With pressure ratings to 15,000 psi, Cameron H2 needle-and-seat chokes handle standard, erosive, and corrosive service.
Once the desired flow rate is reached, the choke can be operated as a positive choke. This reduces wear on the wing or master gate valves because they are not used to control flow. In every application, the H2 choke delivers long life and low maintenance.
Nominal Size, in | Available Needle/Max. Orifice Size, in | Pressure Range, psi |
---|---|---|
Nominal Size, in 2 | Available Needle/Max. Orifice Size, in 1 | Pressure Range, psi 2,000–10,000; 15,000 |
Nominal Size, in 3 | Available Needle/Max. Orifice Size, in 2 | Pressure Range, psi 2,000–10,000 |
Nominal Size, in 4 | Available Needle/Max. Orifice Size, in 3 | Pressure Range, psi 2,000–5,000 |
API Material Class | Body | Bonnet | Choke Trim (Stem, Seat, and Bean) |
---|---|---|---|
API Material Class AA and BB: General service | Body Alloy steel | Bonnet Alloy steel | Choke Trim (Stem, Seat, and Bean) Stainless steel or stainless steel and tungsten carbide |
API Material Class CC: Nonsour, high CO2 | Body Stainless steel | Bonnet Stainless steel | Choke Trim (Stem, Seat, and Bean) Stainless steel or stainless steel and tungsten carbide |
API Material Class DD and EE: 0.5 sour, low CO2† | Body Alloy steel | Bonnet Alloy steel | Choke Trim (Stem, Seat, and Bean) Stainless steel and tungsten carbide |
API Material Class FF: 0.5 sour, high CO2† | Body Stainless steel | Bonnet Stainless steel | Choke Trim (Stem, Seat, and Bean) Stainless steel and tungsten carbide |
API Material Class HH: High H2S, high CO2† | Body Corrosion-resistant alloy | Bonnet Corrosion-resistant alloy |
Choke Trim (Stem, Seat, and Bean) Corrosion-resistant alloy and tungsten carbide |
† In compliance with NACE Standard MR0175