Product Attributes

Model No.: VTQFW

Brand: VT

Types Of: Ball Valves

Support Customization: Oem, Odm

Place Of Origin: China

Application: General

Medium Temperature: Medium Temperature

Power: Electric, Hydraulic, Pneumatic

Flow Medium: Gas, Water, Oil

Structure: Ball

Supply Ability & Additional Information

Packaging: Export Standard plywoodcase

Productivity: 10000 sets/year

Transportation: Ocean,Land,Air,Express

Place of Origin: China

Supply Ability: 10000sets

Certificate: API 6D,API 607,ISO 9001,ISO 14001,ISO 45001

HS Code: 8481804090

Port: SHANGHAI,SHENZHEN,NINGBO

Payment Type: L/C,T/T

Incoterm: FOB,CFR,CIF,EXW,Express Delivery,DDU,DDP

Packaging & Delivery

Selling Units:

Set/Sets

Package Type:

Export Standard plywoodcase

Picture Example:

The underground fully welded ball valve is primarily applied to buried pipeline systems. The all welded ball valve 's body features a welded structure, which endows it with excellent sealing performance.

Since it is buried underground, there is usually an anti-corrosion coating on its exterior. This coating can effectively resist the corrosion caused by various substances in the soil and thus extend its service life.

all welded ball valve Design Parameter

Our company designs all - welded ball valves in strict accordance with international standards such as API 6D - 2023/ISO14313:2023, ISO 5208, ASME B16.34 - 2023 and ASME B31.8.

Design standard	API6D, ASME B16.34, BS5351, ISO17292 etc.
Ends connection	butt weld, flanged, ring joint, butt weld by flanged
Actuator	2” -48” (DN 15-DN 1200)
Nominal diameter	CLASS 150 – CLASS 2500 (Mpa 1.6- Mpa 42.0)
Pressure rating	carbon steel,stainless steel,20#steel ,nickel alloy,cobalt alloy etc.
Materials	petroleum, natural gas,chemical,power station,metallurgy,papermaking etc.

Design Features

1.Fully welded body

Sealant injection fitting for emergency stem&seat sealing.

2.Spring energized seats

ISO5211 Mounting pad for actuator or gear operator.

3.Metal or soft seated

Removable stem seal under full line pressure in fully opened or closed position.

4.Double Block and Bleed

Antistatic device for grounding of the ball, stem and body.

5.Full or reduced bore

Self-lubricated bearings in accordance with API6D, API6FA, BS6755 and NACE01-75(latest edition).

6.Flanged or welded ends

Trunnion supported design reduces operating torque.

7.Corrosion resistant low friction bearing

Two sets of O-ring plus fireproof stem packing prevent leakage.

Underground full welded ball valve application

1.Urban water supply and drainage systems

Full welded ball valve control water flow distribution and sewage pipes to control flow direction.

2.Energy transportation Field

Fully welded ball valve used to cut off and control underground long-distance oil and natural gas pipelines.

3.Chemical parks

fully welded trunnion ball valve used in underground chemical raw material transportation pipelines in chemical parks to prevent raw material leakage.