Direct Buried Ball Valve

Direct Buried Ball Valve Parameter Specifications Industry Applications

Direct Buried Ball Valve

Product Overview

The Direct Buried Ball Valve is designed for pipeline systems where the valve is installed underground or in remote locations, providing reliable shut-off and long-term operation with minimal maintenance. Its robust design, corrosion-resistant coating, and extended stem allow for direct burial without compromising accessibility or performance. This valve is ideal for natural gas, water, and oil pipelines requiring secure and durable operation in harsh environmental conditions.

OEM & Customization Capabilities:

Full OEM support including custom branding, valve design, and packaging
Customizable valve sizes, pressure ratings, and body materials
Extended stems and buried valve boxes for underground installation
Optional actuators: manual, worm gear, electric, pneumatic
Special anti-corrosion coatings for buried pipelines
Custom flange dimensions, end connections, and valve orientation
Fire-safe and anti-static designs for hazardous service
Sealing materials tailored to media and temperature conditions

Certifications:

ISO 9001 Quality Management System
API 6D / API 608 Ball Valve Standards
API 607 / API 6FA Fire-Safe Certification
API 598 Valve Inspection & Testing
CE / PED Compliance
NACE MR0175 / MR0103 for sour service
ISO 15848 Fugitive Emission Certification
SIL Certification (Optional)

Parameter Specifications

Parameter	Specification / Range
Valve Type	Direct Buried Ball Valve
Body Material	Carbon Steel, Alloy Steel, Stainless Steel
Ball Material	Stainless Steel (SS304, SS316), Duplex Stainless Steel
Seat Material	PTFE, RPTFE, PEEK, Metal Seat
Size Range	DN50 – DN1200 (NPS 2" – 48")
Pressure Rating	PN16 – PN420 / Class 150 – Class 2500
Bore Type	Full Port / Reduced Port
Connection Type	Flanged, Butt Weld, RTJ, Hub End
Operating Temperature	-29°C to +200°C (Soft Seat)
High-Temperature Option	Up to +550°C (Metal Seat)
Operation Method	Manual, Worm Gear, Electric, Pneumatic
Stem Design	Extended Stem for Buried Installation
Leakage Class	ANSI/FCI 70-2 Class VI
Fire Safe Design	API 607 / API 6FA
Anti-Static Design	Available
Testing Standard	API 598 / ISO 5208
Service Life	Up to 30 Years in Buried Conditions

Industry Applications

Direct Buried Ball Valves are commonly used in pipeline systems that require underground installation, long-term reliability, and minimal maintenance:

Natural Gas Transmission & Distribution

Urban gas distribution pipelines
Long-distance gas transmission
Underground valve stations
LNG and CNG pipelines

Water Supply & Wastewater Systems

Municipal water networks
Sewage and wastewater pipelines
Irrigation pipelines
Pump station connections

Oil & Petrochemical Pipelines

Buried crude oil pipelines
Oil distribution networks
Chemical and process pipelines
Terminal loading/unloading systems

District Heating & Energy Systems

Underground heating networks
Steam and hot water distribution pipelines
Industrial energy transfer pipelines

Key Advantages:

Designed specifically for buried installations with extended stems
Corrosion-resistant coatings for long service life underground
Maintenance-free operation with minimal excavation required
Fire-safe and anti-static options for hazardous service
Reliable shut-off and tight sealing under high pressure
Compatible with manual and automated actuation

CUSTOMIZED SERVICE Customized Product

Material customization plan

Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.

Structural optimization design

For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.

Interface standard adaptation

Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.