SLEEVE TYPE SOFT-SEALING PLUG VALVE
EF52
- PTFE sleeve soft-sealing design for two-way flanged isolation service.
- ANSI Class 150, 300, 600 and 900 configurations, with class-dependent size availability.
- Available in Stainless Steel, AISI 904L, Super Duplex, Hastelloy and Titanium.
Applications
Configured Service Scope
Chemical Processing
Corrosive Service
Oil & Gas
Petrochemical
Seawater / Desalination
Water Treatment
Key Specifications
NOMINAL SIZESDN15 to DN350 (NPS 1/2 to 14), pressure-class dependent
PRESSURE RATINGSANSI Class 150 / 300 / 600 / 900
CLASS 900 SIZE RANGEDN15 to DN100 (NPS 1/2 to 4)
SLEEVEPTFE
BODY / COVERStainless Steel / AISI 904L / Super Duplex / Hastelloy / Titanium
OPERATIONWrench or worm gear, size dependent
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FAQs
A PTFE sleeve plug valve is primarily used for on-off isolation in process pipelines, particularly where reliable shut-off and resistance to corrosive or aggressive media are required.
The PTFE sleeve forms the main sealing interface around the plug, providing a soft-seated design suitable for a wide range of industrial and chemical process applications.
Final suitability depends on the actual fluid, temperature, pressure and material configuration.
A sleeve plug valve can be considered where the characteristics of the process, sealing arrangement or operating conditions make a plug valve configuration preferable to a conventional ball valve.
The PTFE sleeve provides continuous sealing around the plug, while the quarter-turn design provides straightforward on-off operation.
The correct choice between a plug valve and a ball valve should be based on the fluid, operating conditions, required sealing performance and project specifications.
PTFE is widely used because of its low friction and broad chemical resistance.
In a sleeve plug valve, the PTFE sleeve surrounds the plug and provides the sealing interface between the plug and valve body.
This combination can be particularly useful in chemical and corrosive applications where both reliable shut-off and resistance to the process medium are important.
The EF52 can be considered for corrosive chemical service when the selected body, plug, sleeve and other wetted materials are compatible with the process fluid.
PTFE provides broad chemical resistance, while corrosion-resistant metallic materials can be selected according to application requirements.
Final material selection should consider the actual chemical composition, concentration, temperature, pressure and operating conditions.
ABOUT EF52
The EF52 ANSI sleeve type soft-sealing plug valve is a two-way flanged isolation valve built around a PTFE sleeve that provides the sealing interface between the valve body and plug. The supplied catalogue defines ANSI Class 150, 300, 600 and 900 configurations, with size availability depending on pressure class.
Available material configurations include Stainless Steel, AISI 904L, Super Duplex, Hastelloy and Titanium for corrosive, demanding and critical process duties. Final material selection is confirmed against the fluid, operating pressure, temperature and project specification.
The EF52 ANSI version may be supplied with wrench or worm-gear operation. Final dimensions, weight, material combination and operator selection must be confirmed against the required nominal size and pressure class.
Frequently Asked Questions
A PTFE sleeve plug valve is primarily used for on-off isolation in process pipelines, particularly where reliable shut-off and resistance to corrosive or aggressive media are required.
The PTFE sleeve forms the main sealing interface around the plug, providing a soft-seated design suitable for a wide range of industrial and chemical process applications.
Final suitability depends on the actual fluid, temperature, pressure and material configuration.
A sleeve plug valve can be considered where the characteristics of the process, sealing arrangement or operating conditions make a plug valve configuration preferable to a conventional ball valve.
The PTFE sleeve provides continuous sealing around the plug, while the quarter-turn design provides straightforward on-off operation.
The correct choice between a plug valve and a ball valve should be based on the fluid, operating conditions, required sealing performance and project specifications.
PTFE is widely used because of its low friction and broad chemical resistance.
In a sleeve plug valve, the PTFE sleeve surrounds the plug and provides the sealing interface between the plug and valve body.
