Drinking Water Sealing Scenarios and Rubber Sealing Parts

a. Basic Structure

Tap water flows through the water meter (for metering), the main valve (system switch), and the pre-filter (to intercept sediment and rust) in sequence, forming a basic protection system.

b. Central Water Purifier

It is usually installed in the kitchen, living room, or equipment room. Its function is to further remove harmful substances such as residual chlorine, organic matter, and some heavy metals in the water to improve the water quality. Its sealing design ensures the water treatment process, prevents the bypass leakage of untreated water, and ensures the effective removal of pollutants such as residual chlorine and heavy metals. The peroxide EPDM diaphragm valve disc (with a thickness of 1.5mm) controls the backwash cycle, and the flow accuracy is ±5%.

c. Terminal Direct Drinking Water System

The terminal water purifier is generally installed under the kitchen sink. It deeply purifies the water to make it reach the standard for direct drinking. The connection between the terminal water purifier and the direct drinking water faucet needs to be precisely sealed to avoid water leakage and external pollution, and to ensure that the effluent water quality reaches the direct drinking standard. The VMQ O-ring (with a cross-sectional diameter of 3.5mm) seals the reverse osmosis membrane housing to ensure that the salt rejection rate > 99%.

d. Water Softener

The water softener is applied in both the kitchen and the bathroom. Its main function is to remove calcium and magnesium ions in the water, reduce the water hardness, make the water softer, and is beneficial to the skin and clothes. During the operation of the water softener, operations such as ion exchange are required, and the internal pipeline connections, valves, and other parts all need reliable sealing to ensure the normal operation of the water softener and the stability of the water quality. If the sealing is not good, problems such as brine leakage or unqualified soft water hardness may occur.

Ship Engineering

EPDM rubber sealing parts are used in the seawater desalination system, with a chlorine ion resistance concentration > 20,000ppm. EPDM sealing parts are not only resistant to seawater corrosion but also can adapt to the vibration and temperature changes of the ship under different navigation conditions, ensuring the tightness of the pipeline system and preventing liquid leakage and equipment damage.

Ocean Engineering

On offshore platforms, various equipment and facilities are in a harsh marine environment for a long time. EPDM sealing parts can be used for the pipeline connections, equipment sealing, and other parts on the platform to resist the erosion of seawater, sea breeze, salt spray, etc., and ensure the normal operation of the offshore platform and the safety of the staff.

Building Water Supply and Drainage System

In the water supply and drainage pipelines of large buildings, EPDM sealing parts are commonly used in pipeline connection parts such as elbows, tees, and flanges. It can effectively prevent pipeline water leakage and ensure the stable water supply and drainage inside the building. For example, in commercial complexes, office buildings, and other buildings, a large number of water supply and drainage pipeline systems require reliable sealing. EPDM sealing parts can work stably for a long time due to their good water resistance and aging resistance. Moreover, in some underground water supply and drainage pipelines, EPDM sealing parts can resist the erosion of moisture, microorganisms, and chemical substances in the soil, ensuring the tightness and service life of the pipeline system.

Municipal Pipe Network

The EPDM wedge-shaped sealing ring (with a compression force of 15-20N/mm) is used for the interface of DN1200 ductile iron pipes, which has passed the ISO 2531 K9 level pressure test. In the entire process of water intake from the water source, purification treatment, and water distribution in urban waterworks, EPDM sealing parts are applied to various equipment and pipelines. For example, in the sealing parts of equipment such as water pumps, valves, and water storage tanks, it can prevent water leakage and the entry of external impurities, ensuring the safety and stability of urban water supply. In the urban water supply network, EPDM sealing parts are used to connect pipelines of different diameters to ensure the tightness of the network and reduce the waste of water resources.