Features of WCB PTFE Fully Lining Butterfly Valve
- WCB cast steel outer body, reliable strength
The outer valve body is made of WCB (ASTM A216) cast steel, which has high strength, good pressure resistance (precision casting, no blisters), exquisite appearance, and is suitable for medium pressure and temperature conditions. - Excellent corrosion resistance
The PTFE full lining (including valve body, valve disc and valve seat) can resist almost all chemical media, including concentrated sulfuric acid, hydrochloric acid, aqua regia, strong alkali and other highly corrosive fluids. Virtually impervious to most chemicals, far superior to ordinary rubber-lined or metal valves, suitable for highly corrosive environments. - High temperature resistance and wear resistance
PTFE material has a wide temperature range (usually -10°C to +180°C), strong wear resistance, and low friction coefficient to reduce component wear. - No risk of contamination
The fully lined PTFE WCB Buttefly valve ensures zero leakage. The PTFE material is highly inert, non-toxic and odorless. So this WCB PTFE Butterfly Valve is suitable for high-purity clean applications such as food and pharmaceuticals to avoid media contamination. - Easy to operate, small flow resistance
Two-piece (split) valve body for easy maintenance
The split design of the valve body makes it easy to disassemble and facilitate cleaning, maintenance or lining replacement. Compared to integrated valves, maintenance costs are lower and downtime is shorter. - High cost performance and applicable to a wide range of industries
Comprehensive anti-corrosion, sealing and maintenance advantages, long-term operation cost is low. This WCB PTFE Butterfly Valve is widely used in chemical industry, petroleum, electric power, water treatment, pharmaceutical, food and other occasions where anti-corrosion isolation is required.
Standard of Double Flanged WCB PTFE Butterfly Valve
| ITEM | Standard |
| Design | EN593 | API609 |
| Face to Face | EN558 | ISO5752 | API608 | BS5155-4 |
| Top Flange | ISO5211 |
| Flange Drilling | PN6 | PN10 | PN16 | ASME B16.5 CL150 | JIS 10K |
| Pressure Rating | PN6 | PN10 | PN16 | PN25 | CL150 | JIS 10K |
| Tightness Test | ISO5208 | API598 | EN12266-1 |
Parts Material of PTFE Lining WCB Butterfly Valve
| Parts | Ductile Iron type | WCB type | Stainless Steel Type | Duplex Stainless Steel Type |
|---|---|---|---|---|
| Body | Cast Iron(GG25) Ductile Iron(GGG40/50) |
A216 A217 A105(forged) |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M |
2205 2507 1.4529 |
| Disc | Ductile Iron with Ni coated Ductile Iron with nylon coated Ductile Iron with PTFE/EPDM lined Stainless Steel Duplex Stainless Steel Bronze |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M 2205 2507 1.4529 |
2205 2507 1.4529 |
|
| Seat | NBR, EPDM, PTFE, Viton, Hypalon, Silicon, PFA | |||
| Stem | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel | Duplex Stainless Steel, Monel | ||
| Actuator | Hand Lever, Worm Gear, Electric, Pneumatic | |||
Paraments of PTFE Lining Butterfly Valve
| DN (mm） |
L | øD1 | f | H1 | H2 | ø2 | ø3 | n-ød1 | T*T | H | øF | K | KEY |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN50 | 108 | 52.6 | 3 | 139 | 80 | 70 | 90 | 4-10 | 11 | 30 | —— | —— | —— |
| DN65 | 112 | 64.3 | 3 | 146 | 89 | 70 | 90 | 4-10 | 11 | 30 | —— | —— | —— |
| DN80 | 114 | 78.8 | 3 | 150 | 95 | 70 | 90 | 4-10 | 11 | 30 | —— | —— | —— |
| DN100 | 127 | 104 | 3 | 177 | 114 | 70 | 90 | 4-10 | 11 | 30 | —— | —— | —— |
| DN125 | 140 | 123.3 | 3 | 179 | 125 | 70 | 90 | 4-10 | 14 | 30 | —— | —— | —— |
| DN150 | 140 | 155.7 | 3 | 201 | 139 | 70 | 90 | 4-10 | 14 | 30 | —— | —— | —— |
| DN200 | 152 | 202.4 | 3 | 230 | 170 | 102 | 125 | 4-12 | 17 | 40 | —— | —— | —— |
| DN250 | 165 | 250.4 | 3 | 267 | 198 | 102 | 125 | 4-12 | 22 | 40 | —— | —— | —— |
| DN300 | 178 | 301.5 | 4 | 298 | 223 | 102 | 125 | 4-12 | 22 | 45 | —— | —— | —— |
| DN350 | 190 | 333.3 | 4 | 310 | 254 | 125 | 150 | 4-14 | 22 | 45 | —— | —— | —— |
| DN400 | 216 | 389.6 | 4 | 340 | 278 | 140 | 175 | 4-18 | 27 | 50 | —— | —— | —— |
| DN450 | 222 | 440.5 | 4 | 375 | 315 | 140 | 175 | 4-18 | 27 | 50 | —— | —— | —— |
| DN500 | 229 | 491.6 | 4 | 430 | 348 | 140 | 175 | 4-18 | 36 | 50 | —— | —— | —— |
| DN600 | 267 | 592.5 | 5 | 500 | 410 | 165 | 210 | 4-22 | 36 | 60 | —— | —— | —— |
| DN700 | 292 | 695 | 5 | 560 | 480 | 254 | 300 | 8-18 | —— | 80 | 63.35 | 72.15 | 18*70 |
| DN800 | 318 | 794.7 | 5 | 620 | 530 | 254 | 300 | 8-18 | —— | 80 | 63.35 | 72.15 | 18*70 |
| DN900 | 330 | 864.7 | 5 | 685 | 605 | 254 | 300 | 8-18 | —— | 100 | 75 | 84.8 | 20﹡90 |
Application of PTFE Fully Lining Butterfly Valve
- Chemical industry:
Transport highly corrosive chemicals such as strong acids (such as sulfuric acid, hydrochloric acid, nitric acid), strong alkalis, solvents, organic matter, aqua regia, etc. - Petrochemical industry
Handle corrosive crude oil derivatives, acid gases, and sulfur-containing media. - Pharmaceutical and cosmetics industry
High-purity medium transportation to avoid contamination. - Food and Beverage Industry
Food grade acidic or alkaline medium (such as acetic acid, citric acid). - Water treatment and wastewater treatment
Seawater desalination, waste acid/waste alkali treatment, disinfectant (such as sodium hypochlorite) pipelines. - Semiconductor and electronics industry
Ultrapure water (UPW) system. - Other industries
Power industry: corrosive slurries in flue gas desulfurization (FGD) systems.NOTE: Not suitable for: ultra-high pressure, high temperature pure steam or strong mechanical wear media (hard seal type can be considered).
Manufacture Process
Certificates of ZFA Butterfly Valve
WRAS
CE
ISO 9001
EAC Russia
