SHT21 Thermostatic (Bimetallic) Steam Trap

Description

Working Principle

The working principle of the bimetallic trap is to rely on the different temperature between saturated steam and condense water.
When the set temperature is reached, the condensed water is continuously removed.

Features

The body and bonnet are all made of forged steel A105.
The disc and seat are made of special stainless steel with heat treatment.The disc hardness is as high as HRC55, which improves the service life of the steam trap.
Imported bimetallic ensure precise temperature control.
The closing system adopts high-precision wire sealing structure.
Built-in filter makes the trap work in a clean environment.
The back pressure rate is as high as 50% or more.

Technical StandardGB/T12250-2005 Steam Traps Terminology Marking Structure Length

GB/T22654-2008 Technical Conditions for Steam Traps
GB/T12251-2005 Test Method for Steam Traps
ISO 6948 Automatic steam traps
Production and performance characteristic tests

Technical Parameters

Nominal pressure PN25
Max. allowable pressure(Shell) 2.45MPa/200C
Max. allowable temperature(Shell) 450°C/1.03MPa
Factory steam action test >3 times/1.6MPa
Max. working pressure 2.1MPa
Max. operating temperature 350C
Factory cold test pressure 3.8MPa
Air test 2.0MPa

 

Bonnet: A105/F304/F316
Disc: 440C+304
Body:A105/F304/F316
Other internal parts: 304
Seat:420

SHT21 Capacity Curve

sht21

SHT21 stucture diagram

Model Nominal size L H H1 W Weight
SHT21T DN15-25 90 168 100 55 1.8 Kg
SHT21W DN15-25 90 168 100 55 1.8Kg
SHT21F DN15-25 150 168 100 115 4Kg

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