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DIMENSIONS AND WEIGHT (NOMINAL) Model no. Valve size L H mm mm mm (in) (in) (in) PIMDP.0.J 65 (2 1/2) 80 (3) 262 (10.3) 94.4 (3.72) H1 mm (in) 166 (6.54) PIMDP.0.K 100 (4) 395 (15.6) 114 (4.49) 225 (8.86) PIMDP.0.L 125 (5) 150 (6) 466 (18.3) 139 (5.47) 285 (11.2) Note 1: To determine flowrate at a specific kPaD the Kv calculation can be used. Q=Kv * √ΔP. D mm (in) 94.5 (3.72) 114 (4.49) 141 (5.55) Weight kg (lb) 13.6 (30.0) 34.5 (76.0) 49.0 (108) Kv/Cv 1 m 3 /hr (GPM) 69 (80) 120 (140) 258 (300) H1 H L D MODEL NUMBER SELECTION Valve size: J = 50/65/80 mm / 2”/3” K = 100 mm / 4” L = 125/150 mm / 5”/6” Connection: F = Double flange connection Tag: 0 = T = No tag (standard) Optional 3”x3” aluminium hanging ID tag PIMDP.0 . .F. Example: PIMDP.0.J.F.0 = FlowCon PIM ™ -DP 65/80 mm (2 1/2-3”) with double flange connection and no tag. FLANGE MATCH Model no. PIMDP.0.J PIMDP.0.K PIMDP.0.L Flange size (inch) 2 1/2 3 4 5 6 ASME B16.5 weld neck flanges CIass 150 CIass 300 ( ) Flange size (mm) 65 80 100 125 150 PN10 ( ) EN1092-1 weld neck flanges PN16 PN25 ( ) ( ) PN40 ( ) Tech note · FlowCon PIM™-DP · february 2024 · www.flowcon.com Page 2 of 4
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DESCRIPTION The FlowCon PIM™-DP series is a range of externally adjustable flanged differential pressure control valves. The purpose of the valve is to keep a constant differential pressure and thereby avoid noise from the sub-system, which the valve is controlling. Further, the FlowCon PIM™-DP can be used as shut off valve. Setting of the specific ΔP required over the controlled sub-system is externally operated and can easily be adjusted even when the valve is installed and in operation. Adjustment is done with a 13 mm (1/2”) Allen key turning the setting on the valve cap slowly (approximately one turn every 10 seconds). PIMDP.0.J PIMDP.0.K PIMDP.0.L Flow range, l/hr (GPM) Qmin Qmax Qmin Qmax Qmin Qmax 2270 (9.99) 32950 (145) 13600 (59.9) 82900 (365) 18200 (80.1) 119000 (524) HOW TO SELECT The FlowCon PIM™-DP valve is to be selected based on the calculated differential pressure across the controlled circuit (ΔpC) at design flow. The installed FlowCon PIM™-DP will hereafter ensure ΔpC never exceeds the valve set kPaD + tolerance even at partial load conditions down to the minimum flow values listed. Δ pBV Example; Design flow = 50000 l/hr = 50 m 3 /hr (220 GPM) Pipe size = DN100 (4”) ΔpC = 25 kPaD (3.63 psid) Δp H Δ pC Controlled Circuit Select valves (partner valve and DPCV) based on line size Δ pV and system requirements to eliminate pipe modifications. In this example it will be FlowCon Partner Globe and FlowCon PIM™-DP. With PIMDP.0.K’s maximum flow of 82.9 m 3 /hr, this valve size matches both size and flow requirements. ΔpC = Controlled Δ p Circuit ΔpV = Δ p across FlowCon PIM™-DP Set FlowCon PIM™-DP to required (calculated) ΔpC at design flow by slowly turning the setting (+ or -) while measuring ΔpC ΔpBV = Δ p across Partner Valve ΔpH = Δ p Pump Head over the p/t plugs - see instruction for more details. FlowCon PIM™-DP will hereafter ensure that ΔpC never exceeds the set 25 kPaD (3.63 psid) + tolerance in the specified flow range. Note that the maximum flow value is to be limited on the partner valve. Calculate ΔpV MIN using the standard formula ΔpV MIN = (Q design / Kvs) 2 * 100 In this case ΔpV MIN = (50 m 3 /hr / 120 m 3 /hr) 2 * 100 = 17.4 kPaD (2.52 psid). Select Partner Valve - preferably a balancing valve - and determine the ΔpBV. In this case a FlowCon Partner Globe is selected. From its specification, ΔpBV is at a flow rate of 50 m 3 /hr in setting 6 read to be 14 kPaD (2.03 psid). Determine minimum pump head: ΔpH = ΔpBV + ΔpC + ΔpV MIN = 14 + 25 + 17.4 = 56.4 kPaD (8.18 psid) The pump can now be selected considering a pressure drop of 60 kPaD (8.7 psid). Tech note · FlowCon PIM™-DP · february 2024 · www.flowcon.com Page 3 of 4
