DOWNSTREAM HYDROSTAB PREMIUM SERIES K1 11

Based on the latest developments of the Hydrobloc system, the Downstream Hydrostab Premium K1 11 uses high quality materials and a proven design to guarantee our customers exceptional service life, accuracy and functionality. - Installed both in new works or existing installations. - Installed in valve chambers or buildings, in all cases with frost protection. T he use of Downstream Hydrostab Premium regulation valves makes it possible to reduce and stabilise the pressure of a downstream network supplied by a higher pressure upstream network, irrespective of variations in the upstream pressure...

MAIN VALVE OPTIMISED FOR LONG-LASTING INVESTMENT: THE TECHNICAL ADVANTAGES OF THE DOWNSTREAM HYDROSTAB PREMIUM PILOT CIRCUIT OPTIMISED FOR DURABILITY, ACCURACY AND EASIER MAINTENANCE: EASY COMMISSIONING NO RISK OF CORROSION: Full hot epoxy coating with AND CONTROL: Position indicator made from stainless steel 316 with high resistance glass. Integrated manual air release valve. Specific boss profile (pilot Upstream/downstream pressure gauges supplied circuit connection areas): Active diaphragm surface entirely made from area increased for enhanced stainless steel 316* for high pressure related...

PILOT CIRCUIT OPERATING PRINCIPLE OPERATION OF THE DOWNSTREAM PILOT CIRCUIT (FIG. I): The Downstream Hydrostab Premium comprises: • The action of the pilot spring (51P) determines the downstream pressure setpoint and tends to open the water throughway in the pilot. • A MAIN VALVE comprising an upstream zone (dark blue), a • The downstream pressure (green areas) is applied under the pilot membrane downstream zone (green) and a control chamber (light blue), and the action of the spring. The increase in downstream pressure tends to isolated from the latter by a diaphragm. reduce the flow of the...

2- MAIN OPTIONS Anti-calcification stem: upper and lower guide The parts are covered with Teflon. The lime-scale settles but does not adhere, the guides self-clean with the displacement of the mobile ensemble during operation. 1- ANTI-CAVITATION DEVICE ACD 040 When the pressure differential generated by the reduction of the desired pressure entails a risk of cavitation (see table on page 12), the solution is anticavitation device ACD 040 (Anti Cavitation Device 0-40 bar). PPLICATIONS A • eduction of pressure. R • eduction of noise. R • eservoir filling. R • y-pass of an overpressure pump. B •...

Each network is unique. In order for a regulation valve to be entirely satisfactory and for its • A better range of operation: reduced throughway automatically generates a greater degree of opening of the downstream Hydrostab Premium at low flow-rates. Thus, the stability of the device is optimised and the risk of service life to be as long as possible, a number of criteria must be determined: cavitation reduced. T he network life scenario, which will determine the operation of the device. T he network’s operating conditions (flow rate, pressure, etc.). • Greater precision attributable to the...

3– 3– FLOW SPEEDS: VITESSES D’ECOULEMENT: Choice of model and DN with the BAYARD calculation rule: The mode of use together with the BAYARD calculation rule enables you to Le tableau ci-dessous synthétise les coefficients d’écoulement ainsi que les débits sous certaines vitesses. La série Hydrobloc Premium autorise une an The table below summarises the flow coefficients as well as the flow rates under certain speeds. The Hydrobloc Premium series allows pouvant flows related pour les débits (red la défense incendie (zone rouge). vitesse maxi exceptionnelle importante used forêtre considéréeto...

NOMENCLATURE - HYDROBLOC PREMIUM: XGS [DN50-200MM] ET XG [DN50-150MM] Pressure reduction pilot 51P offers several adjustment ranges: • Standard: 1 to 16 bar • Option 1: 0.3 to 2 bar (for a reservoir by-pass, for example) • Option 2: 15 to 25 bar (other ranges: please consult us) NB: it is possible to modify the range in-situ without changing the regulation valve or the pilot. Only the pilot spring is replaced by simply removing the pilot bonnet! REDUCED THROUGHWAY MAIN VALVE TYPE XGS DUCTILE IRON X SURFACE SPECIFICATION X (Gl. Spec.) X ETAT DE SURFACE (Spec. gle) USINAGE: MACHINING: MOULAGE SABLE:...

T18005B DOWNSTREAM HYDROSTAB PREMIUM REGULATION VALVE T18005B DOWNSTREAM HYDROSTAB PREMIUM REGULATION VALVE NOMENCLATURE - HYDROBLOC PREMIUM: XGS[DN250-300MM] AND XG [DN200-300MM] NOMENCLATURE OF THE DOWNSTREAM PILOT CIRCUIT DUCTILE IRON STAINLESS STEEL STAINLESS STEEL STAINLESS STEEL DUCTILE IRON BRASS STAINLESS STEEL STAINLESS STEEL STAINLESS STEEL STAINLESS STEEL DISK RETAINER STAINLESS STEEL DISK HOLDER DUCTILE IRON DIAPHRAGM RETAINER DUCTILE IRON Filter with G 3/8 screen STAINLESS STEEL STAINLESS STEEL CUPRO / STAINLESS STEEL Pipe connection piece kit STAINLESS STEEL Position indicator STAINLESS...

INSTALLATION RECOMMENDATIONS: Safety valve: this will protect the downstream network in the event the stabiliser fails due to lack of monitoring and maintenance. Its gradual leakage will alert the network manager to an anomaly before there are financial consequences due to damage caused by excessive pressure. T18005B DOWNSTREAM HYDROSTAB PREMIUM REGULATION VALVE T18005B DOWNSTREAM HYDROSTAB PREMIUM REGULATION VALVE NOMENCLATURE OF THE DOWNSTREAM PILOT TYPE 51P 10 The overall dimensions of the pilot circuit, depending on the DN, may be greater than those of the valve. Pilot calibrating screw +...

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