Compressed gases - Import export

What you can expect from an APROVIS process gas heat exchanger: - Suitable for low and high temperature ranges - Operating pressures up to 160 bar - Compact design for use in confined spaces - Suitable for a wide range of gases - Implementation of customised solutions

Explosionproof/flameproof gas preheater EEx d -ATEX und IECEx zertifiziert In general a cooling down takes place at expansion of gases whilst a heating takes place at compression. Typical gases are carbon monoxide, natural gas and air. The temperature change, which occurs at expansion of gas or gas mixture from a high to low pressure i.e. after a gas pressure control is called Joule-Thomson effect. In order to prevent the effects of Joule-Thomson as icing or condensate separation, the gas will be heated up before expansion. The gas pre heaters are suitable for all kind of gaseous media (i.e. air, natural gas, technical gases, fuel gas) and low flow process applications, suitable for pressures up to 300 bar. The “Cast electric heaters” type flameproof electrical gas pre heaters are certified for use in zone 1 or 2 hazardous area, custom built to meet client specification. The gas pre heater consists of a process tube coil and an electrical heating bundle, casted in aluminium. The process gas flows through the tube coil and is heated by the aluminium block that provides the heat transfer. This indirect electric heating gives an accurate control of the process and eliminates pressure vessel design and associated costs.

The DS 233 is a differential pressure switch with digital display for non-aggressive gases and compressed air. Because of its compact and robust aluminium housing it is particularly suited for machine and plant engineering. Basic element of the DS 233 is a piezoresistive silicon pressure sensor, which features high accuracy and excellent long term stability. As standard the DS 233 offers a PNP contact and a rotatable display module with 4-digit LED display for representing the differential pressure. Optional up to 2 freely configurable contacts are available. Features: — nominal pressure: 0 ... 6 mbar up to 0 ... 1000 mbar — accuracy: 0.35 % FSO — aluminium housing — rotatable and configurable display module — 4-digit LED display — suited for non-aggressive gases and compressed air Optional Features: — 1 / 2 PNP contacts — customer specific versions

The DMD 341 is a differential pressure transmitter for non-aggressive gases and compressed air. Because of its compact and robust aluminium housing it is suited for machine and plant engineering. Basic element is a piezoresistive stainless steel silicon sensor, which features high accuracy and excellent long term stability. In combination with our display and switching unit ASM 430 the user has a 4-digit LED-display for representing the differential pressure as well as up to 2 freely configurable contacts. Features: — differential pressure 0 ... 6 mbar up to 0 ... 1000 mbar — accuracy: 0.35% / 1% / 2% FSO — piezoresistive silicon sensor — compact and robust aluminium housing — suited for non-aggressive gases and compressed air — current and voltage output signals in 2- and 3-wire systems Optional Features: — display and switching module with up to 2 contacts — customer specific versions

The pressure transmitter DPS 300 was developed for the differential pressure measuring for dry, non aggressive gases and compressed air and can be used for several HVAC applications. The DPS 300 is a multi range transmitter with up to three adjustable ranges. The device is equipped with a two-line LC display optionally and can simply parameterised. Values, status of the contact and the unit are shown on the display. Features: — differential pressure 0 ... 1.6 mbar up to 0 ... 1.000 mbar — accuracy: 0.5 % FSO BFSL — current and voltage output signals in 2- and 3-wire systems — adjustable ranges — adjustable damping Optional Features: — LC-display, two-line — automatic zero adjustment — contacts (only in combination with display) — square root extraction (only in combination with display)

Application specific ring sets Improved properties are: Extrusion resistance, if high pressures have to be sealed and/or bigger gaps than the normally recommended max of 25 of the packing size are found. Wiper function, if any micro scaling is found on the stem and at reciprocating movement with control valves Blow out safety, when sealing high compressed gases and fumes Pliability, with low gland forces as well good reset and adaptability for example in applications with temperature cycles. Ring Set 3335 For Control Valves up to 400 °C. Ring Set 6655 For Control Valves and staem applications up to 600 °C steam. All rings are delivered as standard in skive cut. Ring Set 6660 For Valves up to 650 °C steam. This ringset offers minimal volumeloss. The rings in the sealing zone are split as standard in 2 halves or as option delivered with a skive cut. Top and bottom ring are delivered with skive cut. Soot Blower Ring Set For soot blower applications with steam temperature up to...