How do we calculate?
Valve lengths (face-to-face L) are taken from the product catalogue of Duyar Vana, of which we are an authorized dealer; the valves are manufactured to the relevant EN 558 series (e.g. resilient-seated gate valve Series 14, swing check valve Series 48, spring check valve Series 1). Installation gap between flange faces = L + 2 × gasket thickness.
Let us turn your calculation into a bill of materials
Send us the list from the calculator; we will quote flanges, elbows, tees, reducers, pipes and valves in a single offer, with EN 10204 3.1 material certificates.
This calculator is used in these sectors: Building services (HVAC & plumbing). All calculators →
Results are for preliminary selection and do not replace engineering design. Ask our technical team for the final selection.
