Choke Valve serie
a combination of proven trim design to control flow velocity and to reduce noise
The Choke Valve serie
Today’s Oil & Gas harsh environment means higher wellhead pressures with aggressive fluids with entrained sand and other solid particles.
A conventional single stage choke valve might not be suitable for this kind of service.
The need to maintain production rates means that frequent choke repair or replacement is no longer acceptable.
HP faced this need developing its advanced severe service choke valve.
The choke uses a combination of proven trim design to control flow velocity and to reduce noise and the best grades of tungsten carbide material used in the industry to provide long trim life and precise process control.
The Choke Valve serie
| Component | Materials |
|---|---|
| Body | AISI 4130 ASTM A350 LF2 Duplex & Super Duplex ASTM A182 |
| Bonnet | As above |
| Disk stack | Solid tungsten carbide |
| Seat housing/insert | 17-4/Solid tungsten carbide |
| Plug | Solid tungsten carbide |
| Stem | 17-4PH, Inconel 718 |
| Seals | PTFE, Viton, Graphite |
| Body to bonnet seal | Buna, Viton |
Other materials available upon request
The Choke Valve serie
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Typical Applications
HydroPneumatic choke valves are typically the perfect solution for:
- Wellheads
- Drilling
- Water Injection
- Blowdown
- Production
- Heater Bypass
-
Features
- API 6A and ASME design
- Positive, Rotative, Needle, Disk & Cage design
- Pressure rating from ANSI 150 through API 15k Psi
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Flanged from 1’’ through 16’’ ANSI
(other ends connection available upon request) -
Flanged from 1’’ 13/16 through 11’’ API
(other ends connection available upon request) - Customized end to end dimensions
- PSL 1-4
- PR1-2
- API material classes from AA through HH
- API temperature classes from P/L through U
-
Material for H2 and CO2 service
in accordance with NACE MR01-75 latest edition - Extensive Range of Body/Trim Materials
- Forged bodies for maximum safety and reliability
- Tungsten Carbide wear resistant Trim
- Equipercentage or linear characteristic
- Actuation: Manual, single & double acting Pneumatic and Hydraulic, Stepping, Electric and Electro-hydraulic actuator
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Benefits
- One single piece body with integral flanges for long service life – no welding
- Heavy duty design to withstand service life
- Suitable for contaminated and corrosive fluids and high sand content
- Resistant against high pressure drops
- Flashing resistance
- Low noise design
- High seat tightness
- Fluid control with guaranteed fixed CV value
- High calibration
- Fugitive emission design
- Fire resistance
- Easy maintenance design
- Low life cycle costs
