Features

Glass-lined outlet valves with downward closing mushroom, used to connect the reactor or tank nozzle to the outlet pipes. The gauge and principal dimensions of the valve are in accordance with the standard DIN 28140 T1. The body is made of cast steel, which in lined internally with glass and always includes an additional nozzle with blind flange for internal cleaning and inspection. 

The mounting flanges on the equipment and drain are with nozzle and loose flange with dimensions in accordance with EN 1092-1 for the designation PN 10 / 16. Valves with nozzle and loose flange are also available with designation Class 150.

The valve body has been designed to avoid, as much as possible, dead zones and thus to avoid the possibility of contamination of the product. Where necessary, PTFE suitably shaped plugs have been inserted inside the body to ensure that the valve body is perfectly self-draining. 

The mushroom closing organ acts on a glass-filled PTFE seat. Sealing between the closing organ  and the body is achieved with a PTFE bellow and an additional packing seal.

The closing organ can be actuated manually by an operating screw and a handwheel and pneumatically by a pneumatic actuator mounted laterally and connected to the closing mushroom by levers.

Dimensions & Design Data

Dimensions: 

• DN 50/32, DN80/50, DN100/80, DN150/100

• Internal pressure min / max    : -1 / + 6 bar

• Internal Temperature min / max    : -60 / 200

• Max pressure, drain side: 2 bar

• Max pressure of supply air: 3,5 bar

• Min / Max ambient temperature    : -25 / + 80°C per (pneumatics and instruments)

Options

A resistance thermometer sensor for measuring the temperature can be inserted in the upper end of the mushroom valve head; these sensors are available in these three following standard types: 

The TR1 sensor consists of a sensitive resistance thermometer encapsulated in a stainless steel probe. It is all inserted in a metallic, stainless steel tube, equipped with threaded connection fitting and spring to ensure the probe is in contact with the internal wall of the mushroom. 

The TR2 sensor consists of a sensitive resistance thermometer cemented in a tantalum tip, which with a threaded connection fitting and Gylon gasket, is applied directly on the mushroom head. The measurement circuit wires are inserted in a robust tube in PTFE which, through the internal cavity of the mushroom, arrive at the terminal head. These sensors feature reduced response times compared to the TR1 sensors.  

The TR3 sensor consists of a sensitive resistance thermometer element encapsulated in a stainless steel probe. It is all inserted in a metallic, stainless steel tube, equipped with threaded connection fitting and spring to ensure the probe is in contact with the wall. The concept is the same as the TR1 sensor but it is assembled inside a tantalum casing to ensure lower response times than the TR1 sensor. 

The terminal head is made of cast aluminum, complete with terminals and suitable cable glands. The sensitive element is a PT100 resistance thermometer (single, double, or triple) in Class A or B in accordance with EN 60751 and the measurement circuit may have 2, 3 or 4 wires. 
The TR1, TR2 and TR3 sensors are passive components, with negligible capacities and inductance.
The TR1, TR2 and TR3 thermometric sensors are SIMPLE APPARATUS, in accordance with standard EN 50020 - 2003 (Electric apparatus for potentially explosive atmospheres - intrinsic safety protection "i"), paragraph 5.4.a. The TR1, TR2 and TR3 thermometric sensors are devices that do not contain own effective ignition sources; they can therefore be used in environments with a danger of explosion and the presence of gas (Groups IIA, IIB and IIC).