Swing Disc Gate Valve with tungsten carbide Seat FRZ643Y
FREE-VALVE Swing Disc Gate Valve are designed for pressurized and vacuum systems including pneumatic conveying systems, discharge and vent applications in steel plant and coal power. The whole of ceramic sealing faces of the valves are well ground and polished, which is ensure a reliable sealing performance of the valve.
FREE-VALVE Tungsten Carbide Swing Disc Gate Valve are designed for pressurized and vacuum systems including pneumatic conveying systems, discharge and vent applications in steel plant and coal power. The whole of tungsten carbide sealing faces of the valves are well ground and polished, which is ensure a reliable sealing performance of the valve.
Features
- The cylinder piston rod does not contact with the medium directly, which greatly prolongs the service life of the cylinder and has a higher service temperature without damaging the cylinder.
- The sealing faces of the valve are made of toughened engineering ceramics with good abrasion resistance and prolonged service life.
- Product with customized structural length and connection size is available.
- The valve disc rotational motion can avoid the ash deposition on the sealing surface during opening and closing, so the valves have much longer service.
- The valve body outlet end adopts slant structure, which is advantageous to the medium entering the valve cavity to fall automatically, preventing the medium in the valve cavity accumulation and causing the valve not to open properly.
- The spring between the disc and disc seat is loaded with a floating connection. The spring force of the disc always matches the valve seat, ensures the sealing of the valve, and also helps to compensate for expanding when heated and contracting when cooled ,and sealing surface wear.
Technical Specification:
1) Size Range: NPS4~NPS12,DN50~DN300
2) Pressure Range: Class 150 /PN6 /PN10
3) Applicable Temperature: 0~200℃
4) Connection Type: Flange
5) Sealing material: Tungsten carbide
6) Pressure test:GB/T13927, API598
7) Face to Face: GB/T12221, ASME B16.10
8) Valve body : GB/T12224,ASME B16.34
Operating Type: Pneumatic
Main outline and connection dimensions
| DN | PN | L | D | D1 | D2 | n-∅d |
| DN125 | PN10 | 265 | 250 | 210 | 186 | 8-∅18 |
| DN150 | PN10 | 265 | 285 | 240 | 210 | 8-∅22 |
| DN200 | PN10 | 305 | 340 | 295 | 266 | 8-∅22 |
| DN250 | PN10 | 340 | 395 | 350 | 320 | 12-∅22 |
| DN300 | PN10 | 340 | 440 | 400 | 370 | 12-∅22 |
Note:Face to Face dimension “L” can be customized according to customer requirements
Application:
FREE-VALVE Pneumatic tungsten carbide Swing Disc Gate Valve are suitable for steel plant, cereals transport system, cement transport systems and EP system in coal fired power plant. In these applications, pneumatic conveying method is used to reduce manpower demand, and improve system efficiency and reliability, and is easy to realize automation.The Tungsten Carbide swing Gate Valve is a gate valve with tungsten carbide seat and disc, recognized for high hardness and wear resistance. It is utilized in industrial applications to on/off fluid flow, especially in environments requiring superior resistance to abrasion and erosion.
1. Why Standard Valves Fail in Abrasive Service?
In abrasive slurry pipelines, every time the swing disc valve opens or closes, abrasive particles trapped between the disc and seat create micro-gouges. Over time, these scratches accumulate and the disc surface degrades — leading to seat leakage, Erosion of the seat and disc, and ultimately valve replacement.
2. How Tungsten Carbide Sealing material forms?
Tungsten carbide plates or rings are used for the valve plate or valve seat, which are either pressed into place or bonded to the substrate through interference fit or adhesion.
