Trunnion-mounted Ball Valves

L&T Valves Limited Trunnion Mounted Ball Valves are of 2-piece / 3-piece design, with flanged or butt-weld ends.
As a standard, the valves are manufactured in bolted body designs, where the joint between the body and the connector is bolted. The bolted body design offers flexibility for dismantling during field service in case of an emergency.
Welded body designs, where the joint between the body and connector is welded, are also available on request

Features

Trunnion-mounted Ball Valves

Size 2″ to 56″ | ASME Class Class 150 to 2500
API 6D | API 608
2 Piece/3 Piece Construction | Full/Reduced bore

Side Entry & Top Entry | Soft Seat & Metal seat
Bolted & Welded | Flanged & Buttweld Design

Trunnion-mounted Ball Valve design complies to API 6D and can be offered with API 6D monogram
Wide range of product portfolio in Side-entry and Top-entry designs
Valves successfully tested to Shell Design Evaluation Test, Procedure 77/300 for temperature -29 to 150 degree C (O rings) and -50 to 150 degree C (Lip seals)
Vaves for gas services can be supplied with High pressure gas test (Sniffing & Immersion Method)
Coil springs used for consistent seat loading and lower operating torque
Double block and bleed (DBB) feature – Valves are designed and tested for automatic cavity relief
Lip seals are provided for low temperature services & Cryogenic services
2/3 stage Stem and 2 stage Body Joint sealing system; Primary O ring and Secondary graphite (in 3 stage stem, thrust washer is primary)
Where tight shut off is required, Double piston effect (DPE) seats provided for redundancy in sealing

Request for quotation

Description

Description

Special Features & Benefits

Trunnion-mounted Ball Valve design complies to API 6D
Valves offered with API 6D monogram
Wide portfolio of Side-entry and Top-entry designs
Fugitive emissions – Soft and Metal seated valves complies to ISO 15848-1, Class AH and BH
Stem seal configurations tested to API 622 at Yarmouth Research labs, Maine, USA
Firesafe design – Tested to API 607 and API 6FA
CE Marking – Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H
PED Module B1 Design examination certificate (certified by DNV) available
Atex – Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment
SIL3 – Safety Integrity Level SIL 3 certification to IEC 61508, certified by Exida/ TUV
Valves successfully tested to Shell Design Evaluation Test, Procedure 77/300 for temperature -29 to 150 degree C (O rings) and -50 to 150 degree C (Lip seals)
Pneumatic shell test conducted at 1.1 times rated pressure to check shell integrity, when required

Double block and bleed (DBB) feature – Valves are designed and tested for automatic cavity relief
Anti-blowout stem design
Coil springs used for consistent seat loading and lower operating torque
Lip seals provided for low temperature services
2/3 stage Stem and 2 stage Body Joint sealing system; Primary O ring and Secondary graphite (in 3 stage stem, thrust washer is primary)
Where tight shut off is required, Double piston effect (DPE) seats provided for redundancy in sealing

Key Features

L&T Valves handles a wide portfolio in ball valve category suitable for Oil & Gas Industry Double block and bleed (DBB) feature – Valves are designed and tested for automatic cavity relief Top Entry Valve design with Reduced downtime for maintenance with usage of Push assembly with Hydraulic tools