Ward 14, Binh Thanh District
Ho Chi Minh City
Vietnam
Tel.: +84 (0)838 409 315
Fax: +84 (0)838 409 317 eMail: info@huynhbang.com
The GESTRA Steam Trap Range
What are steam traps?
To be able to operate a plant over a long period with an optimum efficiency the choice of the correct valves is of vital importance. Amongst these valves are steam traps which have an important role to play. Steam must be trapped within heating equipment until it has surrendered all heat energy, at which point the condensate thereby formed must be immediately discharged. The optimum efficiency of a steamheated plant is dependent upon the performance of steam traps.
One type of steam trap cannot be equally well suited for the various applications and requirements, therefore GESTRA offers a comprehensive steam trap range developed and refined on practical applications over the years. The choice of the steam trap type depends, of course, on the plant condition. We are willingly prepared to assist you in selecting the most economic solution for your particular application.
What are the advantages of GESTRA steam traps?
- Easy maintenance – GESTRA's traps can be checked, cleaned and repaired without being removed from the pipework.
- Interchangeable – GESTRA's various trap types have standardized face-to-face dimensions, sizes and end connections and are therefore interchangeable without any modification to the pipe layout.
- Tight shut-off, without loss of live steam.
- Automatic air-venting.
- Unaffected by dirt.
- Production tested – besides the legally required tests (e.g. hydraulic test) our trap regulators are tested under operating conditions (steam, condensate).
- Complies with recognized standards – our traps meet the relevant DIN standards and regulations and are in accordance with the AD bulletins (AD – Arbeitsgemeinschaft Druckbehälter = German pressure vessel regulations authority) with regard to choice of material, pressure and temperature ratings. On request test certificates to EN 10204.
- The BK is a thermostatic steam trap with Duo stainless (bimetallic) regulator. Advantage: particularly robust.
Thermostatic Steam Traps BK
with Duo Stainless Steel (Bimetallic) Regulator PN 40 - PN 630
Features of the BK series:
- Robust regulator
- unaffected by waterhammer and frost
- Suitable for superheated steam applications
- Stainless steel internals
- Installation in any position
- The MK is a thermostatic steam trap with membrane regulator. Advantage: very sensitive response characteristic.
Thermostatic Steam Traps MK
with Membrane Regulator PN 25 - PN 40
Features of the MK series:
- Very sensitive response characteristic
- Function is not impaired by high back pressure
- Built-in non-return valve
- Stainless steel internals
- Installation in any position
- High hot-water capacities
- even with low differential pressures
- The UNA is a float trap. Advantage: condensate discharge at extreme and sudden condensate flowrate and pressure fluctuations.
Ball-Float Traps - Type UNA
PN 16 - PN 160
Features of the UNA series:
- Unaffected by back pressure and condensate temperature
- No loss of live steam
- No banking-up of condensate even with extreme load and pressure fluctuations
- Particularly well suited for heat exchangers
- Unaffected by dirt
- Automatic thermostatic air-venting
- Repairable in-line
- Ideal for discharging cold condensates, distillates and condensates derived from chemical products
Pump Trap UNA 25-PK
The pump trap UNA 25-PK is a modern valve which combines the function of a float trap
with an additional pump mechanism.
With the UNA 25-PK, you have a product that always drains your plant reliably.
No matter whether a heat exchanger tends to bank up condensate in the partial or low-load range or whether an unfavourable pipe layout repeatedly leads to an accumulation of condensate in riser pipes, with the UNA 25-PK you can protect your installation and prevent thermal waterhammer.
How you benefit:
- Easy integration into all the usual horizontal pipe runs, thanks to the compact design and standard length for steam traps
- High capacity for boiling hot condensate, in both the trapping and pumping mode
- Rapid replacement of existing steam traps whenever modifications to the plant become necessary
- Simplified mounting, because non-return valves are already integrated into the unit and do not have to be considered additionally for installation
- Easy maintenance, because all functional elements are combined in one exchangeable control unit
Steam Traps for Special Applications
Application: | |
|---|---|
AK45 | For discharging condensate from steam |
UBK46 | Steam trap with adjustable condensate discharge temperature. |
SMK22 | Steam trap for SIP applications. |
MK20 | Steam trap for low-pressure steam-heating installations. |
TK23, TK24 | For the discharge of very large condensate flowrates with |
GK11 | For the discharge of very large condensate |
Steam Traps for Large-Scale Installations
The steam traps BK 35 and DK 47/57 are distinguished by their compact, light-weight design and suggest themselves as the ideal economical solution for medium and large-scale installations.
Specification: | |
|---|---|
ECONOline BK35 | For small condensate flowrates. |
DK47 L | For small condensate flowrates. |
DK47 H | For larger condensate flowrates. |
DK57 L | For small condensate flowrates. |
DK57 H | For larger condensate flowrates. |
Steam Trap Monitoring Equipment
Like any other industrial valve steam traps are subject to wear and their correct functioning can be impaired by precipitated solids and dirt deposits.
To assess the performance of a steam trap the following questions have to be answered:
- Does the steam trap work properly?
- If not,does the faulty trap cause a loss of steam(leakage) or banking-up of condensate (obstructed discharge passage)?
Faulty steam traps are a major source of waste in a steam distribution system. A trap that is blowing live steam is the worst offender, but traps that are plugged or stuck closed can also be costly. The decreased plant efficiency due to loss of energy and additional make-up water results in lost production. Furthermore, an increase of pressure is liable to arise in condensate systems which will lead to difficulties at all locations where condensate is discharged. The magnitude of such a steam loss depends on the cross-sectional area of the leak and, at the same time, the amount of discharged condensate. Locations where only small amounts of condensate are formed and discharged, e. g. drainage points in steam lines and tracing systems, are particularly problematical. On the other hand, locations where relatively large amounts of condensate are discharged will not give rise to considerable loss of live steam because of the presence of a large volume of liquid.
Steam traps which are obstructed or stuck closed do not cause loss of energy and/or water but reduce – to a greater or lesser extent – the efficiency of heat-transfer equipment and steam users. And waterhammer caused by condensate banking-up leads to considerable physical damage in steam and condensate systems.
Experience shows that installations where no regular trap testing and servicing takes place have a failure rate of defective steam traps in the order of 15 – 25 %. Regular maintenance and trap testing, which should be carried out at least once a year, can strongly reduce the failure rate to 5 %.
Test Systems:
- VK - Sightglass for checking heat exchangers and steam traps
- Test set with level electrode for monitoring steam traps VKE
- VKP-Ex - Ultasonic detector for detecting steam leakage in steam systems
- Computer-based monitoring, recording and evaluation system TRAPtest VKP