There are settings for both gas pressure and flow rate. These can vary depending upon the welding position, metal type/thickness, type of gas used, and conditions (wind, drafts etc.) My welding instructor told us that 20-20 is a good place to start (20 psi, 20cfm flow).
It is the one lettuce that doesn't have a lot of Vitamin K. One cup of iceberg lettuce contains only about 13 micrograms (mcg) of Vitamin K. This is a low amount and should be safe for you to use as part of your diet while on CoumadinÂ® (warfarin). Thanks for writing, Timothy S. Harlan, MD, FACP. Dr. Gourmet.
Iceberg lettuce Sodium Content. Welcome to the nutritional sodium content in 1 different types of iceberg lettuce, ranging from 10 mg to 10 mg per 100g. The basic type of iceberg lettuce is Lettuce, iceberg (includes crisphead types), raw which in 100g contains 10 mg of sodium. The total recommended daily allowance or RDA for sodium is 1600 mg.