Cost Savings Archives

DBB system in instrument piping – a cost effective safety solution

I remember very well when we started the development of our Double Block & Bleed Valve Series. We called it “VariAS-Blocks”. Production started 20 years ago, and we have made many improvements since there.

We based the design on the standard SHELL MESC SPE 77/165 (which the MESC SPE 77/170 superseded) and EEMUA 182.

Cryogenic valves for LNG application – Part 2

In our second part of the cryogenic valve series I would like to responsive on questions like “What are the challenges of using cryogenic?”, “Selecting a valve for cryogenic service.”, “How can engineers ensure tightness of cryogenic valves?” and “What should engineers pay attention to during assembly of cryogenic valves?”.

Assembly clean cryogenic Cryogenic valves LNG LNG application lubricate manifolds Pressure primary isolation valve sealing ship Single and dual flapper check valves stem temperature Tightness Triple offset rotary tight isolation valves valves

Cryogenic valves for LNG application – Part 1

One of our customers needed a primary isolation valve for a pressure measurement on a container ship. The ship uses natural gas power. The valve had to meet the Fire Safe API requirements. It also had to pass a cryogenic test with liquid nitrogen (-196 ° C). The container ship rides under the American flag. Thus, an independent examiner had to administer the test. This examiner came from the American Bureau of Shipping (ABS) and the US Coast Guard.

Assembly clean cryogenic Cryogenic valves LNG LNG application lubricate Pressure primary isolation valve sealing ship Single and dual flapper check valves stem temperature Tightness Triple offset rotary tight isolation valves

All about Close Coupled Flush Ring

The chemical industry uses flush rings for diaphragm seals. These rings prevent clogging of the instrument connection. The technician mounts the ring between the process flange and the diaphragm seal. It has flushing ports and membranes. The flushing ports allow users to wash out particles from in front of the membrane. It also has a pressure chamber, which users can vent, drain, or fill with cleaning liquid. The user can then flush the chamber.

“Traditional” Assembly Close Coupled Close Coupled Flush Ring Close Coupled Hook-up Close Coupled Installation Close Coupled Manifold diaphragm seals flush ring instrument connection measurement