How it works
Spring-return rotary actuator
Butterfly disc
The number that matters
Max. medium temperature
135°C
The highest medium temperature this valve is rated for.
Construction
Parts and materials
Applications
Media and industries
- Water
- Steam
- Neutral Media
- Food Industry
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-T-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 | Threaded (coupling) |
| Control Type | Pneumatic actuator |
| Tightness Class | A |
| Country of Manufacture | China |
| Warranty | 12 months |
Dimensions and dimensions of disc gate valves DNOVA WBV3131E-2W-T-H, body material - stainless steel AISI 304, seal - EPDM
| Size | D, mm | G, mm | D1, mm | A, mm | H, mm | J, mm | K, mm |
| DN15 | 15 | Rd34x1/8 | 78 | 66 | 86 | 126 | 8x8 |
| DN20 | 19 | Rd44x1/6 | 78 | 66 | 86 | 126 | 8x8 |
| DN25 | 25 | Rd52x1/6 | 78 | 66 | 86 | 126 | 8x8 |
| DN32 | 31 | Rd58x1/6 | 86 | 70 | 90 | 126 | 8x8 |
| DN40 | 37 | Rd65x1/6 | 90 | 74 | 92 | 126 | 8x8 |
| DN50 | 49 | Rd78x1/6 | 106 | 76 | 104 | 133 | 10x10 |
| DN65 | 66 | Rd95x1/6 | 124 | 80 | 113 | 144 | 10x10 |
| DN80 | 81 | Rd110x1/4 | 139 | 84 | 123.5 | 160 | 10x10 |
| DN100 | 100 | Rd130x1/4 | 159 | 104 | 133.5 | 160 | 10x10 |
Table of parts and materials for disc gate valves DNOVA WBV3131E-2W-C-H, body material - stainless steel AISI 304, seal - EPDM
| № | Part Name | Material |
|---|---|---|
| 1 | Body | Stainless steel AISI 304 |
| 2 | Rotary assembly | 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-C-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 |
| 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
- Body material
- Stainless steel AISI 304
- Maximum allowable temperature
- 135 °C
- Connection type
- Threaded
- Control type
- Pneumatic actuator
- Operating environment
- Water, Steam, and Neutral Media
- Applications
- Food Industry
- Type of seal
- EPDM
- Disc material
- Stainless steel AISI 304
- Manual override
- No
- Limit switches
- No
- Type of pneumatic actuator
- unilateral action
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal