Description
Buy Flanged Diaphragm Valve G41F/G45F PN0.6-1.0 WCB Body PTFE Lined Manual Type
The G41F/G45F Diaphragm Valve by VALVEHU is designed for demanding industrial applications that require corrosion resistance, tight shut-off, and low maintenance. Featuring a fully-lined body with materials such as PTFE (F4), PFA, FEP (F46), and PO, this valve is ideal for handling aggressive chemicals, slurries, and highly viscous media in chemical, pharmaceutical, and food industries.
Constructed with a body of cast iron (HT250), carbon steel (WCB), or stainless steel (CF8, CF3, CF3M), the valve offers long service life and compatibility with a broad range of corrosive fluids. The inner lining options provide exceptional chemical resistance, while the diaphragm and bonnet materials are selected for enhanced mechanical durability and sealing integrity.
The G41F (straight type) and G45F (weir type) models support both manual and electric actuation, with options available for pneumatic control as well. The valves comply with major international standards such as GB/T 12239 for design, JB/T 79 for flange dimensions, and GB/T 13927 for pressure testing, ensuring quality and interchangeability.
Pressure ratings range from PN0.6 to PN1.0 MPa, and flanged ends make installation simple and secure across pipelines. Diaphragm valves like these are especially suited for applications where cleanliness and minimal contamination are critical, thanks to their cavity-free, dead-space-minimizing internal design.
If you are seeking a high-performance, corrosion-resistant valve solution, this model offers a reliable and efficient option. For guidance on selecting the correct diaphragm valve or any other industrial valve, contact the experts at VALVEHU in China — your trusted global valve supplier.
Technical Specifications
- Valve Type: Diaphragm Valve
- Models: G41F (straight) / G45F (weir)
- Body Material: Cast Iron HT250 / WCB / CF8 / CF3 / CF3M
- Lining Options: PTFE, PFA, FEP, PO
- Pressure Rating: PN0.6 / PN1.0 MPa
- Connection Type: Flanged
- Standards: GB/T 12239, JB/T 79, GB/T 13927
- Operation: Manual, Electric, Pneumatic
- Applications: Corrosive media, chemical and pharmaceutical industries
- Sizes Available: DN15 to DN300
Execution Standards
| Category | Standard Code |
|---|---|
| Design & Manufacturing | GB 12239 |
| Face-to-Face Dimensions | JB 1688 |
| Flange Dimensions | JB/T79 (or as per contract) |
| Pressure Testing | GB/T 13927 |
| Marking | GB 12220 |
| Supply Requirements | GB/T 12252 |
Basic Model Numbers (Fully Lined Type)
| Operation Type | Model Number | Description |
|---|---|---|
| Manual | G41F₃ | Globe Type, Lined |
| G41F₄₆ | Globe Type, F46 Lined | |
| G45F₃ | Straight Through, Lined | |
| G45F₄₆ | Straight Through, F46 Lined | |
| Electric | G9B41F₃ | Electric, Explosion-proof |
| G9B41F₄₆ | Electric, Explosion-proof, F46 | |
| Pneumatic | G641F₃ | Pneumatic, Reciprocating |
| G641F₄₆ | Pneumatic, Reciprocating, F46 | |
| G6B41F₃ | Pneumatic, Normally Closed | |
| G6B41F₄₆ | Pneumatic, Normally Closed, F46 | |
