New Shipment - GEKO API 6D Trunnion Mounted Ball Valves

GEKO Valves has successfully supplied a series of API 6D Trunnion Mounted Ball Valves and Check Valves for high-pressure pipeline and process applications. This shipment covers multiple valve sizes and configurations, all designed and manufactured in strict accordance with international standards, ensuring reliability, safety, and long-term performance in critical services.

This article summarizes the key technical features, materials, and standards of the delivered valves, providing a clear reference for engineers, EPC contractors, and end users.

API 6D Trunnion Mounted Ball Valves (Class 600)

4” Trunnion Mounted Ball Valve – Full Bore, Class 600

The 4-inch API 6D trunnion mounted ball valve is designed for high-pressure isolation duties in oil & gas transmission pipelines.

Key Technical Features:

Size: 4”

Bore: Full Bore

Design: Trunnion Mounted Ball Valve

Construction: Three / Two Pieces Side Entry

Technology:

Double Block and Bleed (DBB)

Single Ball with Double Isolation / Double Seats

Internal Check Valve for sealant system

Secondary Sealant Injection on stem and seat plugs

Vent & Drain Connections as per API 6D

Fire Safe Design in accordance with API 6FA / API 607

Antistatic Device and Anti-Blow Out Stem

Operation: Gearbox with Locking Device

Standards & Ratings:

Design Standard: API 6D

Pressure Class: ASME Class 600

End Connections: Flanged RF – ASME B16.5

Face to Face: API 6D

Materials:

Body: ASTM A105N

Ball: Duplex Stainless Steel ASTM A182 F51

Stem / Trunnion: Duplex F51

Seat: Tungsten Carbide Hard-Faced

Spring: Inconel X750

Gland Packing: Graphite

O-Rings: Viton

Bolting: ASTM A193 B7 / A194 2H

6” Trunnion Mounted Ball Valve – Full Bore, Class 600

The 6-inch API 6D trunnion mounted ball valve shares the same high-integrity design philosophy and is suitable for large-diameter pipeline applications.

Main Specifications:

Size: 6”

Pressure Rating: 600 LB

Bore: Full Bore

End Connections: RF x RF, ASME B16.5

Construction: Three / Two Pieces Side Entry

DBB with Single Ball (Double Seats)

Internal Check Valve

Secondary Sealant Injection System

Vent & Drain Connections

Fire Safe: API 6FA / API 607

Antistatic & Anti-Blow Out Stem

Operation: Gearbox with Locking Device

Materials:

Body: ASTM A105N

Ball: Duplex ASTM A182 F51

Stem / Trunnion: Duplex F51

Seat: Tungsten Carbide Hard-Faced

Spring: Inconel X750

Packing: Graphite

O-Rings: Viton

Bolting: ASTM A193 B7 / A194 2H

1” High-Pressure Ball Valve – 800 LB

GEKO also delivered a 1-inch high-pressure ball valve, designed for compact installations requiring high integrity sealing.

Technical Highlights:

Size: 1”

Pressure Rating: 800 LB

Bore: Full Bore

Connection: Long Nipple, SW x FNPT

Body Material: Carbon Steel

Trim: Duplex Stainless Steel

Seals: Viton A

Plug, Vent & Drain locations as per API 6D

Replaceable Seats

Seat & Stem Sealant Injection System
(with internal check valve where applicable)

Fire Safe: API 6FA / API 607

Antistatic Device & Anti-Blow Out Stem

Bolting: ASTM A193 B7

Ready for Locking Device Installation

API 594 Wafer Lugged Check Valve – Class 600

In addition to ball valves, GEKO supplied API 594 wafer lugged check valves for reliable backflow prevention.

Specifications:

Type: Wafer Lugged Check Valve

Pressure Rating: ASME Class 600

Installation: Between Raised Face Flanges

Design Standard: API 594

Materials:

Body: ASTM A216 WCB

Plates: Duplex ASTM A182 F51

Trim: Duplex ASTM A182 F51

Seat: Metal-to-Metal

Pins / Retainers: Duplex F51

Spring: Inconel X750