{"id":15014,"date":"2026-10-08T07:59:01","date_gmt":"2026-10-08T07:59:01","guid":{"rendered":"https:\/\/anphuthanhvalve.com\/?post_type=product&p=15014"},"modified":"2026-10-08T08:06:06","modified_gmt":"2026-10-08T08:06:06","slug":"ydk-water-hammer-arrester-valve-kwh-10k","status":"publish","type":"product","link":"https:\/\/anphuthanhvalve.com\/en\/ydk-water-hammer-arrester-valve-kwh-10k\/","title":{"rendered":"YDK WATER HAMMER ARRESTER VALVE | MODEL: KWH-10K"},"content":{"rendered":"

Hydraulic shock (water hammer) occurs when a valve closes suddenly or a pump stops unexpectedly, creating a pressure wave that surges many times above normal and propagates through the pipeline. This can easily crack or burst pipes, damage valves and flanges, and shake the entire system. The YDK water hammer arrester valve, Model KWH-10K<\/strong>, is a technical solution that absorbs the shock pressure and protects water supply and industrial piping systems.<\/p>\n

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The YDK water hammer arrester valve, Model KWH-10K<\/figcaption><\/figure>\n

General information on the YDK KWH-10K water hammer arrester valve<\/h2>\n

A water hammer arrester valve (also called an anti-surge valve) is a device installed on a pipeline to absorb and dissipate sudden pressure waves (water hammer). It is a valve type that uses an air cushion combined with a disc mechanism to absorb shock. The YDK KWH-10K water hammer arrester valve consists of 4 main parts:<\/p>\n

\n\n\n\n\n\n\n\n\n
No.<\/th>\nComponent<\/th>\nMaterial<\/th>\nFunction<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nBody<\/td>\nCast iron<\/td>\nMain pressure-bearing shell, forms the air cushion chamber, with a flange for connection to the pipeline<\/td>\n<\/tr>\n
2<\/td>\nCushion<\/td>\nNBR<\/td>\nElastic cushioning part that directly absorbs and dampens the energy of the pressure pulse when the shock wave arrives<\/td>\n<\/tr>\n
3<\/td>\nDisc seat<\/td>\nSynthetic rubber<\/td>\nSealing ring between the disc and the body, ensuring the valve is tightly closed in normal conditions<\/td>\n<\/tr>\n
4<\/td>\nAir nozzle<\/td>\nCopper alloy HPb59-2<\/td>\nInlet\/adjustment port for the air cushion pressure inside the shock-absorbing chamber, used for the initial air charge or for periodic checking\/topping up of air pressure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Construction table of the YDK KWH-10K water hammer arrester valve<\/em><\/p>\n

Dimension table of the YDK water hammer arrester valve, Model KWH-10K<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n
DN<\/th>\nD (mm)<\/th>\nD1 (mm)<\/th>\nZ x \u03a6d<\/th>\nb (mm)<\/th>\nH (mm)<\/th>\n<\/tr>\n<\/thead>\n
40<\/td>\n140<\/td>\n105<\/td>\n4 – \u03a619<\/td>\n18<\/td>\n154<\/td>\n<\/tr>\n
50<\/td>\n155<\/td>\n120<\/td>\n4 – \u03a619<\/td>\n18<\/td>\n165<\/td>\n<\/tr>\n
65<\/td>\n175<\/td>\n140<\/td>\n4 – \u03a619<\/td>\n20<\/td>\n165<\/td>\n<\/tr>\n
80<\/td>\n185<\/td>\n150<\/td>\n8 – \u03a619<\/td>\n20<\/td>\n175<\/td>\n<\/tr>\n
100<\/td>\n210<\/td>\n175<\/td>\n8 – \u03a623<\/td>\n21<\/td>\n185<\/td>\n<\/tr>\n
125<\/td>\n250<\/td>\n210<\/td>\n8 – \u03a623<\/td>\n21<\/td>\n201<\/td>\n<\/tr>\n
150<\/td>\n280<\/td>\n240<\/td>\n8 – \u03a623<\/td>\n23<\/td>\n227<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

(*) The specifications of products in this catalogue may be changed without prior notice.<\/em><\/p>\n

Operating principle of the YDK water hammer arrester valve (KWH-10K)<\/h2>\n

In operation, the YDK water hammer arrester valve goes through 4 states:<\/p>\n

1. Normal state (no pressure surge)<\/h3>\n

When the system is operating steadily, the water pressure in the pipeline remains at its normal level. The disc inside the valve is in a closed\/balanced state, and the air cushion chamber above holds a pre-charged amount of compressed air, filled through the 1\/8″ nozzle during installation. This air volume acts as an “air spring”, always ready to absorb shock.<\/p>\n

2. When water hammer occurs<\/h3>\n

When the flow velocity changes suddenly, for example:<\/p>\n