Pulse Dampers for System Efficiency and Stability

Product Overview

Pulse damper, also known as pulsation damper and pulsation buffer, is a common component to eliminate pipeline pulsation and an accessory that must be equipped with metering pumps. The pulsation damper can smooth the pulsation of the pipeline and the water hammer of the system caused by the metering pump, diaphragm pump and other positive displacement pumps. It is separated from the gas and the liquid in the pipeline by a corrosion-resistant diaphragm, and the pipeline pulsation is smoothed by the change of the volume of the gas chamber.

• Body material: PVC, PP, PVDF, SUS304, SUS316L, etc.
• Diaphragm material: PTFE , FPM, EPDM, NBR.

Features

• Reduce the harm of water hammer to the system.
• Reduce the peak value of flow rate fluctuations.
• Protect pipelines, valves and joints from the impact of pressure fluctuations.
• Create a good working environment for metering pumps and improve pump performance.
• Allow the system to use a smaller pipe diameter and reduce costs.
• Used in conjunction with a back pressure valve, etc., the pressure fluctuation of the pipeline can be close to zero.
• Reduce the energy consumption of the system.

Volume Selection of Diaphragm Damper

The hourly flow rate of the pump ÷ 60 ÷ the number of strokes per minute of the pump x 15 = the minimum volume actually required by the damper, that is, the metering capacity (in ml) for each stroke of the metering pump (or diaphragm pump) multiplied by 15 can be obtained The minimum volume of the damper required to reduce the pulse by 90%.

Note: (This calculation method is suitable for single-head pulse pumps, and multi-head pumps are discussed separately.)

Working Principle

According to Boyle's law P₁V₁=P₂V₂, the volume of the gas is inversely proportional to the pressure of the gas, and the pulsation of the pipeline is smoothed by changing the volume of the gas. For the system that has a sinusoidal flow velocity, At the peak: the volume of the air chamber reduces, and the pulse damper absorbs the excess liquid flow; At the trough: the volume of the air chamber increases, releasing the stored liquid, thereby achieving a smooth pulsation effect.

Table 1: Size Table of SWMZ Type Diaphragm Pulse Damper

Model	Volume (L)	H (mm)	D (mm)	Caliber	Rated Pressure (MPa)	Connection Method
SWMZ-0.35	0.35	215	φ140	DN15	1.6	Female 1/2"
SWMZ-0.6	0.6	235	φ171	DN20	1.6	Female 3/4"
SWMZ-1.0	1.0	260	φ205	DN25	1.6	Female 1"
SWMZ-1.5	1.5	308	φ230	DN25	1.6	Female 1"
SWMZ-2.0	2.0	313	φ255	DN32	1.6	Female 1-1/4"
SWMZ-4.0	4.0	354	φ301	DN40/50	1.6	Female 1-1/2", 2"