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4S-V5422 High Performance Butterfly Valves
Fouress have introduced the unrivalled â 4S-V5422â high performance butterfly valve that replaces the general valves like Ball Valves and Gate Valves. The innovative design is compact, light in weight and economical. As illustrated, fluid pressure to the disk and seatring ensures a secure seal for flow directions from both A & B. the â Lâ shaped seatring absorbs the fluid pressure tightly against the disc, creating a complete seal.
The teflon seatring is designed to withstand extremely corrosive chemical solutions and high temperature fluids up to 2300 C ( â Eg. dematerialized water, air-conditioning chilled/ hot water, white liquor, formal dehyde solution, organic solvent, compressed air, oxygen, exhaust gas, coke oven gas etc.)
Double Eccentric Mechanism : Since the stem is eccentric from the seatring ( as indicated by A & B) , the disk is in contact with the seatring only, when the valve is completely closed. The benefit from the double eccentric disc design include :
Longer service life due to hard-to-wear seatring.
When in closed position, the force on the disc on the seatring ensures complete sealing.
Easy operation with low seating torque.
The offset stem design allows easy replacement of seatring without removing the stem.
For Detailed Specifications and Dimensions
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Material of Construction
APPLICABLE FLANGES JIS 10K, 16K, 20K / ANSI 125lb, 150 lb / BS NP16,
NP25 / DIN ND 16, ND 25 / ISO PN10, PN 16
MAX. SERVICE PRESSURE 20 Kg / Cm2
SERVICE TEMPERATURE -50° C TO + 230° C
HYDROSTATIC TEST Body ( 30 Kg / Cm2) SEAT ( 22 Kg/ Cm2)
STANDARD MATERIAL
BODY ( A 216 Gr. WCB / A 351 Gr. CF8/ CF8M)
DISC ( A 351 Gr. CF8/ CF8M)
SET RING ( ASTM A240 TYPE 316)
SEAT RING ( GLASS FILLED PTFE) / ( BS970
431S29-above 10 Kg/ Cm2)
BUSH ( SS 304 + PTFE)
STEM ( A 479 TYPE 316 - Upto 10 Kg/ Cm2)
GLAND ( ASTM A479 TYPE 316)
GLAND FLANGE ( A351 Gr. CF8M/ SS316)
PACKING WASHER - SS316 GLAND PACKING - PTFE ( TEFLON)
COVER ( ASTM A351 Gr. CF8M/ SS316)
GASKET ( Graphite reinforced Teflon)
TAPER PIN ( SS 316)
GLAND BOLT, NUT, SPRING WASHER ( SS 316)
SET PIN 3â - 12â ( SS 316)
SET SCREW 14â - 24â ( SS 316)
DRAW-OUT SCREW 3â - 12â ( SS 316)
COVER BOLT, SPRING WASHER ( SS 316)
4S-V16 ( 16 bar) Butterfly Valves
Fouress # 300 rating high performance butterfly valves are reliable, well proven design provides bi-directional shut-off.
4S-V30 valves are provided with a groove/ step on the seat to be held in position between seatring and the body:
Under throttled condition, when the valve disc is crack open, the high velocity cannot pull the seat. Hence seat will not get damaged due to high velocity during control duty.
Seal Back-up Ring: will prevent any undue outward movement of the Teflon seat.
The seat is designed to move slightly in the direction of flow: this allows the pressure access to the back of the seat, thus making the seat progressively tighter as the pressure increases. During reverse flow, any deflection of the disc would tend to reduce the tightness but the pressure behind the seat compensates to maintain the seat tightness.
Large area of seat contact: this ensures increased tightness and shut-off potential. br>
Seat ring designed to move in the direction of flow: this allows pressure access in the back of the seat, thus making the seal progressively tighter as the pressure increases. During reverse flow, any deflection of the disc would tend to reduce the tightness but the pressure behind the seat compensates to maintain the seatring
Large area of seal contact: This ensures increased tightness and high shut-off potential.
Special Features :
4S-V30 valves could be used for both on/ off and control duty.
Fully rated for 300# -can be used up to 50 bar pressure.
As per design standard MS-SP68.
Reliable design proved by cycle test.
Drilling Standard: ANSI B16.5 # 300.
For Detailed Specifications and Dimensions
Download Brochure
Material of Construction
DESCRIPTION MATERIAL STANDARD SPECIFICATION DESCRIPTION MATERIAL STANDARD SPECIFICATION
BODY Stainless Steel ASTM A351 Gr.CF8 TAPER PIN Stainless Steel ASTM A564 Type 630
Condition - HT 150
DISC Stainless Steel ASTM A351 Gr.CF8
SHAFT Stainless Steel ASTM A564 Type 360
Condition - HT 150 SEAT RING
BACK-UP- RING PTFE
Stainless Steel 20% Glass Filled PTFE
ASTM A479 type 316
SET RING Stainless Steel ASTM A240 type 316 UPPER/ LOWER BUSH PTFE + St. St.
Type 316 As per standard
GLAND Stainless Steel ASTM A479 type 316
GLAND FLANGE Stainless Steel ASTM A240 type 316 GASKET PTFE As per standard
PACKING WASHER Stainless Steel ASTM A479 type 316 GLAND PACKING PTFE As per standard
BOTTOM COVER Stainless Steel ASTM A240 type 316 YOKE Carbon Steel IS: 2062 Gr.B
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