Tomoe 304YA, Instruction Manual

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1. PRODUCT FEATURES
1. 1 About the Product
This product is a double eccentric butterfly valve, which controls fluid by 90-degrees rotation of the disc.
The valve can be fully opened or closed. In addition, an intermediate valve opening can be used for fluid control.
1. 2 Standard Specifications
<Table-1> 304YA Standard Specifications
Valve Model 304YA
Valve Type Double eccentric (Wafer)
Valve nominal size
1 1/2, 2, 2 1/2, 3, 4, 5, 6, 8, 10, 12inch
40, 50, 65, 80, 100, 125, 150, 200, 250, 300 mm
Max. allowable working pressure 1.0 MPa
Allowable seat leakage standard ISO 5208 leakage rate A (tight shut-off)/ JIS B 2003 -2013 rate A
Flow direction Retainer side pressurization
Applicable
standards
Face to face
dimensions
JIS B 2002
-1987
(series 46)/ ISO 5752 wafer butterfly valve (short)
Applicable flange
connection
JIS 5K / JIS 10K / ASME / ANSI CLASS 150
Top flange In compliance with ISO 5211
Standard
materials
Body SCS13A FCD450
Disc SCS13A
Shaft SUS630 SUS420J2
Seatring RPTFE (Carbon and graphite contained)
Gland packing RPTFE (Graphite contained)
Maximum temperature range -29°C - 200°C -20°C - 200°C
Ambient temperature range
1T -20°C - 80°C
2U -10°C - 80°C
7E, 7F, 7G -10°C - 60°C
3U, 3K 0°C - 80°C
4I ,4J -10°C - 50°C
Test pressure
Body Shell Working pressure × 1.5 (Water pressure)
Seat leakage Working pressure × 1.1 (Pneumatic pressure)
Actuator
Lock Lever 1T 40 mm - 150 mm
Worm gear 2U 40 mm - 300 mm
Pneumatic cylinder
7E 40 mm - 300 mm
7F, 7G 40 mm - 200 mm
3U, 3K 250 mm, 300 mm
Motorized 4I ,4J 40 mm - 300 mm
Maximum average flow velocity
in piping (Limit value)
6 m/s or less (Valve full-open, continuous operation)
Body color FCD450-body only : Modified silicon resin coating Munsell N7 (Gray)