Direct acting pressure reducing valve TLV DR20 DN25

Pressure reducing valve (direct acting) TLV DR20 DN25

Application area:

Pressure reducing valves are designed for use in steam systems, regulation according to the principle "after itself". It is used at low steam flow rates and not high requirements for pressure accuracy.
Setting the secondary steam pressure is done by changing the spring force. Compressing the spring opens the valve, thereby increasing the steam flow. The secondary steam pressure (pressure after the valve) that increases in this case acts on the bellows and creates a back force that closes the valve. Being in constant equilibrium, the force of the spring and the force of the secondary pressure of the steam on the bellows maintain the set steam pressure.
Among the disadvantages, it is necessary to note the less accurate maintenance of the secondary steam pressure, in contrast to pilot-operated pressure reducing valves - the COSR model.

Pressure setting range (must be specified when ordering):

• 0.14 - 2.0 bar
• 1.8 - 6.0 bar
• 5.4 - 10.0 bar

Options:

• Connection: threaded or flanged (optional)
• Diameter: 15 - 25 mm
• Working media: steam, air
• Maximum medium temperature: +220 ºC
• Nominal pressure: 20 bar
• Maximum pressure in front of the valve: 16 bar
• Maximum pressure after the valve: 10 bar
• Minimum pressure after valve: 0.14 bar
• Mounting position: horizontal

Execution material:

• Body: cast stainless steel 1.4312
• Bellows: stainless steel 1.4541
• Main valve, seat: stainless steel 1.4028
• Valve stem: stainless steel 1.4305
• Filter: stainless steel 1.4016