Wholesale WCB micro resistance slow closing backflow preventer valve Manufacturer, Factories
Product Description
Product Specifications
Characteristics
This WCB tilting disc slow closing check valve is integrally cast from ASTM A216 carbon steel for high temperature and pressure resistance. Eccentric short-stroke disc with external hydraulic buffer realizes two-stage closing to eliminate water hammer and impact noise. Metal hard seal fits steam and hot oil service. Widely used in power plant, heating, boiler and petrochemical high-pressure high-temperature pipeline systems.
Advantages
Application Scenarios
This hydraulic pressure check valve widely used in power plant circulating cooling water systems, thermal steam heat exchange pipelines, boiler feed water lines, chemical heat transfer oil pump stations, industrial high-temperature hot water circulation, waste heat recovery piping and steam pressurized pump rooms.
Packing
Standard export wooden case packaging
Material of Main Parts
| Components Name | Valve Body | Valve Petal | Valve Lever, Cylinder, Piston | Spring | Valve Seat |
|---|---|---|---|---|---|
| Material | Cast iron, cast steel | Carbon steel | Stainless steel | Stainless steel | Ding nitrile rubber |
Main Dimensions
| DN (mm) | L | H | H1 |
|---|---|---|---|
| 40 | 140 | 200 | 88 |
| 50 | 150 | 215 | 98 |
| 65 | 170 | 225 | 108 |
| 80 | 180 | 235 | 118 |
| 100 | 190 | 280 | 130 |
| 125 | 200 | 290 | 148 |
| 150 | 210 | 310 | 172 |
| 200 | 230 | 350 | 210 |
| 250 | 250 | 415 | 240 |
| 300 | 270 | 450 | 264 |
| 350 | 290 | 480 | 297 |
| 400 | 310 | 550 | 324 |
| 450 | 330 | 585 | 351 |
| 500 | 350 | 640 | 379 |
| 600 | 390 | 720 | 434 |
| 700 | 430 | 780 | 491 |
| 800 | 470 | 840 | 549 |
| 900 | 510 | 990 | 600 |
| 1000 | 550 | 1050 | 655 |
| 1200 | 630 | 1210 | 770 |
Frequently Asked Questions
Q1: How does the tilting disc check valve reduce water hammer?
The valve features an eccentric short-stroke disc paired with an external hydraulic buffer, executing a two-stage slow closing process that significantly dampens shockwaves and suppresses water hammer noise.
Q2: What temperature range can this valve handle?
Standard working temperatures range from -20°C to 120°C. When manufactured with cast ASTM A216 WCB carbon steel, it can withstand extreme high temperatures up to 425°C.
Q3: What standards are followed for valve design and manufacturing?
Our check valves comply with EN, DIN, and API international standards, ensuring seamless integration into standard pipeline systems worldwide.
Q4: Can this valve replace existing old valves directly?
Yes. The standard flange dimensions allow direct replacement without requiring pipeline modifications or structural reconstruction, saving total transformation costs.
Q5: What packaging is used for international transport?
All products are packed in robust, standard export wooden cases to protect against damage during sea freight and logistics handling.
Q6: What is the sealing performance grade of this valve?
This tilting disc check valve offers single-directional sealing rated at zero leakage, ensuring reliable backflow prevention in high-pressure steam and hot oil applications.
