Butterfly valve

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SHANGHAI HUIXUAN VALVE

Mobile:+86-17717520739
Wechat:17717520739
Email：info@shxvalve.com
Address: NO.720, Suide Road, Jiading District,Shanghai, China.
Ball valve manufacturer

Lug type concentric butterfly valve

Port size：2″ to 24″,DN50-DN600
Pressure：PN10-16 bar,150LB,JIS 5K 10K
Structure：Concentric
Medium：Water,air,etc.
Temperature :-29～150℃
Body material：Cast iron,ductile iron,carbon steel,stainless steel,etc.
Connection：Lug type
Feature：Manual,electric,pneumatic actuator is optional

Product Description

Lug type concentric butterfly valve designed with threaded lugs outside the body. These threaded lugs are used to contain bolts used to connect the valve to the pipeline. Lug type concentric butterfly valve is installed into the piping system by placing it in between two pipe flanges. A tight seal is enhanced by mounting a gasket between the mating surfaces of the valve and the pipe plus the bolts. Two separate bolt sets are used on each end of the valve without the use of nuts. This design makes the Lug type concentric butterfly valve work as an isolation valve or makes it suitable for installation in the end-of-line service. Such design makes it easy to dismantle one end of the valve without disturbing the other end which helps to reduce downtime when doing repair and maintenance. Lug type concentric butterfly valve manufacturers design this type of valve with short lengths making it economical relative to other valves. Also, this short length helps the bolts to extend from one pipe flange to the other flange across the lug-style butterfly valve.

Lug type concentric butterfly valve feature
1: ISO5211 top flange together with stem square suitable for direct mounting of actuators
2: Stem anti-blowout design keep safety in field use
3: Dirtscraper prevents moisture penetrating into the shaft area
4:Multi-standard alignment holes suitable for various standard of flanges of EN1092 PN10, PN16, ASME B16.5 CLASS150, JIS B2239 10K, 16K, BS 10 Table D, Table E
5: Suitable for high pressure and full vacuum service due to the use of a cartridge seat design
6: No exposed pins or bolts for stem-to-disc connection
7: No need for flange gaskets
8: No risk of damage to the valve during installation in closed position
9: Bubble-tight shut of at full pressure rating
10: Large flow capacity and enough strength because of streamline disc design
11: Plug with O-ring sealing eliminates any leakage from the stem

Lug type concentric butterfly valve part list

NO.	Part name	Material
1	Body	ASTM A536 65-45-12, WCB, CF8M
2	Disc	ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
3	Seat	EPDM,NBR,FRM.PTFE
4	Stem	SS420,SS431
5	Lower Stem	SS420,SS431
6	Retainer	Nylon for DN50-DN300, SS304 for DN350-DN2000
7	Bearing	RPTFE with Graphite on I.D.
8	Weather seal	NBR
9	Nuts	Stainless steel
10	Plug	Steel galvanized for DN50-DN300, Cover plate for DN350-DN2000 material same as body with SS304 bolts
11	Screw	SS304

Lug type concentric butterfly valve specification

Body style	Flange
Nominal diameter	2″ – 24″ (DN50mm – DN600mm)
Top flange	ISO5211
Operating pressure	10-16bar
Temperature range	-20 °C to + 140 °C (depending on pressure, medium and material)
Flange accommodation	EN 1092 PN 6/PN10/PN16 ASME Class 150AS 4087 PN10/ PN16JIS 5K/10K
Applications	Potable Water, Wastewater, Seawater, HVAC
Operation	Hand lever, gear box, pneumatic actuator, electric actuator

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