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Dual Expanding Plug Valve

Double Block & Bleed
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Through conduit
RSB
Nozzle
Retention
Globe
Plug valves
Ball
Gate
Plug
Globe Control

characteristics of the DBB

The Dual Expanding Plug valves produce a watertight closure both upstream and downstream, being used in different sectors:

  • Storage tanks
  • Loading and unloading stations
  • Multi-product distributors
  • Measuring stations
  • Aviation fuel services
  • Transfer of custody units
  • Marine platforms

The design of these valves allows closure on both sides and venting in the valve chamber (double block & bleed). Since its sealing mechanism is not based on friction and wear on the closing elements we prevent product loss and contamination, in addition to meaning a long life.

WHY ARFLU DBB VALVES ARE THE MOST EFFICIENT AND ECONOMICAL ON THE MARKET

DOUBLE BLOCKING AND BLEED

Easy handling, lower maintenance cost and space saving

BACK SEAT

The gasket is easily replaceable or adjustable, even if the line is under pressure.

DESIGN

Our design is optimized using the most modern computer technology, 3D design, Finite Element Calculation, …

MANUFACTURING CAPACITY

NO FRICTION

Low and friction-free operating torques at opening and closing.

MAINTENANCE AND SERVICE

Easy access to the slips to change them quickly, if necessary. Low cost maintenance.

PACKING

Option of special requirements on demand (such as TA Luft, fugitive emissions, etc.).

LOWER TRUNNION

As there is no cavity in the body there is no accumulation of particles that could interfere with the functioning of the valve.

DOUBLE GUIDED PLUG

This ensures the alignment and tightness of the two slips

 

ARFLU Dual Expanding Plug valves represent the “single valve solution”. They are easy to operate, require very little maintenance and offer verifiable double block & bleed service with an extraordinary long lifetime.

competitive advantages

TECHNICAL INFORMATION

ARFLU MANUFACTURING RANGE

ARFLU, is known for the extensive manufacturing range, we manufacture large number of valves in almost all sizes and materials. If you do not find the valve you need in the box attached, please contact our sales representatives and we will study the feasibility of producing in other dimensions.

SIZE

construction

ends

asme class

international standards

INTERNATIONAL DESIGN STANDARDS

At ARFLU we comply with all international design standards.

DESIGN AND MANUFACTURING:

API 599: Metal Plug Valves – Flanged and Welding Ends
API 6D: Pipeline Valves. Pressure Test Specification.
ASME B 16.34: Valves-Flanged, Threaded, and Welding End.
ASME B 31.3: Process Piping
ASME B 31.4: Pipeline transportation systems for Hydrocarbons and other liquids
API RP 6FA: Specification for Fire Test for Valves

 

INSPECTION AND TEST:
API 6D: Pipeline Valves. Pressure Test Specification.
API 598: Valve Inspection and Testing.
ISO 15848: Industrial Valves – Measurement, test and qualification procedures for fugitive emissions.

FLANGE DIMENSION:
ASME B 16.5: Pipe Flanges and Flanged Fittings.
ASME B16.47: large diameter steel flanges: nps 26 through nps 60
​MSS SP 44: Steel pipeline flanges

WELDED END:
ASME B16.25: Buttwelding ends

FACE TO FACE AND END TO END:
ASME B 16.10: Face-to-Face and End-to-End Dimensions of Valves.
API 6D: Pipeline Valves. Pressure Test Specification
API 599: Metal Plug Valves – Flanged and Welding Ends
STANDARD ARFLU

 

BY-PASS & DRAIN:
MSS SP 45: By – Pass & Drain Connections
* Other standard/materials under request

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    +34 94 676 60 01

    NIF – A78898277

    Polígono Telleriondo, 48600 Sopela, Spain

    © 2022 ARFLU SA

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