Royal Sales Corporation
Butterfly Valves
Size
2" to 36" (50 mm to 900 mm)
Pressure Rating
PN10, PN16, PN25, Class 150
Design Standard
API 609, CAT A, EN593(BS5155), MSS SP 67
L&T Valves manufactures Aquaseal Elastomer-lined Butterfly Valves in a variety of pressure classes, body styles, materials and actuation options to meet myriad requirements in process and utility lines.
At the core of L&T Aquaseal Butterfly Valve is an in-situ moulded integral elastomer seat that provides better performance and longer service life compared to valves with loose liners.
Aquaseal requires no maintenance, and is a truly fit-and-forget valve.
Salient Features:
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Enhanced reliability, Longer service life
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Tight sealing, Consistent low torque
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Assured shaft sealing
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One-piece blowout-proof Shaft
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Reliable Drive - Positive shaft-disc connection
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Lower resistance to flow - Contoured disc
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Ease of installation
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Integral actuator mounting platform
Versatile Range:
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Pressure ratings: PN10, PN16, PN25 and Class 150
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End connections: Wafer, Lugged, Flanged
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Body materials: Cast Iron, SG Iron, Carbon Steel, SS 304/ CF8, SS 316/ CF8M
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Elastomer options: Black/ White Nitrile, EPDM, Viton, Hypalon, Silicon
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Specials: Long Neck, Extended Stem
GALLERY
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Triple-offset Butterfly Valves

Size
3" to 100" (80 mm to 2500 mm)
ASME Class
Class 150 to 1500
Design Standard
API 609 Cat B
Beyond Standards :
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Design complies to API 609
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Valves offered with API 609 monogram
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Wide portfolio of Short-pattern and Long-pattern valves
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Design Validation Test - 12” Class 150 valve successfully completed 10,000 cycles
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Fugitive emissions - Complies to ISO 15848-1 Endurance Class CO2 and Tightness class AH
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Fire safe by design and complies to API 607/ ISO 10497 (preferred and non-preferred direction)
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API RP 591 test conducted on 12” Class 150 TOBV at Element Lab, USA
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CE Marking - Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H
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PED Module B1 Design examination certificate (certified by DNV) available
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Atex - Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment
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SIL3 Safety Integrity Level to IEC 61508
Features that add value:
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Triple-offset Geometry minimises seat-seal contact – lower operating torque and cost of ownership
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Compact and light weight as compared to gate valves of the same size
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Hard faced in-situ body seat and flexible laminar seal ensure bubble tight sealing
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Single piece Anti blow out shaft
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Disc contour ensures minimum turbulence and pressure drop
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Retainer bolting complies to ASME Section VIII Div 1 Appendix 2
Versatile Solutions :
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Options: High Temperature, Cryogenic, FBE-lined, Steam-jacketed
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Offered with Electric, Pneumatic and Hydraulic Actuators
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In-house Tests Capabilities - Cryogenic Test, Pipe Bending Test, Vacuum Test and Fast Closure Test
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ValvTracTM RFID tags for reliable digital traceability
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Fabricated Steel Butterfly Valves

Size
6" to 120" (150 mm to 3000 mm)
Pressure Rating
PN6, PN10, PN16
Design Standard
AWWA C 504, AWWA C 516, EN593, ISO 5752
Aquaseal Max is a fabricated steel butterfly valve developed as an alternate for cast iron butterfly and sluice valves in water distribution systems. The highly reliable valve also finds application in power plants, utility and fire water lines, and HVAC systems. Customised Aquaseal Max can be used to handle air, gases and vacuum services. The valve has successfully under gone Proof of Design (POD) test as per AWWA C 504 and AWWA C 516.
The key feature of Aquaseal Max Fabricated Steel Butterfly Valve is a Self-energising Disc Seal that uses line pressure to provide assured sealing.
Salient Features:
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Self-energising Disc Seal - Bi-directional bubble-tight sealing
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Assured Sealing to Atmosphere
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Lighter and Stronger Construction
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Lower Torque, Longer Life
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Maintenance-free Bearings
Versatile Range:
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Pressure ratings: PN6, PN10 and PN16
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Body materials: Carbon Steel IS 2062, A 516 Gr.70, SS 304, SS 316
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Seat options: Nitrile Rubber, EPDM, Viton
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Specials: Ebonite-lined valves for sea water applications, Special sealing systems for vacuum services, Butt-weld ends
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Dual-plate Check Valves

Size
2" to 12" (50 mm to 300 mm)
Pressure Rating
PN10, PN16, Class 125
Design Standard
API 594
Aquaseal Check Valve is a soft-seated dual-plate check valve that conforms to API 594. The valve with cast iron body is available in sizes 2” (50 mm) to 12” (300 mm), in PN 10, PN 16 and ASME Class 125 pressure ratings.
Features & Benefits:
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Patented retainer-less design - High integrity sealing, facilitates quick disassembly at site
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Two independent seats - Consistent sealing even in uneven flow
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Raised profile of the soft seat enhances sealing
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Integrally moulded liner
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Stopper pin prevents the discs from coming into contact with each other and thus prevents disc damage. The stopper pin also prevents spring failure by ensuring that the discs don’t travel beyond the full-open position.
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For sizes 6” and above, lifting eyebolt option is provided
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Drain connections provided on demand



