The Spirax Sarco M33V ISO is a two-piece, full-port floating ball isolation valve compliant with API 6D for DN50-DN200 pipelines. It is available with ASME B16.5 Class 150/300 flanged connections and an ISO 5211 actuator mounting interface. The valve body is available in galvanized carbon steel or CF8M stainless steel, with an AISI 316 ball. It is suitable for sectional shutoff and automated isolation of hydrocarbon fluid and natural gas pipelines in refining and petrochemical processes. It is not intended for throttling or control service.
M33V ISO Full-Bore Floating Ball Valve, Three-Quarter View | Spirax Sarco
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M33V ISO Full-Port Floating Ball Valve (API 6D) | Spirax Sarco
Full-port floating ball isolation valve for sectional shutoff of hydrocarbon fluid and natural gas pipelines.
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Specifications
- Valve type
- Two-piece floating ball valve
- Bore configuration
- Full bore
- Valve function
- Isolation valve, not suitable for throttling or control
- Nominal sizes
- DN50, DN65, DN80, DN100, DN150, DN200
- Flanged connections
- ASME B 16.5 Class 150 or Class 300
- Face-to-face standard
- ASME B 16.10
- Actuator mounting standard
- ISO 5211
- Valve body design standard
- ASME B 16.34
- Maximum allowable pressure
- ASME Class 150: 19 bar g at 38°C; ASME Class 300: 51 bar g at 38°C
- Operating temperature range
- -29°C to 230°C at 0 bar g
- Maximum saturated steam pressure
- 10 bar g
- Cold hydraulic test pressure
- ANSI 150: 28.5 bar g; ANSI 300: 76.5 bar g
- Leakage class
- ISO 5208 Rate A / EN 12266-1 Rate A and BS 5351
- Antistatic standard
- ISO 7121 and BS 5351
- Valve body material
- Zinc-plated ASTM A216 WCB carbon steel or ASTM A351 CF8M stainless steel
- Ball material
- AISI 316 stainless steel
- Seat material
- PTFE, PDR 0.8
- Flow coefficient Kv
- DN50: 300; DN65: 430; DN80: 750; DN100: 1030; DN150: 2410; DN200: 4800
- Operating torque
- DN50: 75 Nm; DN65: 120 Nm; DN80: 190 Nm; DN100: 250 Nm; DN150: 720 Nm; DN200: 1150 Nm
- Pressure Equipment Directive
- Complies with 97/23/EC
Application scenarios
Hydrocarbon process line isolation in refining and petrochemical operations
Used for shut-off and isolation on most hydrocarbon fluid lines in OPC refining and petrochemical processes. This two-piece, full-bore floating ball valve is designed as an isolation valve and is not suitable for throttling or control.
Natural gas line isolation in refining and petrochemical operations
Used for sectional shut-off and isolation of natural gas process lines in OPC refining and petrochemical processes. The product documentation specifies that it is primarily intended for natural gas and other low-temperature applications and is designed as an isolation valve.
Automated isolation valve service
Used at isolation valve positions on natural gas or hydrocarbon fluid lines where an actuator is required for automatic opening and closing. The valve features an actuator mounting interface compliant with ISO 5211.
Selection points
Full-bore floating ball design
The valve features a two-piece, full-bore floating ball design. The Kv is 1030 for DN100 and 4800 for DN200, allowing flow capacity to be compared by nominal size.
ISO 5211 actuator mounting interface
The actuator mounting interface complies with ISO 5211 and can be used as a selection criterion for actuator compatibility and automated operation.
Carbon steel and stainless steel body options
The valve body is available in zinc-plated ASTM A216 WCB carbon steel or ASTM A351 CF8M stainless steel. Both configurations use an AISI 316 stainless steel ball.
Suitability for low-temperature isolation service
This product is intended for isolation rather than throttling or control. Its minimum operating temperature is -29°C, and selection should be based on the actual process medium and operating temperature.
Installation & maintenance notes
Do not use the valve for throttling or control
This valve is an isolation valve intended only for fully open or fully closed shut-off operation. It must not remain partially open for extended periods to regulate flow.
Isolate both sides, depressurize, and allow the valve to cool before maintenance
Before removing the valve or servicing its seals, isolate the upstream and downstream piping, confirm that pressure in the valve cavity and piping has been safely released, and allow the valve to cool before proceeding.
FAQ
How does the M33V ISO full-bore ball valve operate, and what is its intended process function?
The M33V ISO full-bore ball valve is a two-piece floating ball valve designed for isolation service and must not be used for flow control. It is used to isolate and shut down natural gas and most low-temperature hydrocarbon fluid lines in OPC refining and petrochemical processes.
What are the key considerations when selecting this valve?
Key considerations include the DN50-DN200 size range, flange rating (ANSI 150/300), body material (carbon steel or stainless steel), whether a hollow ball or self-venting ball is required, the actuator type (BAV300 series), and whether a locking handle or protective accessories are needed. The exact configuration must be confirmed against the specific model and application conditions.
Which international installation standards does the M33V ISO comply with?
The ANSI flange installation complies with the ISO 5211 dimensional requirements for ANSI 150/300, and the complete product complies with the European Pressure Equipment Directive 97/23/EC.
Which documentation and certificates are available, and how can they be obtained when ordering?
An EN 10204 3.1 certificate is available and must be specified when ordering.
How should alternative materials or additional options be confirmed?
Two valve body material options are available: zinc-plated WCB carbon steel and CF8M stainless steel. Optional features include an extended stem, locking handle, and drain port. The exact configuration must be confirmed against the specific model and application conditions.