TPI September 2020

Products & developments

New Schroeder Valves solution available on the market

A new type of valve for pressures from 140 to 250 bar

varying load conditions – down to the single-digit percentage range of the nominal load – which then have to be compensated. This applies particularly to combined cycle power plants and is also due to the increasing use of renewable energies. Previously, it was difficult to prevent cavitation during regular operation and increasingly difficult when operating just below the minimum flow rate in the critical range. Now, the SIP will be able to operate in this range, even in the area of the switch point hysteresis. The SIP is available in standard nominal diameters from DN80 (3") to DN250 (10"), and in nominal pressures from PN250 (ASME1500) to PN400 (ASME2500) as per EN 1092 normative. Larger diameters and higher pressures are possible. The SIP is also available in the customer’s choice of materials,

Schroeder Valves, a global specialist in pump protection, has announced that it is now offering a new type of valve for pressures from 140 to 250 bar – the Schroeder Intermediate Pressure Valve (SIP).  This series is designed for systems with frequent operation in the minimum flow range and will be used with boiler feed water circuits in gas and steam combined cycle power plants (CCPP) for the protection of centrifugal pumps.  According to Schroeder Valves, in the past decade, the operating mode of power plants has changed considerably. Historically, process operation was almost exclusively carried out close to the nominal load point of the plants; an area in which the bypass of the minimum flow valve is closed. Today, cases are increasing rapidly with significantly

ranging from carbon steels to super duplex. Schroeder Valves www.schroeder-valves.com

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