Wenzhou Goldtop Valve Co.LTD
Wenzhou Goldtop Valve Co.LTD

Gold top valve  located in Oubei Town, Wenzhou, China,where can make all kinds of precision balls,including top entry,metal seat and V type balls.On this base,our products range of floating,trunnion,Gate globe check valve ,butterfly valve ,etc.Surely we can design them by customer's special requirements.

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High Temperature DBB Trunnion Mounted Ball Valve Full Bore Forged Carbon Steel

High Temperature DBB Trunnion Mounted Ball Valve Full Bore Forged Carbon Steel

  • High Temperature DBB Trunnion Mounted Ball Valve Full Bore Forged Carbon Steel
  • High Temperature DBB Trunnion Mounted Ball Valve Full Bore Forged Carbon Steel
High Temperature DBB Trunnion Mounted Ball Valve Full Bore Forged Carbon Steel
Product Details:
Place of Origin: 中国
Brand Name: GOLD TOP
Certification: API 6D
Payment & Shipping Terms:
Minimum Order Quantity: 1 pcs
Price: Negotiation
Packaging Details: Plywood Case
Delivery Time: 30 days
Supply Ability: 100+pcs+30 days
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Detailed Product Description
SIZE: 2''-48'' Design: API 6D
End Connections: RF / FF / RTJ Fire Safe: API 6FA / API 607
Operated Way: Lever / Gear / Pneumatic / Electric Pressure: 150# ~ 2500#
High Light:

three way ball valve


blowout proof stem ball valve

Oil Gas Industrial Trunnion Type Ball Valve , High Temperature Ball Valves Double Block And Bleed


DBB Ball Valves (Double block & bleed)

Double block & bleed ball valves are mainly suitable for the instrumentation but is also required as an alternative to the in-line installation of two valves.Thanks to a DBB ball valve, it is possible to have the same result reducing costs, overall dimensions and the ability to bleed off the plant, by controlling a potential leakage of the plant. Double block & bleed valves DBB are recommended for any pressure class and ensure long-lasting seal.They can be supplied both in the Trunnion and in the Floating version. These valves can be designed to meet with Customer’s requirements: for instance, they may be buried in the ground and made operable by the extensions.Valves are built in any steel required by the Customer and defined in the data sheet according to the quotation request.


Main applications in the petrochemical field

  • Cryogenic service.

  • Low temperature.

  • Ambient temperature.

  • High temperature.

  • Corrosive fluids.

  • High pressures.

  • Samplings from line.

  • Fluids injection.

DBB ball valves produced by Etiovalves are provided in accordance with the following certifications:

  • ISO (International Organization for standardization)

  • PED (Pressure Equipment Directive)

  • ATEX (ATmosphères EXplosibles)

Double Block and Bleed Systems

The primary function of a double block and bleed system is for isolation and the secondary function is for intervention.Under certain conditions double block and bleed systems are needed to prevent product contamination or where it is necessary to remove essential equipment from service for cleaning or repairs while the unit continues in operation. Of course, such equipment must be provided with a spare or it must be possible to bypass it temporarily without shutting down the unit. The nature of the fluid, its pressure and temperature, and many other factors must be considered when determining the need for double block and bleed systems.


Technical parameters and characteristics


Double Block & Bleed Ball Valve


1/2" - 24"

Design temp.

-196℃ - 200℃

Design pressure

class 150 - 2500


A105, LF2, F304, F316

Design standard

API 6D, ASME B16.34

Face to face

Manufacturer Standard


ASME B16.5, ASME B16.25, ASME B16.11

Test standard

API 6D, API 598, ISO 5208


Lever, Worm Gear


petrochemical, chemical, power plant, oil, gas

Feature 1

compact design, desirable performance

Feature 2

full bore, reduce bore

Feature 3

fire safe design

Feature 4

anti-blow out stem design, maintenance could be easy on the pipeline

Feature 5

inlet and outlet closed, block and bleed


Double Block and Bleed system



Contact Details
Wenzhou Goldtop Valve Co.LTD

Contact Person: sales

Tel: +8613758447235

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