High performance

Specification of "H,M and F" Series

The valve shall be capable of bi-directional flow and provide bubble
Tight shut-off at full rated pressure.

Type numbering system

• AV-HWR High-performance WAFER type Rubber seat Butterfly valves
• AV-HSR High-performance SEMI-LUG type Rubber seat Butterfly valves
• AV-HLR High-performance LUG type Rubber seat Butterfly valves
• AV-HFR High-performance FLANGE type Rubber seat Butterfly valves
• AV-HWT High-performance WAFER type Teflon seat Butterfly valves
• AV-HST High-performance SEMI-LUG type Teflon seat Butterfly valves
• AV-HLT High-performance LUG type Teflon seat Butterfly valves
• AV-HFT High-performance F LANGE type Teflon seat Butterfly valves
• AV-MHW High-performance WAFER type Metal seat Butterfly valves
• AV-MHS High-performance SEMI-LUG type Metal seat Butterfly valves
• AV-MHL High-performance LUG type Metal seat Butterfly valves
• AV-MHF High-performance F LANGE type Metal seat Butterfly valves
• AV-FHW High-performance WAFER type Fire safe seat Butterfly valves
• AV-FHS High-performance SEMI-LUG type Fire safe seat Butterfly valves
• AV-FHL High-performance LUG type Fire safe seat Butterfly valves
• AV-FHF High-performance F LANGE type Fire safe seat Butterfly valves

Standards compliance

• The face to face dimension shall be in accordance with API 609, ISO 5752, KSV 7490, JIS F7480, BS 5155 or MSS SP-68
  

Production range

• SIZE : 50A (2inch)~1500A (60inch)
  
• WORKING PRESSURE : 0bar ~ 25bar
  
• WORKING TEMPERATURE : -20°C ~ +250°C (Soft seat)
• WORKING TEMPERATURE : -100°C ~ +400°C (Metal seat)
  

Applicable flange

• KS/JIS 5K, 10K, 16K, 20K
  
• ANSI B 16.5 Class 150LB, Class 300LB
  
• BS 4504 PN10, PN16, PN25
  
• ISO 2084 PN10, PN16, PN25

The High-Performance Design

The axis of disc rotation is double eccentric to the seat ring.
When the disc rotates, it unseat at a small turning angle by tis cam effect.
This prevents seat abrasion and provides perfect seal for a long period.

Application of Piping System

Marine tankers-shipbuilding
Foundry
Offshore plants
Pulp and paper plants
Chemical and petro-chemical plants
Food plants
Water treatment-purification
Textile industry
Steel and metal plants
Sugar refining
Military application
Fire safe piping system

Classification by Connection Type

Appearance	Type	General Charateristics
	AV-H,M & F Series(WAFER)	-The valve to be installed with long bolts between the flanges at adjacent pipe without flange on the vlave -Easy handling and lignt weight. -Less quantity of bolt hole and easy installation. -Inconvenient maintenance of adjacent pipe.
	AV-H,M & F Series(SEMI-LUG)	-Similar as wafer type except a pair of the thread bolt in way of the upper and lower lug sides for easy mainternance of adjacent pipe. -Easy handling and light weight. -Less quantity of bolt hole and easy installation. -Keep liquid remained during repairing adjacent pipe.
	AV-H,M & F Series(LUG)	-Ring shape bolt hole for bolting with flange. -Keep pressure inside during repairing adjacent one side pipe. -Different flange shape. -Possible damage on full face gasket. -Hard repairing corroded bolt. -More man-hour for installation. -Heavy weight and more cost.
	AV-H,M & F Series(FLANGE)	-Both end with complete flange. -Suitable to general pipe flange. -Suitable for shipside valve in the ship. -Heavy weight and more cost. -More man-hour for installation.