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Oilfield Valves & Instruments in Doha Qatar


10 Common Types of Valves Every Oil and Gas Engineer Should Know About

Valves are essential parts of any piping system used to control the flow and pressure of contents, whether that is oil, gas, liquid, or vapors. Here is our list of 10 of the most commonly used oil and gas valves in the industry and the reasons for their existence.

ARV or ARC valves

Acronyms for ‘Automatic Recirculation Valve’ and ‘Automatic Recirculation Control’, these valves are multi-functional but has the primary purpose of ensuring that a pre-determined minimum flow is assured through centrifugal pump at all times.

As centrifugal pumps consistently suffer from being over heated, its important to keep the minimum flow otherwise dry valves means permanent damage.

Ball valves

A ball valve is a quarter-turn rotational motion valve that used a ball-shaped disk to control a flow. If the valve is opened, the holes in the ball stay in line with the body inlet allowing contents to pass.

The balls are generally made out of several metallics whilst the seats are made from soft materials like Teflon. The combination of materials means the ball valve can operate at temperatures as low as -200 deg C and as high as 500 deg C.

Mainly used for air, gases and liquids, ball valves are quick to turn on and off and have a tight sealing with low torque. The only downside to these valves are the lack of throttling properties available.


  • MEP SUPPLIES ASSOCIATED TECHNICAL TRADING WLL SUPPLIERS IN DOHA QATAR
  • HVAC CONTRACTORS ORONTES TRADING & CONTRACTING WLL SUPPLIERS IN DOHA QATAR
  • CABLES & CABLING SYSTEMS LAPP CAMUNACAVI AXIOM INTERNATIONAL WLL SUPPLIERS IN DOHA QATAR

Bellow sealed valves

There are two main types of bellow, the forged and the welded versions. Forged bellows are usually made from a thin wall of foil in a tube which is then longitudinally fusion welded.

The welded versions are made by welding washer-like plates of thin metal together at both the inner and outer circumference of the washers.

Traditionally made from stainless steel, they are most commonly used in conjunction with gate or globe designs due to their internal construction and axial movement of the valve stem.

Breather valves

Also known as vacuum relief valves, breather valves are a special type of relief valve designed for tank protection. The valves prevent the build up of excessive pressure or vacuum which can unbalance the system or damage the storage vessel.

Pressure and vacuum protection levels are usually controlled with weighted pallets and can be combined to meet the required settings. This valve must be used in accordance with the American Petroleum Institute’s API standard 2000 for venting atmospheric and low pressure storage tanks.

Butterfly valves

A quarter-turn rotational motion valve, the butterfly valves is used to stop, start and regulate flow. Easy and fast to open, the valve usually comes equipt with a gearbox where the hand wheel by gear is connected to they stem.

This simplifies the operation of the valve, but at the expense of speed. These valves must also be installed a minimum of 6 pipe diameters away from other line elements.

As well as being lightweight, and quick to use, the butterfly valves are available in large sizes and can cope with low-pressure drop and high-pressure recovery.



  •  PHOENIX EXPERIENCE TRADING WLL SUPPLIERS IN DOHA QATAR
  • PIPES & ACCESSORIES PIPELINE SUPPLIES & SVCS CO WLL SUPPLIERS IN DOHA QATAR
  •  21 TRADING CONTRACTING & SERVICES WLL SUPPLIERS IN DOHA QATAR

Gate valves

Gate valves are primarily designed to start or stop a flow when a straight line flow of fluid and minimum flow restriction are needed. In service, these valves are pretty much kept either fully open, or fully closed.

When turned open, the disc of the gate is completely removed allowing contents to pass. Although this gives the valve good shut-off properties and is bidirectional, they cannot be quickly opened or closed and are sensitive to vibration when open.

Globe valves

Typically used for cooling water systems, transporting fuel oil and turbine lube oil systems, a globe valve is a linear motion valve used to stop, start and regulate flow.

Conventionally used for isolation and throttling services, the globe has become the world’s most common types of valves. With a good shut off ability, available in tee, wye and angle patterns and easy to machine the valve seats – its easy to see why they are so popular.

The slight disadvantages of the globe are that they perform unfavourably when high pressure drops, and require greater force or throttling flow under the seat to shut off valve.

ORBIT valves

Every ORBIT valve incorporates a tilt and turn operation that eliminates seal rubbing, which is a primary cause of valve failure. When an ORBIT valve is closed, the core is mechanically wedged tightly against the seat assuring a positive shut off.

When an ORBIT valve begins to open, the core tilts away from the seat and line flow passes around the core face. This eliminates localized high velocity flow that typically creates uneven seat wear and a reduced valve life.

Capable of working at -104 deg C to 427 deg C, the valve is used for hot oil systems and mole sieve dryers.

Plug valves

A plug valve uses a tapered or cylindrical plug to stop or start a flow. In open position, the plug-passage is in one line with the inlet and outlet ports. If the plugis rotated from the open position, the solid part of the plug blocks the port and stops the flow.

These are quick to turn off, smaller in size compared to most valves and has minimal resistance flow. However, they do have a reduced port due to tapered plugs and a requires a large force to actuate, due to high friction.

Pressure seal valves

Adopted for valves for high pressure service, pressure seal valves are typically used in excess of 170 bar. The unique feature about the pressure seal ‘bonnet’ is that the body’s joints seals improve as the internal pressure increases.

It should also be noted that these valves also come as a bolted bonnet too seal the valve and the pressure seal gasket.

Many more valves

Obviously there are many more types of valves that are used within the industry, but is important for any oil and gas engineer to know the basic valves, the principals, and what they should be used for. For source info. click here!

