11/2/2023 0 Comments Ford 4 viscosity cupEach type and brand of paint responds differently to thinning. The Ford viscosity cup is a simple gravity device that permits the timed flow of a known volume of liquid passing through an orifice located at the bottom. Ford Flow Cup No 4 - ASTM D1200 Ford Flow Cup No 5 - ASTM D1200 The orifices are manufactured from stainless steel. The orifices are manufactured from stainless steel. A Ford 4 viscosity cup pn L034-191 is shown in this how to video. Viscosity range Flow times BS FLOW CUP BS 3900 (1971) Old Specification (B2) BS 3900 (1971) Old Specification (B3). įlow cups are manufactured using high grade aluminium alloy with stainless steel orifices (where indicated), flow cups are available with a range of UKAS / ISO 17025 certified standard oils to confirm the flow cup is measuring within specification. This measured kinematic viscosity is generally expressed in seconds of flow time which can be converted into centistokes (cSt) using a viscosity calculator. Viscosity Conversion Chart Centistokes Poise SSU Zahn 1 Zahn 2 Zahn 3 Zahn 4 Zahn 5 Ford 3 Ford 4 Krebs Units SAE Liquid Example 1 10 20 40 60. The process of flow through an orifice can often be used as a relative measurement and classification of viscosity. Generally painting contractors will use Ford 4 viscosity cups for checking the viscosity of paint after it has been thinned. Flow cups are designed to accurately measure the viscosity of paints, inks, varnishes and similar products. Ford 4 viscosity cups are the most common cup used for testing paint viscosity and are commonly referenced by coating manufacturers with regards to testing coatings before being applied.
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