Mechanical Supplies
Combined DRV & 2-Way Control Valves
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- Oventrop "Series 810" dynamic balancing valves, which hold a set flow across a differential pressure band rather than at one design point, 2-32 PSID on threaded and solder sizes DN 15-50, and 2-32 or 5-60 PSID on flanged DN 65-150. Flow cartridges run from 0.5 GPM on a ½" body up to 680 GPM on a 6" flanged body.
Application
Used on terminal branches in fit-outs where ceiling void depth and access panel size decide what fits, and on riser branches where the differential swings with load. Because the cartridge fixes the flow across its whole pressure band, the proportional balancing pass is removed from the commissioning programme, which is where the saving shows on repetitive floors.
Standards & Reference 5 cited
EN 12266-1
Pressure testing of metallic valves: the shell and seat tests a valve passes before it leaves the factory.
EN 60534-2-3
Test procedures for control valve flow capacity: how the Kv figure a designer sizes on is actually measured.
VDI 2073
German guidance on hydraulic circuits in heating and cooling systems: the basis for how a hydronic network is balanced.
NSF/ANSI 61 Annex G
The lead-content limit within the drinking water standard: the basis of the 'lead-free' designation for potable water components.
PN 16
A nominal pressure rating of 16 bar. The PN figure sets the flange drilling and the pressure the body is rated for.
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