| Electric | G941F₃ | Electric, Standard Type |
| G941F₄₆ | Electric, Standard Type, F46 |
Main Component Materials
| No. | Part Name | Cast Iron (Z) | Carbon Steel (C) | Stainless Steel (P) | High-Grade Stainless Steel (R) | Ultra-Low Carbon SS (Pₗ) | Ultra-Low Carbon SS (Rₗ) |
|---|---|---|---|---|---|---|---|
| 1 | Body, Bonnet, Disc | HT250 | WCB | CF8 | CF8M | CF3 | CF3M |
| 2 | Stem | 35 | 1Cr13 | 1Cr18Ni9 | 1Cr18Ni12MO2Ti | 00Cr18Ni10 | 00Cr17Ni14Mo2 |
| 3 | Lining | FEP (F46) | PCTFE (F3) | PFA (Melt-Processable) | PFA (Melt-Processable) | PO (Polyolefin) | PO (Polyolefin) |
| 4 | Diaphragm | FEP (F46) / CR | PFA / CR | PFA / CR / EPDM | PFA / CR / EPDM | EPDM | EPDM |
| 5 | Stem Nut | ZCuAl10Fe3 | ZCuAl10Fe3 | ZCuAl10Fe3 | ZCuAl10Fe3 | ZCuAl10Fe3 | ZCuAl10Fe3 |
| 6 | Stud | 35 | 34 | 1Cr17Ni2 | 1Cr17Ni2 | 1Cr17Ni2 | 1Cr17Ni2 |
| 7 | Nut | 45 | 45 | 0Cr18Ni9 | 0Cr18Ni9 | 0Cr18Ni9 | 0Cr18Ni9 |
| 8 | Handwheel | HT200 | HT200 | WCC | WCC | WCC | WCC |
Main Connection Dimensions (PN0.6/1.0MPa) (Unit: mm)
| DN (mm) | NPS (inch) | L | D | D1 | D2 | f | b | Z–Φd | DO | H1 | H2 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 1/2 | 125 | 95 | 65 | 45 | 2 | 14 | 4–Φ14 | 100 | 105 | 110 |
| 20 | 3/4 | 135 | 105 | 75 | 55 | 2 | 16 | 4–Φ14 | 100 | 115 | 125 |
| 25 | 1 | 145 | 115 | 85 | 65 | 2 | 16 | 4–Φ14 | 120 | 125 | 135 |
| 32 | 1 1/4 | (160) | 135 | 100 | 78 | 2 | 18 | 4–Φ18 | 120 | 135 | 150 |
| 40 | 1 1/2 | 180 | 145 | 110 | 85 | 3 | 18 | 4–Φ18 | 140 | 135 | 175 |
| 50 | 2 | 210 | 160 | 125 | 100 | 3 | 20 | 4–Φ18 | 140 | 155 | 195 |
| 65 | 2 1/2 | 250 | 180 | 145 | 120 | 3 | 22 | 4–Φ18 | 200 | 170 | 225 |
| 80 | 3 | 280 | 195 | 160 | 135 | 3 | 22 | 4/8–Φ18 | 200 | 200 | 255 |
| 100 | 4 | 350 | 215 | 180 | 155 | 3 | 22 | 8–Φ18 | 280 | 270 | 325 |
| 125 | 5 | 400 | 245 | 210 | 185 | 3 | 26 | 8–Φ23 | 320 | 335 | 405 |
| 150 | 6 | 480 | 280 | 240 | 210 | 3 | 28 | 8–Φ23 | 360 | 370 | 450 |
| 200 | 8 | 570 | 335 | 295 | 265 | 3 | 28 | 8–Φ23 | 400 | 430 | 600 |
| 250 | 10 | 622 | 405 | 355 | 320 | 3 | 28 | 12–Φ23 | 500 | 545 | 620 |
| 300 | 12 | 790 | 440 | 368 | 440 | 3 | 28 | 12–Φ23 | 500 | 585 | 680 |
FAQ
What is the main advantage of using a diaphragm valve for corrosive fluids?
The non-metallic lining and isolated diaphragm prevent fluid contact with metal parts, offering superior corrosion resistance.
Can the G41F/G45F diaphragm valve handle high-viscosity media?
Yes, it is ideal for viscous, abrasive, and slurry-type media due to its straight-through or weir-type flow path.
Is this valve suitable for automated operation?
Yes, it supports electric and pneumatic actuators in addition to manual operation.
What is the pressure rating of the G41F/G45F valve?
It supports PN0.6 MPa and PN1.0 MPa, making it suitable for low to medium pressure systems.
Which industries typically use PTFE-lined diaphragm valves?
Chemical processing, water treatment, pharmaceutical production, and food manufacturing due to their hygiene and corrosion resistance.
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