2L Engineers is the leading Butterfly Valve Manufacturer in INDIA

2L Butterfly Valves are designed to offer reliable control and on-off performance using a disc as the closure part. Butterfly valves can be either symmetric (centric) or eccentric (offset), the offset referring to the stem being displaced from the centre of the disc. 2L butterfly valves are available with wafer style (no flanges), lugged (single flange), and double-flanged body types. For other types of design and configurations of materials of construction, contact 2L Engineers for a detailed General Assembly Drawing (GAD).

Technical Details

Special Features

The design complies with API 609
Blowout-proof Shaft
Range of Short-pattern and Long-pattern valves
Tight sealing and low operating torque
Design Validation Test for various valves successfully completed 10,000 cycles
Elastomer Seals - Black/White Nitrile, Black/White EPDM, Viton, and Silicon
Fire-Safe Design for Offset Valves
Actuator mounting pads to ISO 5211

Design Standards

EN 593 and API 609 Cat A & B

End Flanges:

ASME B16.5

Face to Face

API 609, ISO 5752, EN 558

Testing Standard

API 598

End Connections

Wafer and Lugged
Raised Face Flange (ASME B16.5, EN 1092-1)

Sizes Range

CAT A: DN 40 to DN 800 (1.1/2" to 32")
CAT B: DN 50 to DN 900 (3" to 36")

Pressure rating

CAT A Centric Disc: PN10, PN16, PN25, and Class 150
CAT B Offset Disc: Class 150 to Class 900

Operations

Manual: Bare-shaft, Lever & Gearbox
Automation: Electric, Pneumatic, and Hydraulic Actuators

Shutoff Rating

Zero Leakage for Soft Seated & Metal Seated as per API 598 or relevant STD

Material Type Specification:
Type of Service:	Valve Shell Material:	Pressure Controlling Parts & Stem:
General Service	Carbon or Low-Alloy Steel	Carbon or Low-Alloy Steel
General Service	Carbon or Low-Alloy Steel	Stainless Steel
General Service	Stainless Steel	Stainless Steel
Sour Service	Carbon or Low-Alloy Steel	Carbon or Low-Alloy Steel
Sour Service	Carbon or Low-Alloy Steel	Stainless Steel
Sour Service	Stainless Steel	Stainless Steel
Sour Service	CRA ( Corrosion Resistant Alloy)	CRA ( Corrosion Resistant Alloy)

Sour Service: as per NACE MR0175 / ISO 15156 and NACE MR0103 / ISO17945, for full details, contact 2L Engineers. Material Specification details are only indicative, for full details, contact 2L Engineers.

Butterfly Valves