Main Types of Steam Safety Boiler Valves

Boiler Valves are integral parts of any steam or heated water applications.
Boiler valves are used as safety equipment in steam boilers to control pressure and temperatures.  
There are different types of steam boiler valves available in the market as per the requirement.
A boiler valve is a sliding type of Boiler valve. In the gate valve, the closure membrane is a metal valve.
These gates slide down to close the valve. The flow area is equal to the area of the pipe in the fully open condition which results in negligible pressure drop across the valve.

These valves are usually used in on/off conditions. In tendentiously open conditions due to vibrations the valve is exposed to quick wear and tear.
These boiler valves find their use in the petrochemical industry due to the fact that can work with metal sealing.

A boiler valve is a linear motion type of valve and is typically used in both on/off conditions’ boiler valves, the flow of the fluid through the valve follows an S-path.
Because of this, the flow direction changes twice which results in higher pressure drops. Due to other advantages offered, they are widely used in applications in which pressure drop through the valve is not a controlling factor.

These boiler valves can be used in three configurations: 

• Tee pattern
• Angle Pattern
• Wye Pattern

An important boiler fitting is the safety valve. Its function is to protect the boiler shell from overpressure and subsequent explosion. 
The maximum set pressure of the boiler valve must be the design (permissible working pressure) of the boiler.
There must be an adequate margin between the normal operating pressure of the boiler and the set pressure of the boiler valve.
The preservation of water quality is essential for the safe and efficient operation of a steam boiler. 
 The purpose of the next few Sections is simply to identify the fittings to be seen on a boiler.
A boiler valve is a mechanism in a combi boiler that opens or closes to direct hot water either to radiators or taps and showers.

How boiler valves work

Boiler valves give priority to the hot water for your taps over the heating.

How to spot a valve fault

As a moving part, the boiler valve can get stuck. This is a problem that is suffered by older boilers valves.

Common boiler valve problems

Boiler valves are an important part of combi boilers. So, an issue could affect the heating and hot water all around your system.
As a moving section, the most common faults are caused by boiler valves getting stuck.

No hot water

If you find that the water starts turning hot then it's highly likely that there's a fault with the boiler valve.

Hot water but no heating

A likely cause is that the boiler valve has stuck. This means that hot water will be sent to the taps but the heating won't warm up.

Lukewarm water

A stuck boiler valve can also mean that you end up with lukewarm water from your taps. This happens when the boiler valve is slightly stuck open on the heating side. Some of the heat that must be the hot water for the taps will be lost.
related product: SDNR Globe Valve