Pneumatic Actuated PTFE Fluorine Lined Diaphragm Valve
Product Brief Introduction
Pneumatic Actuated PTFE Fluorine Lined Diaphragm Valve is equipped with Gemu type pneumatic actuator, composed of reciprocating piston cylinder and diaphragm valve. The up and down movement of the valve stem driven by the pneumatic actuator realizes opening and closing, so as to cut off or connect the medium in the pipeline. The inner fluorine plastic lining of the valve can resist corrosive media of various degrees.
Product Features
The valve adopts packing-free structure. The diaphragm isolates corrosive medium inside the flow channel from driving components. Smooth flow channel brings low flow resistance and large flow capacity. Multiple optional rubber and fluoroplastic linings on the inner cavity of valve body deliver excellent corrosion resistance. The elastic rubber diaphragm sealing element provides good sealing performance and low closing force.
Technical Parameters
Product Size: DN15-DN125 Applicable Temperature: ≤85℃, ≤100℃, ≤120℃, ≤150℃ (Depends on lining and diaphragm materials) Pressure Class PN (MPa): 0.6, 1.0, 1.6
Design & Manufacturing Standards
Design and Manufacturing: BS5156 Face-to-Face Dimension: BS5156 Flange Connection Dimension: BS4504, DIN2532, JIS B2212, ANSI B16.1, ISO2004
Working Principle
The opening and closing of Pneumatic Actuated PTFE Fluorine Lined Diaphragm Valve is realized by the up and down movement of valve stem driven by pneumatic actuator. When the valve stem moves upward, the spherical diaphragm bends upward to open the valve passage. When the valve stem moves downward, it drives the valve plug to bend the diaphragm tightly against the valve seat, cutting off the fluid passage of the pipeline.
Main Component Materials
No. | Name | Material |
1 | Valve Body | WCB, 304 |
2 | Bonnet | WCB |
3 | Diaphragm | EPDM, F46 |
4 | Disc | WCB, 304 |
5 | Cylinder | Aluminum Alloy |
6 | Piston | Aluminum Alloy |
7 | Valve Stem | 45# Carbon Steel, Stainless Steel 304 |
8 | Connection Type | Flanged |
Technical Specifications
Design Standard | Face-to-Face Standard | Flange Standard | Test & Inspection Standard | Marking Standard | Delivery Standard |
BS5156 | BS5156 | BS4504 | BS 13927 | BS 12220 | BS 7928 |
Overall Dimension Table
DN | Nominal Pressure | L | D | D1 | n-Φd | f | H | Air Supply Pressure (MPa) | Cylinder Outer Diameter ΦA | Valve Weight (KG) |
15 | 1.0 | 108 | 95 | 65 | 4-13.5 | 2 | 215 | 0.6 | 110 | 6 |
20 | 1.0 | 117 | 105 | 75 | 4-13.5 | 2 | 220 | 0.6 | 110 | 6.5 |
25 | 1.0 | 127 | 115 | 85 | 4-13.5 | 2 | 225 | 0.6 | 110 | 6.8 |
32 | 1.0 | 146 | 140 | 100 | 4-17.5 | 2 | 240 | 0.6 | 140 | 8 |
40 | 1.0 | 159 | 150 | 110 | 4-17.5 | 2 | 285 | 0.6 | 170 | 15 |
50 | 1.0 | 190 | 165 | 125 | 4-17.5 | 2 | 307 | 0.6 | 170 | 18 |
65 | 1.0 | 216 | 185 | 145 | 4-17.5 | 2 | 327 | 0.6 | 200 | 25 |
80 | 1.0 | 254 | 200 | 160 | 8-17.5 | 2 | 390 | 0.6 | 230 | 35 |
100 | 1.0 | 305 | 220 | 180 | 8-17.5 | 2 | 470 | 0.6 | 260 | 57 |
125 | 1.0 | 356 | 250 | 210 | 8-17.5 | 2 | 637 | 0.6 | 310 | 75 |
Product Application
Pneumatic Actuated PTFE Fluorine Lined Diaphragm Valve can be fitted with handwheel, limit feedback signal, positioner and other accessories to realize diversified functions. The inner cavity of valve body is separated from bonnet cavity, protecting valve body, disc and stem from medium corrosion and eliminating medium leakage. It is widely used in industrial automation systems for flow regulation of strong acid, strong alkali, highly corrosive, high viscosity, particle-containing, fiber-bearing and contamination-sensitive media, with functions of diversion, shut-off, regulation and throttling.
