The Fisher™ easy-e™ EZ Control Valve is an ideal solution for throttling or on/off control, particularly suited for chemical, hydrocarbon processing, and any application requiring control of non-lubricating, viscous, or other hard-to-handle fluids .
The Fisher™ easy-e™ EZ Control Valve is an ideal solution for throttling or on/off control, particularly suited for chemical, hydrocarbon processing, and any application requiring control of non-lubricating, viscous, or other hard-to-handle fluids .
Engineered for reliability, its post-guided design minimizes the chance of plug sticking caused by non-lubricating process liquids or the accumulation of entrained solids, ensuring plug stability . The ENVIRO-SEAL™ packing system helps prevent process fluid leakage and complies with the Clean Air Act . Featuring a streamlined flow passage that provides higher capacity than most through-conduit valves of the same pipe size, and with trim options for low-flow requirements, the EZ Control Valve delivers versatile performance and easy maintenance .
| Feature | Description |
|---|---|
| Certifications | SIL, Fugitive Emissions, NACE |
| Primary Applications | Noise Abatement, Dirty Service, Erosive, Low Flow, Corrosive, General Service, Venting, Flashing |
| Flow Characteristics | Equal Percentage, Linear, Characterized, Quick Opening |
| Body Materials | Carbon Steel, Stainless Steel, Duplex, Alloys |
| Pressure Ratings | PN, ASME |
| End Connections | Flanged, Buttweld, RTJ, Threaded, Socket Weld |
| Shutoff Class | Class IV (FCI 70-2), Class V (FCI 70-2), Class VI (FCI 70-2) |
The Fisher™ easy-e™ EZ Control Valve is available in the following standard sizes to meet various application needs .
| Valve Size (NPS) |
|---|
| 1/2 |
| 3/4 |
| 1 |
| 1-1/2 |
| 2 |
| 3 |
| 4 |
Note: For more detailed technical specifications or configuration options, please contact our sales team.
If you have any questions or are unsure about the correct Fisher™ easy-e™ EZ model for your application, please do not hesitate to contact the Kateteco sales team. Our technical experts are ready to assist you.
Imported brand The product styles are rich anddiverse Professiona quality and service
KateTeco (Tianjin) Technology Co., Ltd. serves as an outstanding partner in the field of industrial fluid automation, specializing in the introduction and integration of high-end valves and instruments. We are committed to providing customers with safe, reliable, and intelligent system solutions. By leveraging global leading product resources and supported by systematic professional training and on-site technical assistance from Emerson’s experienced engineers, we ensure that customers can respond promptly and accurately to technical challenges.
With full lifecycle services covering installation, commissioning, operation, maintenance, and replacement, we deliver a true one-stop service system. This allows our customers to enjoy seamless, efficient, and high-quality assurance, supporting enterprises in achieving stable operation and continuous upgrades.
✅ Is it 100% genuine? —— We guarantee: All products are official and come with an 18-month warranty.
✅ Can it be delivered quickly? —— We promise: Provide fast global delivery services to ensure your project progress.
✅ Is expert support available? —— We offer: Full-process technical support, from selection guidance to installation and commissioning.
✅ Is the solution optimal? —— We ensure: Recommend the most reliable and cost-effective solution based on your specific needs.
The Fisher™ 657 Spring Diaphragm Actuator is a robust, direct-acting (air-to-open) pneumatic actuator engineered for reliable on/off or throttling control of valves in demanding industrial applications . It responds to a varying pneumatic output signal from a controller or valve positioner, precisely determining the position of the valve plug to ensure stable process control .
This actuator is part of the renowned Fisher 657 and 667 series (the 667 being the reverse-acting model) and is designed for long service life with minimal maintenance . Its key advantages include a molded diaphragm that operates within a deep head cover, minimizing the area change across the stroke and providing maximum thrust for its size . The shallow head cover on the pressure signal side reduces the volume that needs to be filled, which minimizes response time for faster control actions .
Built with a heavy-walled cast iron and cast steel structure, the 657 actuator offers excellent stability and corrosion resistance . It is versatile enough for use with globe valves and angle valves and can be equipped with various spring rates, travel stops, and manual override options to suit almost any control valve application .