This combination can be particularly useful in chemical and corrosive applications where both reliable shut-off and resistance to the process medium are important.
The EF52 can be considered for corrosive chemical service when the selected body, plug, sleeve and other wetted materials are compatible with the process fluid.
PTFE provides broad chemical resistance, while corrosion-resistant metallic materials can be selected according to application requirements.
Final material selection should consider the actual chemical composition, concentration, temperature, pressure and operating conditions.
The EF52 can be considered in different corrosion-resistant metallic materials according to application requirements and manufacturing feasibility.
Options can include AISI 904L, Super Duplex, Hastelloy and other special alloys, depending on valve size, pressure class and configuration.
The appropriate alloy should be selected according to the actual process fluid and corrosion conditions.
PTFE sleeve plug valves are widely applicable to chemical processing and fertilizer-related services where on-off isolation and resistance to aggressive media are required.
Suitability depends on the specific chemical service, concentration, temperature, pressure and selected valve materials.
For demanding chemical applications, these process conditions should be identified during the RFQ stage so that the appropriate configuration can be evaluated.
The EF52 is available in different ASME pressure classes depending on valve size and end-connection configuration. The documented range includes Class 150, 300, 600 and, for certain configurations, Class 900. Availability should be confirmed for the required size, connection and material.
Sleeve-type soft-sealing plug valve designs can provide bidirectional flow capability, simplifying installation where flow direction may vary.
For any project where bidirectional operation is a specific technical requirement, this should be identified in the RFQ so that the proposed EF52 configuration can be confirmed accordingly.
The sleeve-type plug valve design minimizes internal areas where process media can accumulate compared with valve constructions containing larger internal cavities.
The sealing arrangement around the plug also provides a wiping or self-cleaning effect as the plug rotates.
This can be beneficial for process media where deposits or product accumulation are a concern.
As the plug rotates, the interaction between the plug and sleeve helps to wipe the sealing surfaces, reducing the tendency for process media to remain on the sealing interface.
This characteristic can be useful in services involving fluids that may leave deposits or residues.
Actual performance still depends on the characteristics of the process fluid and operating conditions.
The main information normally required includes:
- Process fluid
- Fluid concentration or composition where relevant
- Operating and design pressure
- Operating and design temperature
- Valve size
- Required ANSI / ASME pressure class
- Required body and trim materials
- Required end connections
- Operating method
- Applicable project specifications
For project applications, any inspection, testing or documentation requirements should also be identified during the RFQ stage.
Delivery time depends on the material, size, pressure class, quantity, configuration and project requirements.
Standard material configurations may have shorter availability, while exotic alloys, higher pressure classes or project-specific requirements can require additional manufacturing time.
The applicable delivery time is confirmed with each quotation.
Yes. EFSVALVES can coordinate logistics and international delivery according to the agreed supply conditions and project requirements.
The applicable logistics scope can include suitable export preparation, shipping documentation and coordination of international transport according to the agreed terms of supply.
Yes. Inspection and testing before delivery can be arranged when required as part of the agreed project scope.
Customer or third-party inspection can also be considered according to the applicable project requirements.
Specific inspection requirements should preferably be identified during the RFQ stage so that their scope can be evaluated and agreed.
Yes. The EF52 can be supplied within EPC and project-managed environments where defined engineering, quality, inspection and documentation requirements apply.
Depending on the agreed project scope, requirements may include data sheets and drawings, inspection and test documentation, material traceability, documentation schedules and coordination of project-specific technical requirements.
These requirements should preferably be identified during the RFQ stage.
For project applications, the documentation and quality scope can be adapted to the agreed requirements.
Depending on the specified scope, this may include:
- Material certificates
- PMI reports where required
- Applicable NDT reports
- Pressure test records
- Inspection documentation
- Data sheets and dimensional drawings
- Material traceability documentation
Any specific PMI, NDT, third-party inspection or additional traceability requirements should preferably be identified during the RFQ stage so that their applicability and scope can be evaluated and agreed.