Important Items in Steam Network

To maintain Steam quality in Steam Network it is important to ensure that the steam leaving the boiler is delivered to the process (point of usages) in the appropriate condition (Clean, Dry and Saturated Condition).

To achieve this, steam networks normally make use of Strainers, Moisture Separators, Steam Traps and Pressure Reducing Station (PRS).


A strainer is a form of sieve in the pipeline. It contains a screen through which the steam must pass. Any passing debris will be retained by the mesh. A strainer should regularly be cleaned to avoid blockage. Debris should be removed from the steam flow because it can be restriction to the steam flow, very damaging to downstream accessories, and may also contaminate the final product.

Moisture Separator:

A Moisture Separator is a body in the pipeline which contains a series of plates or baffles which interrupt the path of the steam. The steam should be as dry as possible to ensure it is carrying heat effectively. The steam hits the plates, and makes it route change and any drops of moisture in the steam collect at the bottom of the moisture separator, then draining from the bottom of the separator.

One drain steam trap (Thermodynamic / Ball Float Trap) module to be installed at the drain of Moisture Separator.

Steam Trap:

A Steam Trap is a device used to release condensate from the steam network, preventing escape of the live steam from the system. Steam Trap allows condensate to pass through it and traps live steam from being released to the atmosphere.

There are different types of steam traps available now days. Classification of steam traps is done based on their application and working principals. See in detailed in Trap section.

Pressure Reducing Station (PRS):

A PRS is assembly of components along with Pressure Reducing Valve (PRV). Steam having ‘more Total Enthalpy’ but ‘less Enthalpy of evaporation’ & and ‘less Specific Volume’ at High Pressure Saturation condition, compared to that at low Pressure. ‘Enthalpy of evaporation’ is only used during indirect heating in equipments. Steam instantly releases ‘Enthalpy of evaporation/latent heat’ during condensate in indirect heat transfer process. Uses of indirect heating processes are much more in industries.

Therefore Steam has to be generated in Boiler and transferred up to user / equipment through pipes at Higher Pressure, but, steam has to be use at Lowest Practical Possible Pressure in the equipments. So that, Capacity and size of boiler & steam pipe sizes will lower and the process gets more Energy in the form of latent Heat and reduces the steam consumption.

PRS comprises of a Moisture Separator, Inlet Pressure Gauge, Inlet Isolation Valve, Strainer, PRV (may be Self Actuated type or Pneumatic Actuated type), Outlet Isolation Valve, PRV bypass Valve, Pressure Safety Valve, Outlet Pressure Gauge, and associated piping and components. See in detailed in Steam Application section.

Condensate Recovery:

The condensate which forms, as a result of heat transfer or losses due to radiation, convection etc., will easily drain out of the steam network through steam traps.

If it is contaminated, it will probably be sent to drain. If not, the valuable heat energy (Sensible heat) it contains can be recovered by returning it to the boiler feed tank. This also saves on water and water treatment costs. Heat energy of some specific contaminated condensate can also be recovered through other process without mixing with boiler feed water drum.

Mechanical (steam motivated) pumps are used for transferring of condensate (free from flash steam) purpose. Flash steam can be separated from condensate in Flash Separator or in Flash Vessel. See in detailed in Condensate recovery section.

About Us
About Uni Klinger
Vision & Mission
Manufacturing Resources
Fluid Control Division
Fluid Sealing Division
Safety Valve and Control Valve Division
UKL Global Footprints
Fluid Control Division
Piston Valves
Bellow Seal Valves
Disc Check Valve
High Pressure Valve
Steam Traps
Thermodynamic Steam Traps
Thermostatic Steam Traps
Ball Float Traps
Clean Steam Trap
Inverted Bucket Traps
Bi Metallic Bi Thermostatic Trap
Automatic Pumping Trap
Trap Modules
Intelligent Trap Valve Station
High Pressure Thermodynamic Steam Trap Compact Module
Steam supply and Condensate return Manifolds
Pipeline Accessories
Air Vent & Air Vent Assembly
T & Y Type Strainers
Air Eliminators
Moisture Separators
Sight Glass
Pressure Reducing Station
Heat Recovery Products
Flash Vessels
Pressured Power Pump Unit
Steam Injectors
Deaerator Head
Liquid Level Gauges
Leak Tector
Hot Water Generation System
Fluid Sealing Division
Jointing Sheets
Compressed Asbestos Fiber (CAF)
Compressed Non-Asbestos Fiber (NCAF)
Expanded PTFE Sheets
Graphite sheet
Metallic/ Semi-Metallic Gaskets
Spiral Wound Gasket
Metal Jacketed Gasket
Kammprofile Gasket
Ring Joints
Gland Packing
Non-Asbestos Gland Packing
Industrial Gasket Division
Safety Valve and Control Valve Division
UKL-AST Safety Relief Valve
SMU-7000 Safety Relief Valve
SMFN -7000 & SU-7000 Safety Relief Valve
AST Spa Products
AST CV-8000 Control Valve
AST SMS-7100 Safety Valve for Steam Boiler
AST SVP-7200 Pilot Operated Safety Valve
Steam Engineering Services
More Industries
Fertilizer Industry
Aerated Concrete Block Industry
Tyre Industry
Rice Industry
Sugar Industry
Edible Oil Industry
Captive Cogen Industry
Soap Industry
Textile Industry
Chemical Industry
Hotel Industry
Pharma Industry
Brewery Industry
Dairy Industry
Rubber Industry
Case Study
Case Study-Textile Industries
Case Study-Chemical Industry
Case Study-Tyre Industry
Ask the Expert
Return On Invesment
ROI by Flash Vessel
ROI by Pressure Powered Pump
ROI by Pressure Reducing Station
Steam Engineering Guideline
Advantages of Steam
The Boiler
Contact Us
Enquiry Form
Sales and Factory Offices
Whats New