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Difference between revisions of "Flap Diverting Valves"
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[[File:Flap Diverting Valves.jpg|thumb|right|Flap Diverting Valves]] | |||
[[File:Flap Diverting Valves1.jpg|thumb|right|Flap Diverting Valves]] | |||
'''Flap Diverting Valves''' have one inlet and two outlet ports. Conveyed material is diverted with the help of gravity and flap. | |||
==Applications== | |||
Flap diverting valves are designed to route powders and granular materials within lean phase pneumatic conveying systems where the product being handled does not exhibit abrasive characteristics or have sharp irregular edges. | |||
==Design== | |||
The design embodies a self adjusting parabolic flap seal. This bears on a fully machined surface to give excellent sealing characteristics. Care has been taken to ensure a minimal change in cross sectional area through the valve, thus reducing any contraction or expansion which can cause conveying efficiency losses. | |||
==Construction== | |||
The valve housing is cast and may be of aluminium, iron or stainless steel. Two types of pipe connection are available: flanged or plain pipe. In the latter case, pipe spigots of a complementary material are cast into the housing. The flap comprises a stainless steel fabrication with a polyurethane or silicone seal. Shaft seals prevent product escape to atmosphere. | |||