Thermal Safety Valve

Thermal outflow protection is required in the case of variable flame boilers and heating installations using solid fuels. STS20S drain protection is a pressure-independent valve, activated by the temperature of the medium at the outlet from the heat source. At 97°C (+/-) 2°C, the DHW outflow from the heater opens. In this way, the valve prevents the temperature from rising above 110°C (the maximum opening).

Thermal drainage protection is manufactured in accordance with DIN 3440.

TECHNICAL DATA

Min. operating temperature: -10°C

Min. opening temperature: 97°C

Max. operating temperature: 110°C

Operating excess pressure: 10 bar

Maximum flow: 6.5 m³/h

Note! According to DIN 1988, thermal drain protection does not replace the required membrane safety valve.
By DIN 4751, the user of the device is required once a year to commission a specialist check of the drainage protection in terms of the correctness of operation.

TECHNICAL PROPERTIES

- body and cover made of brass [58% Cu, 3% PbJ CW617N according to PN-EN 12165: 2011 E]

- Viton seal

- spring made of stainless steel

- manual plastic drain button

• copper capillary tube, 1300 mm in the cover.

• Technical data

  Additional information

  EAN	8019001066405

  Physical parameters

  Width (cm)	5
  Height (cm)	32
  Depth (cm)	2
  Weight (kg)	0.6