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Wednesday, 18 November 2015

Bladder or Fixed Diaphragm Pressure Tanks, how they work and how to install


The Shyms pressure tank is probably the key equipment of pressure pump that we sell at all over India. BDS Engineering a leading company offers variety of Pressure Tank, RO Tank, Pressurized expansion Tank.  There are many different ideas out there on what they do and how they work thus I would like to explain the basics of how a pressure tank operates and what its function is, I will also give you some basic tips for maintenance.

What Is A Pressure Tank?

A pressure tank or pressure vessel is a mild steel container that can vary in size from 3 liters up to 3000 Liter. Inside the tank there is a fixed diaphragm that divides the tank into 2 halves, the wet half and dry half. Another type of tank Bladder type, there is rubber bladder inside tank which is changeable.


Mild steel Pressure Tank

Pressure tanks are usually made out of steel or fiber glass. The modern mild steel models are cheap and best with low maintenance and fixed diaphragm is set into them. The quality brands that we offer is Shyms and Varem they can offer water with high pressure. A bladder is a balloon inside a tank that fills with water when there is pressure that is greater than that already in the bladder. The best part of these is that the bladder is generally replaceable if it bursts and the tank itself lasts for years as it can’t rust. Placing a bladder inside a pump can help diminish damage and can cure systems with frequent low pressure alarms due to changeable line pressure. Pressure tanks simply use air pressure acting on a rubber diaphragm to force the water out of the tank.

The half dry part of tank has a valve attached to it and compressed air is pumped into it until the pressure is at a certain level, which we will talk about later. The wet half has a metal threaded outlet attached to it and this is linked to the pipe work for a pressure pump. This procedure is controlled through the pressure switch and keeps your pump from turning on and off every time there is a demand for water.

Pressure Tank installation

You can install a pressure tank anywhere on the delivery otherwise pressurized side of a system. All pressure pump systems need a check valve installed in the pipe work. A pressure tank can be installed anywhere after this check valve.  These can be installed on the suction side otherwise just after the pump on the outlet. The check valve stops water flowing backwards and the pressure dropping when the pumps turn off. This allows a pressure pump to build up pressure and let the automatic switch turn it off.


Most pressure tanks come already pre set, when you have installed the tank, you can then adjust the air pressure using a gauge and a compressor. We offer an effective and good quality pressure tank that will help protect your pump and provide you with a good constant pressure and flow of water for whatever application you need.

For more info contact us www.bdsblairs.com or #9311162211

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