with water.

Special Test: On request, any other test can be carried out according to special instruction by client.

 

1	2	3	4	5	6
Key	Valve shaft	Seal housing	O-ring	O-ring	Radial bearing
Stainless steel A2	Stainless steel AISI 420	Bronze	EPDM rubber	EPDM rubber	Bronze/PTFE composite
7	8	9	10	11	12
Disc cover	Disc cover gasket	O-ring	Dowel	O-ring	Plug
Stainless steel	EPDM rubber	EPDM rubber	Stainless steel A2	EPDM rubber	Steel
13	14	15	16	17	18
Body	Disc	Security plate	Screw	O-ring	Spring washer
Ductile iron GJS-500-7	Ductile iron GJS-500-7	Stainless steel	Stainless steel A2	EPDM rubber	Stainless steel A2
19	20	21	22	23	24
Washer	O-ring	Nut	Washer	Screw	Screw
Zinc	EPDM rubber	Stainless steel A2	Stainless steel A2	Stainless steel A2	Stainless steel A2
25	26	27	28	29	30
Thrust bearing	Screw	End plate	Gasket	Shaft, stub	Safety key
Bronze	Stainless steel A2	Ductile iron GJS-500-7	EPDM rubber	Stainless steel AISI 420	Stainless steel A2
31	32	33	34	35	36
Screw	Screw	O-ring	Bolt	Washer	O-ring
Stainless steel A2	Stainless steel A2	EPDM rubber	Stainless steel A2	Stainless steel A2	EPDM rubber

 

The range of WESDOM valves can be used for overground installation, in valve chambers and buried systems. It includes a full range of operating accessories and actuators.

WESDOM valves are installed all over the Asia,Africa continent, the Middle East and throughout Europe. They have justifiably acquired a faultless reputation for their durability, reliability and quality worldwide.

DN	L	PN6/PN10/PN16						PN6
		H1	H2	H3	L1	L2	L3	D	D1	d	n-do
100	127	310	109	242	52	45	210	210	170	144	4–19
150	140	440	143	340	52	45	210	265	225	199	8–19
200	152	510	182	410	77	63	315	320	320	254	8–19
250	165	565	219	445	77	63	315	375	375	309	12–19
300	175	630	244	482	95	72	242	440	440	369	12–23
350	190	715	283	565	110	91	275	490	490	413	12–23
400	216	750	312	600	220	91	275	540	540	463	16–23
450	222	820	344	670	147	147	420	595	595	518	16–23
500	229	845	381	695	147	147	420	645	645	568	20–23
600	267	950	451	780	533	179	476	755	755	667	20–26

 

Tanzania Water Project

Main products:

Gate Valves, Butterfly Valves, Check Valves, Pipe Fittings, etc.

Client feedback:

The customer sent us the installation pictures of the WESDOM product in the working condition project, and the feedback quality is very good, and will maintain a long-term cooperative relationship with WESDOM;

Project pictures:

 

①potable water supply pipelines and treatment plants.

②transportation of filtered and recycled water.

③irrigation distribution networks.

④water-pumping stations and hydroelectric plants.

⑤nuclear industry, fire safety and storage facilities.