Below is our verified list of OILFIELD EQUIPMENT SUPPLIERS in Doha, Qatar!



Find below a list of the top Oilfield Valves & Instruments in Doha, Qatar:

  • ASSOCIATED TECHNICAL TRADING WLL
    Location: OFFICE 10, BLOCK 6, ARKAN BLDG, BARWA COMM AVE, INDL AREA ,
    Phone: 44769910;50811108 - MOBILE
    Timings:8.00AM-6.00PM
    Key Personnel:Safdar Grace, SALES DEPT
    SABEER MUHAMMED , TECHNICAL DEPT
    SHAHJAR ALI, PROCUREMENT DEPT
  • ORONTES TRADING & CONTRACTING WLL
    Location: SHOP 7, BLDG 10, BARWA VILLAGE, AL WAKRAH ,
    Phone: 44116621
    Timings:8.30AM-5.30PM
    Key Personnel:ISLAM AL BARAZI, GEN MNGR
  • SOLARLINE TRADING WLL
    Location: OFFICE 3, ABDULLAH BIN THANI BLDG - 5, NR V I P R / A,
    Phone: 44622070;77575354 - MOBILE
    Timings:8.00AM-6.00PM
    Key Personnel:THAJUMON, Mngr
  • TEST & MEASUREMENT SOLUTIONS CO WLL
    Location: SHOP 48, BLDG 4, BARWA VILLAGE, AL WAKRAH,
    Phone: 44421062
    Timings:8.00AM-5.00PM : SAT - WED;8.00AM-2.00PM : THUR
    Key Personnel:VISWANATH TAGORE, SALES MNGR
  • AXIOM INTERNATIONAL WLL
    Location: OFFICE 25, 1ST FLR, BLDG 200, ST 995, AL MAMOURA PLAZA, ABU HAMOUR ( H O ); SHOP 5, BLDG 8, BARWA VILLAGE, AL WAKRAH ( SHOWROOM ),
    Phone: 44506186 - H O;44509325 - SHOWROOM
    Timings:8.00AM-6.00PM
    Key Personnel:MANIKANTAN A P, M D
    KRISHNACHANDRAN V, SALES MNGR
  • PHOENIX PARTS & SERVICES WLL
    Location: OFFICE 31, 2ND FLR, BLOCK 6, ARKAN BLDG, BARWA COMM AVE, INDL AREA,
    Phone:
    Timings:8.30AM-5.30PM
    Key Personnel:VINOD PILLAI, B D M - SALES / SVC
    SABU KASSIM, FIN MNGR
  • REAL TECHNOLOGIES
    Location: SHOP 27, BLDG 6, BARWA VILLAGE, AL WAKRAH,
    Phone: 44436750
    Timings:
    Key Personnel:AREES MEER , TECH MNGR
  • PROMPT ENGINEERING & TRADING SERVICES CO WLL
    Location: SHOPS 19 / 20, BLDG 6, BARWA VILLAGE, AL WAKRAH,
    Phone: 44418757;44115771;44115772;44115773
    Timings:8.00AM-5.45PM
    Key Personnel:Johnson Antony , Mng Dir
  • PIPELINE SUPPLIES & SVCS CO WLL
    Location: 5TH FLR, SH SOUD TOWER ( MASHREQ BANK BLDG ), GRAND HAMAD AVE,
    Phone: 44444438
    Timings:8.00AM-5.00PM
    Key Personnel:DR SYMON THOMAS , M D
  • 21 TRADING CONTRACTING & SERVICES WLL
    Location: UMM GHUWALINA,
    Phone: 30096036 - MOBILE
    Timings:8.00AM-8.00PM
    Key Personnel:MOHD AHSEN, C O O
    CALVIN FERNANDES, C E O


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VALVES & ACCESSORIES

Oilfield Valves & Instruments in Doha Qatar


Find below a list of the top products suppliers of Valves & Accessories in Doha, Qatar:

  • 317
    -
  • 3D
    - Valves
  • A + R
    - Lpg Valves
  • AAGS
    -
  • AB SANDVIK
    -

    • ELECTRICAL EQUIPMENT SUPPLIERS ELECTRICAL LIGHTING CO QATAR WLL SUPPLIERS IN DOHA QATAR
    • ELECTRICAL EQUIPMENT SUPPLIERS STAR TECHNO TRADING & CONTG EST SUPPLIERS IN DOHA QATAR
    • MEP SUPPLIES ASSOCIATED TECHNICAL TRADING WLL SUPPLIERS IN DOHA QATAR

  • ABCO
    - Directional Control Valves, Solenoid Operated Valves, Solenoid Operated Poppet Valves, Solenoid Operated Spool Valves, 4-way Proportional Hydraulic Valves, Pressure Compensator 2-way Stackable Valves, 4-way Manual Operated Valves, Screw-in 2-way Manual Operated Valves, Explosion Proof Solenoid Valves, Check Valves Stackable, Pilot Operated Check Valves Stackable, In-line Check Valves, In-line Shut-off Valves, Pressure Control Valves, Pressure Relief Valves, Pressure Reducing Valves, Flow Control Valves, By-pass Valves, Adjustable/fixed/pressure Compensated Flow Control Valves
  • ABEX
    -
  • ABO
    - Valves & Accessories
  • ABV SRL
    - Ball Valves
  • ACE
    -


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Author

Chantelle D'Mello

Chantelle D'mello is an avid writer with over four years of hard news experience as part of the award-winning Doha News team. She's previously worked at Al Jazeera and the Huffington Post, and hopes to bring her passion for writing to the Qatar Oil and Gas Directory.

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