High Thrust & Precision: The molded diaphragm provides high thrust for its size and ensures excellent linearity between the applied pressure and travel .
Fast Response: The shallow head cover design on the signal side minimizes cavity volume, leading to a shorter response time .
Rugged & Corrosion-Resistant: The heavy-walled cast iron and steel construction provides stability and withstands harsh industrial environments .
Integrated Mounting Pad: Eliminates the need for traditional mounting brackets, reducing the number of parts and simplifying installation, especially when paired with Fisher FIELDVUE™ instrumentation .
Versatile Compatibility: Compatible with traditional bracket-based mounting kits for instruments and accessories .
Wide Temperature Suitability: Available in low-temperature, standard, and high-temperature versions, with options suitable for temperatures as low as -50°C (-58°F) .
| Attribute | Specification |
|---|---|
| Product Series | Fisher™ 657 |
| Actuator Type | Spring-and-Diaphragm, Direct-Acting (Air-to-Open) |
| Operation | Linear |
| Control Type | On/Off, Throttling (Modulating) |
| Power Source | Pneumatic, Manual Override Available |
| Standard Diaphragm Pressure Ranges | 0.2-1.0 bar / 0.4-2.0 bar (Other ranges available for specific models) |
| Max. Supply Pressure | Up to 3.1 bar (45 psi) for some models |
| Environmental Rating | IP66 |
| Certifications | SIL, ATEX, CUTR, PED |
| Body Materials | Cast Iron, Cast Steel |
The table below summarizes the key specifications for various models within the Fisher 657 series to help you select the correct unit. The information is primarily based on data from .
| Model | Max. Travel (mm) | Spring Range (bar) | Max. Thrust (N) |
|---|---|---|---|
| 657-30i | 19 | 0.2-1.0 / 0.4-2.0 | 3890 |
| 657-34i | 25 | 0.2-1.0 / 0.4-2.0 | 5830 |
| 657-40i | 38 | 0.2-1.0 / 0.4-2.0 | 5530 |
| 657-45i | 51 | 0.2-1.0 / 0.4-2.0 | 8410 |
| 657-46i | 51 | 0.2-1.0 / 0.4-2.0 | 13190 |
| 657-50i | 51 | 0.2-1.0 / 0.4-2.0 | 8410 |
| 657-60i | 51 | 0.2-1.0 / 0.4-2.0 | 13190 |
| 657-70i | 76 / 102 | 0.2-1.0 / 0.4-2.0 | 18590 / 32030 |
| 657-87 | 80 / 100 | 0.2-1.0 / 0.4-2.0 | 32030 |
Operating Temperature Ranges:
Standard (Nitrile Rubber): -40°C to +82°C (-40°F to +180°F)
Optional (Silicone Diaphragm): -40°C to +149°C (-40°F to +300°F)
Enhanced for Low Temp: Can be used in temperatures as low as -50°C (-58°F)
Note:Please provide the product information you need to our sales team. We will contact you as soon as we receive your message.
Imported brand The product styles are rich anddiverse Professiona quality and service
KateTeco (Tianjin) Technology Co., Ltd. serves as an outstanding partner in the field of industrial fluid automation, specializing in the introduction and integration of high-end valves and instruments. We are committed to providing customers with safe, reliable, and intelligent system solutions. By leveraging global leading product resources and supported by systematic professional training and on-site technical assistance from Emerson’s experienced engineers, we ensure that customers can respond promptly and accurately to technical challenges.
With full lifecycle services covering installation, commissioning, operation, maintenance, and replacement, we deliver a true one-stop service system. This allows our customers to enjoy seamless, efficient, and high-quality assurance, supporting enterprises in achieving stable operation and continuous upgrades.
✅ Is it 100% genuine? —— We guarantee: All products are official and come with an 18-month warranty.
✅ Can it be delivered quickly? —— We promise: Provide fast global delivery services to ensure your project progress.
✅ Is expert support available? —— We offer: Full-process technical support, from selection guidance to installation and commissioning.
✅ Is the solution optimal? —— We ensure: Recommend the most reliable and cost-effective solution based on your specific needs.
