Description
Rotary disc gate valve is designed for use as shut-off or regulating valves for flow control in heat supply systems, water supply systems, in technological processes of food, chemical, oil and gas, pulp and paper and other industries. Operating principle: The valves are opened and closed by turning the disc by 90°. Opening is performed by turning the handle anti-clockwise, closing - clockwise.
Pneumatic actuator with return springs PA-SA-85 is designed for automation of the control process of quarter-turn pipeline valves. The principle of operation of the pneumatic actuator with return springs is based on the movement of the built-in piston due to compressed air, which is supplied to the system from the compressor line prepared. During operation, the cylinder piston performs a translational-rotational movement. Air is supplied from one side of the piston only, and the piston is returned by the action of a return spring. In such cylinders, the return spring reduces the forward force developed by the cylinder under the action of compressed air, and the force at the return to the initial position is determined by the stiffness and degree of compression of the spring.
Technical characteristics of disc gate valves DNOVA WBV3131E-2W-W-H, body material - stainless steel AISI 304, seal - EPDM
| Specification | Value |
|---|---|
| Valve Type | Rotary disc |
| Diameter | 15-100 mm |
| Nominal Pressure | 10 bar |
| Operating Medium Temperature | from -20 to +135°C |
| Application | Food industry |
| Connection Type | welded |
| Control Type | Pneumatic actuator |
| Tightness Class | A |
| Country of Manufacture | China |
| Warranty | 12 months |
Dimensions and dimensions of disc gate valves DNOVA WBV3131E-2W-W-H, body material - stainless steel AISI 304, seal - EPDM
| Size | D, mm | t, mm | D1, mm | A, mm | H, mm | J, mm | K, mm |
| DN15 | 18 | 1.5 | 78 | 50 | 86 | 126 | 8x8 |
| DN20 | 23 | 1.5 | 78 | 50 | 86 | 126 | 8x8 |
| DN25 | 29 | 1.5 | 78 | 50 | 86 | 126 | 8x8 |
| DN32 | 35 | 1.5 | 86 | 50 | 90 | 126 | 8x8 |
| DN40 | 41 | 1.5 | 90 | 50 | 92 | 126 | 8x8 |
| DN50 | 53 | 1.5 | 106 | 52 | 104 | 133 | 10x10 |
| DN65 | 70 | 2.0 | 124 | 56 | 113 | 144 | 10x10 |
| DN80 | 85 | 2.0 | 139 | 60 | 123.5 | 160 | 10x10 |
| DN100 | 104 | 2.0 | 159 | 64 | 133.5 | 160 | 10x10 |
Table of parts and materials for disc gate valves DNOVA WBV3131E-2W-W-H, body material - stainless steel AISI 304, seal - EPDM
| № | Part Name | Material |
|---|---|---|
| 1 | Body | Stainless steel AISI 304 |
| 2 | Rotary unit | Stainless steel AISI 304 |
| 3 | Disc | Stainless steel AISI 304 |
| 4 | Seat seal | EPDM or Silicon |
| 5 | Nut | Steel A2~70 |
| 6 | Bolt | Steel A2~70 |
| 7 | Plug | ABS plastic |
| 8 | Handle | Polyamide plastic |
Parts and materials sketch for disc gate valves DNOVA WBV3131E-2W-W-H, body material - stainless steel AISI 304, seal - EPDM
Technical parameters of pneumatic actuator DNOVA
| Specification | Value |
|---|---|
| Actuator Type | Single-acting |
| Actuator Torque | 26 Nm |
| Control Pressure | 4 ÷ 7 bar |
| Control Medium | Compressed air |
| Contamination Class | 6 (as per GOST 17433-80) |
| Closing / Opening Time at 6 bar | 2 / 2 sec |
| Average Lifespan | 500,000 opening/closing cycles |
| Air Supply | G1/8" |
| Ambient Temperature | from -20 to +60°C |
| Service Life | 10 years |
Dimensions and dimensions of pneumatic actuator DNOVA
| Model | C | D |
| PA-SA-85 | 147 | 85 |
Sketch of dimensions and dimensions of pneumatic actuator DNOVA
Parts and materials table for pneumatic actuator DNOVA
| № | Part Name | Material |
|---|---|---|
| 1 | Compressed Air Inlet Fitting | N/A |
| 2 | Retaining Ring | Stainless Steel 304 |
| 3 | Upper Cover | Stainless Steel 304 |
| 4 | O-Ring | NBR |
| 5 | O-Ring | NBR |
| 6 | Piston | Aluminum Alloy 4A11 (High Silicon Content – 4.5 to 6%) |
| 7 | Needle Bearing | N/A |
| 8 | Spring | Spring Steel 65Mn |
| 9 | Spring | Spring Steel 65Mn |
| 10 | Needle Bearing | N/A |
| 11 | Needle Bearing | N/A |
| 12 | Transmission Ring | Stainless Steel 304 |
| 13 | O-Ring | NBR |
| 14 | Needle Bearing | N/A |
| 15 | Body | Stainless Steel 304 |
| 16 | Silencer | Brass H62 |
Sketch of rotary pneumatic actuators DNOVA
Specifications
Delivery
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