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L STYLE WATER HAMMER ARRESTER

L STYLE WATER HAMMER ARRESTER

L STYLE WATER HAMMER ARRESTER

Product catalog summary
Specifications:
  • The L style water hammer arrester is designed to guide flow and stabilize pressure, particularly effective at pipe corners where water hammer is most pronounced.
  • It absorbs the water hammer effect in two ways, providing excellent results.
  • Applicable for fluids with temperatures ranging from -15 to 80°C.
  • Diaphragm materials include NBR and Viton.
  • Normal air chamber pressure is 2.5 kgf/cm².
  • Test pressures vary by material: Cast Iron (21 kgf/cm²), Ductile Iron (24 kgf/cm²), Stainless Steel 304 & 316 (30 kgf/cm²).
  • Maximum applied pressures are lower: Cast Iron (12 kgf/cm²), Ductile Iron (16 kgf/cm²), Stainless Steel 304 & 316 (20 kgf/cm²).
Installation Conditions:
  • To prevent water hammer effects, install the arrester at the pipe corner above the pump.
  • For lifts over 50m and pressures above 5 kgf/cm², additional arresters are recommended at specific points.
  • Ensure a 10 cm gap between the valve and wall for maintenance.
  • Use cast iron or stainless steel for valves larger than 2" in high-pressure situations.
Operational Recommendations:
  • Maintain air chamber pressure at 30% to 50% of pipe pressure for optimal performance.
  • Adjust air pressure as needed using the air-pumping hole.
  • For outlets under open pressure, maintain input pressure between 1 to 1.3 kgf/cm².
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Catalog excerpts

L STYLE WATER HAMMER ARRESTER-1

L STYLE WATER HAMMER ARRESTER » The flow-directing mechanism in the valve can guide the flow and stabilize pressure. » In the corner of pipe, the water hammer is the most obvious. The design is for meeting the requirement and set the arrester at the corner directly. This design not only saves the space and is easy to set up, but also can replace the traditional crooked head to reduce the cost of setting up. » L style absorbs water hammer effect in two ways and brings excellent result. » Applied Conditions: Fluid » Applied Temperature: -15 ~ 80°C » Diaphragm Material: NBR & Viton Air-pumping hole » Normal air chamber pressure: 2.5 kgf/cm’ » The test pressure of valve body: Cast Iron : 21 kgf/cm’ Ductile Iron : 24 kgf/cm’ Stainless Steel 304 & 316 : 30 kgf/cm’ » Maximum Applied pressure: Cast Iron : 12 kgf/cm’ Ductile Iron : 16 kgf/cm’ Stainless Steel 304 & 316 : 20 kgf/cm’

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L STYLE WATER HAMMER ARRESTER-2

THE INSTALLATION CONDITIONS OF L STYLE WATER HAMMER ARRESTER When pump shuts off, pressure decreases instantly and forms unstable gap of positive and negative pressure that causes water hammer effect and creates noise and pipe vibration. To set up water hammer arrester at the pipe corner upside of the pump (shown as the figure) can prevent the water hammer effect and protect the machine. » Remark : When lift is longer than 50m and pressure is above 5 kgf/cm?, we suggest to set up arresters each at the downside of the long pipe and the upside corner of the check valve. It's easy to cause water...

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