Two-piece stem’s design facilitates easy assembly and field maintenance without the use of special tools. Two-piece systems makes disc feature being streamlined, minimizing fluid friction resistance and pressure loss.
2 Mounting Flange
Designed for easy adaptation of: lever handles, worm gears, pneumatic and electric actuators.
3 Stem Bushing
Low friction, lubricated bushing, absorbs side thrust load and reduced operating torque.
4 Body
One-piece design assures high strength. Wafer and lug style design accommodates ANSI, DIN, BS and JIS flanges. Long neck accommodates insulation.
5 Flange Bolt Hole
Design accommodates to connect standard flanges of ANSI, DIN, BS and JIS.
6 Resilient Soft Seat
By bonding the elastomer rubber to a phenolic backing ring complete support and stability of seat is assured. Non-collapsible, stretch resistant, blow out proof, field replaceable.
7 Disc
Streamlined design to reduce pressure loss and minimize turbulence precision profile disc provides bubble tight shut off and assure minimum torque and longer seat life.
8 Seat O-Ring
Two molded o-ring designed as one body with seat ensures tight sealing with no gaskets when connected with flange.
9 Primary Sealing
Tight contacting between disc spherical hub and seat spherical hub ensures excellent sealing at any disc positions.
10 Secondary Sealing
Accommodates tight sealing function both inside and outside of the valve, being applicable under the vacuum condition.
VALVE SPECIFICATION
Vallve Size Range
· 2”(50A) ~ 12”(300A) : STANDARD
· VALVE PRESSURE RANGE: ANSI 150, JIS 10, PN10~PN16
Connection Type
· WAFER / LUG
Valve Connection
· ANSI B16.5 CLASS 125, 150
· JIS B2220 5K, 10K, 16, 20
· AWWA C207
· BS 4504 PNG 10, 16, 20
Valve Face to Face
· ANSI B16.10
· API 609
· ISO 5752
· MSS SP-67
· BS 5155
Vallve Operator
· 2”(50A) ~ 12”(300A) : LEVER HANDLE OR WORM GEAR
· 2”(50A) ~ 12”(300A) : PNEUMATIC AND ELECTRIC ACTUATOR
· CHEMICAL, PETROCHEMICAL PROCESSING (POWER PLANTS, GENERAL INDUSTRY)
· BI-DIRECTION
Replaceable Seat
Where resilient seats are required for “bubble-tight” shut-off, center line provides the advantage of a soft seat which is vulcanized to a hard phenolic backing.
Thus the non-collapsible seat does not require to bond the valve body.
Replacement of the seat is simple, slide it out of the body and slip in a new one.
A range of elastomers is available, which allows the valve to be adapted to a wide range of services.
Moulded flats in the resilient seat (where stem passes through) compress against the Matching flats on the disc that provide the primary stem seal, eliminating leakage into the stem area.
Back up is by built in secondary seal O rings.
Hard phenolic backing eliminates seat distortion. Non-collapsible blow-out proof seat Bi-directional line flow.
Seat serves as its own flange gasket
Dry-back seat for maximum corrosion resistance. Flow media are isolated from valve body, shaft and external parts.
Accommodates schedule 40 and rubber lined pipe - no spacers required.
(For schedule 80 consult sales office).
Different elastomers to suit service conditions Temperature range -51°…to +20.5°…
Seat design permits valve to be bolted between slip-on or weld-neck flanges.
