Fisher 657 & 667 Diaphragm – High-Performance Genuine Replacement Precision-Engineered for Optimal Actuator Performance

This genuine-quality replacement diaphragm is engineered exclusively for Fisher 657 and 667 spring-opposed diaphragm actuators. Its precision-molded design ensures maximum thrust output, fast response, and long-term reliability, restoring your actuator’s original performance for precise valve control.

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Product Description

Actuator ModelActuator SizeDiaphragm MaterialDiaphragm Part Number
657Size 30Molded Nitrile Rubber with Nylon2E791902202
657Sizes 34 & 40Molded Nitrile Rubber with Nylon2E670002202
657Sizes 45 & 50Molded Nitrile Rubber with Nylon2E859502202
657Sizes 46 & 60Molded Nitrile Rubber with Nylon2E859702202
657Sizes 70 & 87Molded Nitrile Rubber with Nylon2N126902202
657Size 80Molded Nitrile Rubber with Nylon1R6375X0072
657Size 100Molded Nitrile Rubber with Nylon20A2551X012
657Size 30Silicone Rubber with Polyester Fiber18B2713X082
657Sizes 34 & 40Silicone Rubber with Polyester Fiber18B2713X092
657Sizes 45 & 50Silicone Rubber with Polyester Fiber18B2713X102
657Sizes 46 & 60Silicone Rubber with Polyester Fiber18B2713X112
657Sizes 70 & 87Silicone Rubber with Polyester Fiber18B2713X122
657Size 80Silicone Rubber with Polyester Fiber18B2713X062
667Size 30Molded Nitrile Rubber with Nylon2E800002202
667Sizes 34 & 40Molded Nitrile Rubber with Nylon2E669902202
667Sizes 45 & 50Molded Nitrile Rubber with Nylon2E859602202
667Sizes 46, 60 & 76Molded Nitrile Rubber with Nylon2E859802202
667Sizes 70 & 87Molded Nitrile Rubber with Nylon2N130902202
667Size 80Molded Nitrile Rubber with Nylon2R6376X0082
667Size 30Silicone Rubber with Polyester Fiber18B2713X012
667Sizes 34 & 40Silicone Rubber with Polyester Fiber18B2713X022
667Sizes 45 & 50Silicone Rubber with Polyester Fiber18B2713X032
667Sizes 46, 60 & 76Silicone Rubber with Polyester Fiber18B2713X042
667Sizes 70 & 87Silicone Rubber with Polyester Fiber18B2713X052
667Size 80Silicone Rubber with Polyester Fiber18B2713X062
1052Size 33Not Specified2E7919
1052Size 40Not Specified2E6700
1052Size 60Not Specified2E8597
1052Size 70Not Specified2N1269
2052Size 1Not SpecifiedGE28042
2052Size 2Not SpecifiedGE31917
2052Size 3Not SpecifiedGE34829
GXSize 255Not SpecifiedGE52433
GXSize 750Not SpecifiedGE45499
Diaphragm Part NumberUpper Diaphragm Case Part NumberPush Rod Linkage Assembly Part NumberO-Ring Part Number
2E7919022022E79152899218A1243X0121D237506992
2E6700022022E7915289921F6592251421B885506992
2E859502202 18A1668X0121C415706992
2E859702202 1F6591251421D267306992
2N126902202 18A1668X0121D547106992
2E800002202 1F6591251421D269106992
2E669902202 18A1671X0121D267306992
2E859602202 2F1678000A21D547106992
2E859802202 18A1672X0121D269106992
2N130902202 18A1675X012O-Ring
2E7919X0022 18A1678X0121D237506992
2E6700X0012 18A1845X0121B885506992
2E8595X0022 21A8254X0121C415706992
2E8597X0032 21A7469X012 
2N1269X0012 18A1825X012 
2N1309X0012 12B6508X0A2 
1F354202402   
1F444302402   
1F354102402   
1F4444X0022   

Note:Please provide the product information you need to our sales team. We will contact you as soon as we receive your message.

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Excellence in Fluid Automation, Superior System Performance

–Powered by Premier Technical Expertise and One-Stop Services.

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.

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When purchasing industrial spare parts, do you pay attention to the following points?

✅ 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.

If any of the above points are crucial to you, please contact us immediately!
WhatsApp/Wechat: +86 18892208813
Email: 18892208813@163.com 
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