PRODUCTION • PROCESSING • HANDLING
systems being used have to operate without leaks to guarantee maximum safety in handling toxic mixtures. At the same time, a low net positive suction head required (NPSHR) is advantageous when using the unit, since this means the pump can be integrated into the facility without costly changes to the facility. T e process diaphragm pumps produced by Lewa are capable of providing this added value. T is also applies to the pulsation analyses developed in-house, which use numerous simulations to ensure optimal dimensioning and positioning of the components and thus help to improve the reliability and durability of the overall system.
Thomas Neumann is with Lewa.
www.lewa.com
Level Measurement
■ Meets the design standard of the oil & gas, petrochemical, hydrocarbon and LPG/LNG industries: – Fully ANSI/ASME design – Includes NACE requirements
Six LDH5 pumps have been delivered
PUMP TECHNOLOGY PREVENTS BOREHOLE ICING
I
n other Lewa developments, the fi rm has delivered six Ecofl ow type LDH5 process diaphragm pumps to the Arabian Gulf to expand the pumping capacity of two off shore gas fi elds. The pumps are used to inject mono ethylene glycol (MEG) to prevent borehole icing at critical points along the pipeline. This job follows two earlier major projects. As part of the largest job in Lewa’s history, a total of 40 process diaphragm pumps for MEG injection were built for the end customer, an international company, in 2013. A follow-up order in the summer of 2017 included the delivery of 12 Ecofl ow series type LDH5 pumps, among other products. The experience gained on the two previous projects has helped to handle the current, third project with even more speed and effi ciency. ●
■ Reliable level indication without external power with three functions in one device: – Liquid level indication – Liquid level switch – Liquid level transmitter
■ Equipment with optional bi-stable change over or on/off switches and linear or non linear transmitters (also as 2-wire systems
with 4…20 mA output, optional with HART ) ■ CE-conform and Ex-approval
®
■ For operating pressures from vacuum up to 400 bar and higher, operating temperature from –196 °C up to +400 °C
■ Densities > 0.3 g/cm3 ■ Closed floats for condensing liquids up to 350 bar operating pressure
■ Construction in stainless steel grade 316/316L as standard. Also possible in higher grades of stainless steel like 904L or Hastelloy® and Inconel®
/Incoloy® alloys ■ Casing of indication rail in stainless steel
WEKA AG · Switzerland · Schürlistrasse 8 · CH-8344 Bäretswil Phone +41 43 833 43 43 · Fax +41 43 833 43 49
info@weka-ag.ch ·
www.weka-ag.ch
ARCA Flow Group worldwide: Competence in valves, pumps & cryogenics
www.engineerlive.com 31
Please visit us at our new website:
www.weka-ag.ch
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