HG5-89-2 Bottom-discharging Feed Valve
I. Product Overview:
The HG5-89-2 bottom-discharge valve has a wear-resistant and corrosion-resistant sealing ring installed inside its valve body. When the valve is opened, this sealing ring protects the valve body from being eroded or corroded by the medium. The sealing ring undergoes special treatment to achieve a surface hardness of HRC 56-62, giving it excellent wear resistance and corrosion resistance. The sealing surface of the valve disc is surfaced with hard alloy as required, and the sealing pair adopts line sealing to ensure sealing reliability and prevent scaling. Additionally, the valve is designed with a short-stroke valve disc.
II. Product Features:
The bottom-discharge valve is designed with a flat bottom structure and V-shaped valve body according to actual needs, and offers two operating modes for the valve disc: lifting and lowering. The valve body is equipped with a wear-resistant and corrosion-resistant sealing ring, which protects the valve body from medium erosion and corrosion when the valve is opened. The sealing ring is specially treated to reach a surface hardness of HRC 56-62, providing high wear resistance and corrosion resistance. The sealing surface of the valve disc is surfaced with hard alloy as required, and the sealing pair uses line sealing to ensure sealing reliability and prevent scaling. It also adopts a short-stroke valve disc design. This valve is widely used in industries such as chemical, petroleum, metallurgy, pharmaceutical, pesticide, dye, and food processing.
III. Working Principle:
The opening and closing strokes differ, leading to variations in installation dimensions. Both the top-discharge and bottom-discharge valves have small opening and closing strokes, resulting in a relatively small installation height. The rotary rod structure has the smallest installation height, during which the plunger only rotates. The opening and closing status and position of the valve are determined by the opening and closing position indicator.
IV. Appearance and Dimensions:
Nominal Pressure PN(MPa) | Nominal Diameter DN(mm) | Upper Flange Size(mm) | Lower Flange Size(mm) | Seat Size(mm) | |||
D1 | D2 | D3 | D4 | D5 | D6 | ||
1.6 | 25 | 115 | 85 | 135 | 100 | 70 | 40 |
32 | 135 | 100 | 145 | 110 | 75 | 55 | |
40 | 145 | 110 | 160 | 125 | 100 | 65 | |
50 | 165 | 125 | 180 | 145 | 85 | 70 | |
65 | 180 | 145 | 195 | 160 | 135 | 90 | |
80 | 195 | 160 | 215 | 180 | 155 | 130 | |
100 | 215 | 180 | 245 | 210 | 195 | 135 | |
125 | 245 | 210 | 280 | 245 | 180 | 145 | |
150 | 280 | 240 | 335 | 295 | 210 | 185 | |
200 | 335 | 295 | 405 | 355 | / | / | |
V. Precautions
1. The valve shall be stored as a whole in a ventilated and dry warehouse. It is strictly prohibited to stack it or place it outdoors. Both ends of the valve's passage shall be plugged.
2. Before installation, carefully inspect the valve and remove any damage caused during transportation or storage.
3. Before installation, check whether the force on each screw is balanced and whether the lifting (movement) is flexible.
4. The valve shall be installed in a place without severe vibration or impact, and in a site that will not cause damage to the valve.
5. When the discharge is blocked, a metal rod or rigid tool can be used to clear the blockage. Be careful not to damage the contact surface between the valve disc and the sealing ring when using such tools.
6. Avoid alternating use of acidic and alkaline media as much as possible (except for neutralization reaction media), so as not to shorten the service life.
7. According to the medium performance and service life, regularly check the PTFE sealing ring at the top of the valve body and the PTFE sheet at the orifice. If damage is found, replace it in time before further use.
8. If damage to the valve surface is found, stop using it immediately. It can be repaired with special materials, or entrusted to a relevant manufacturer for repair.
| Machinery & Equipment/Valves/Discharge Valves | |
