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**Pneumatic Teflon Lined Diaphragm Valve for Flow Control**
This pneumatic Teflon lined diaphragm valve is designed for precise flow control and shut-off in corrosive environments. It is ideal for handling both liquid and gaseous media, especially in industrial applications where chemical resistance is essential.
**Key Features:**
- **Model No.:** G641PFA
- **Connection:** Flanged Diaphragm Valve
- **Structure:** Weir Type Diaphragm Valve
- **Flow Direction:** Bidirectional
- **Standards:** GB, ANSI
- **Materials:** WCB + PFA
- **Type:** Weir Diaphragm Valve
- **Packaging:** Wooden Crate
- **Origin:** Wenzhou, China
**Additional Specifications:**
- **Actuator:** Pneumatic
- **Material:** Cast Steel
- **Pressure Rating:** Low Pressure
- **Application:** Flow Control
- **Size Range:** DN15 to DN300
- **Operator:** Pneumatic
- **Brand:** YFM
- **Certifications:** TS, CE, SGS
- **HS Code:** 8481804090
**Technical Specifications:**
- **Design & Manufacturing:** ASME B16.34
- **End-to-End Dimensions:** HG/T3704
- **Flange Standard:** ASME/ANSI 16.5
- **Inspection & Testing:** API 598
**Product Specifications:**
- **Body Material:** A216/WCB, A351/CF8, A351/CF8M, A351/CF3, A351/CF3M, LCB, A536
- **Disc Material:** A216/WCB, A351/CF8, A351/CF8M, A351/CF3, A351/CF3M
- **Diaphragm Part:** EPDM + PFA, FEP
- **Lining Material:** PTFE, FEP, PFA, PO
- **Nominal Diameter:** NPS 1/2 - 16
- **Pressure Range:** 150lb, 300lb, JIS, DIN
- **Connection Type:** Flanged
- **Operation Method:** Handwheel, Worm Gear, Electric, Pneumatic, Hydraulic
**Product Description:**
The Youfumi lined diaphragm valve is a reliable solution for controlling and shutting off corrosive media in various industrial processes. Its robust design ensures long-term performance with minimal maintenance. The valve is easy to maintain and components can be replaced on-site without difficulty.
It is suitable for use with a wide range of corrosive substances, including molten alkali metals and fluorine elements. It is widely used in industries such as chlor-alkali, organic chemicals, metal processing, mining, fertilizers, petroleum refining, and pharmaceuticals.
However, it is not recommended for media containing hard particles, as they may damage the diaphragm and cause leaks. Also, frequent opening and closing may affect the sealing performance.
**Available Linings:** PFA, FEP, GXPO
**Operation Methods:** Manual, Worm Gear, Electric, Pneumatic, Hydraulic
**Customization Options:** Available in various sizes and materials based on application requirements.
**Material Specification:**
- Lock Screw: A320 B8
- Body Bolt: A320 B8
- Handwheel: A216 WCB; A351 CF8
- Sleeve: SS304
- Bonnet: A216 WCB; A351 CF8; A351 CF8M
- Stem Nut: Brass
- Stem: 2Cr13; A182 304; A182 316
- Adjustable Pad: SS304
- Disc: A216 WCB; A351 CF8; A351 CF8M
- Rubber Diaphragm: EPDM
- Diaphragm: PFA; FEP
- Body: A216 WCB + Lining; A351 CF8 + Lining; A351 CF8M + Lining
- Nut: A194 2H; A194 8; A194 8M
- Flat Washer: 45#; A182 304; A185 316
- Outer Hex Screw: A197 B7; A320 B8; A193 B8M
[Image 1: Teflon Lined Diaphragm Valve Pneumatic for Flow Control]
[Image 2: Teflon Lined Diaphragm Valve Pneumatic for Flow Control]
August 23, 2025