Lined check valve
I. Introduction:
The H42F46 fluorine-lined check valve mainly uses a rubber ball as the disc. Under the action of the medium, it can roll up, down, left and right on the integral slideway inside the valve body, thereby opening or closing the valve. It features silent closing without water hammer and good sealing performance. The valve body adopts a full flow channel, ensuring large flow, low resistance, and a head loss 50% lower than that of swing check valves. It can be installed horizontally or vertically, and is suitable for cold water, hot water, industrial and domestic water pipeline systems, especially for submersible drainage pumps. The medium temperature ranges from 0 to 150°C. A check valve is a valve that automatically prevents fluid backflow. The disc of the check valve opens under the action of fluid pressure, allowing fluid to flow from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the disc automatically closes under the combined action of fluid pressure difference and its own gravity to prevent fluid backflow.
II. Design Specifications:
Complies with GB/T 13932, GB12235, GB12236, and API 6D standards
Flanged check valves
Design and manufacturing conform to Chinese national standards
Basic structural form: Vertical lift type. (New type)
Main parts: Except for the disc which is made of solid F3 or F46, other materials are listed in Table A15
Nominal pressure: 0.6~1.0 (MPa)
Nominal diameter: DN25~150 (mm)
Nominal model: H40F3 H40F46
III. Technical Parameters and Execution Standards:
Straight-through lift type | Vertical lift type | Wafer-type vertical lift type | Single-disc swing type | Double-disc swing type | Butterfly type | |
Nominal diameter (mm) | DN15~500 | 15~500 | DN15~300 | DN15~500 | DN50~1200 | DN200~1800 |
Nominal pressure (MPa) | PN0.6~1.6 | PN0.6~1.6 | PN0.6~2.5 | PN0.6~2.5 | PN0.6~4.0 | PN0.6~1.6 |
Valve material | Gray cast iron, carbon steel, stainless steel | |||||
Lining material | PTFE (F4), FEP (F46), PCTEF (F3), PVDF (F2), GXPP, GXPO, UHMW-PE | GXPO | ||||
Applicable medium | Refer to anticorrosive lining materials for details | |||||
Working temperature (℃) | ||||||
Design and manufacturing | GB/T13932-1992, GB/T12235-1989, Q/ZXD 01-1999, API6D | |||||
Structural length | GB/T 12221-1989 | |||||
Connecting flanges | JB/T 82.1-94, GB/T9113.1-2000 | |||||
Pressure test | GB/T 13927-1992 | |||||
IV. Parts Materials:
Part Name | Material |
Upper and lower valve bodies | Cast iron, cast steel, stainless steel, lined with F46, F3 |
Disc | Cast steel, stainless steel, lined with F46, F3 |
Gasket | F4 |
| Machinery & Equipment/Valves/Check Valves | |
