SAPAG-0006-ENG-2304 The maximum pressures and temperatures depend on the pressure/temperature ratio, materials, size (DN) and nature of the fluid. Performance Non-return valve with very high dynamic response to avoid the water hammer: • Partial opening, • Silent running, • Compact design, • Virtually no wear and tear on the obturator • Fast closing due to short obturator motion (effective protection of the valve against pressure peaks and of the pumps against flow reversal) CHECK VALVE Body type Design Standard Manufacturer Standard The design of the diffuser is the direct result of hydraulic studies and tests, carried out in renowned laboratories. It provides effective guidance for the fluid with the same flow velocity in all valve sections. A complex part requiring a high level of quality, SAPAG VALVES has entrusted the production of the raw part to partners recognized for their high technicality. The sealing area is faultless, i.e. no repairs are permitted, which guarantees a homogeneous maintenance of the metallurgical properties. Counter flange (Wafer) or Real shell (Double Flange Version) SAPAG VALVES applies the same quality requirements as for the body. It ensures precise guidance of the return spring. Its careful machining guarantees the external sealing of the valve. Instantaneous dynamic response thanks to its density close to the fluid and its very short run. The hardness of the obturator takes into account the design of the sealing surfaces and conditions of use. It guarantees the maintenance of the properties of the valve’s tightness over time. Static seals and absence of rubbing thanks to the floating design of the obturator limit or eliminate the need for periodic maintenance. The features are calculated to guarantee optimal performance of the valve. Its main function is to hold the valve on the sealing surfaces at zero differential pressure. It therefore avoids mixing upstream and downstream fluids. The material used is adapted and selected according to the fluid flowing through the valve. The spring in the standard version allows operation in systems with low line speeds, but also in systems with high deceleration (smooth operation). Dynamics Charecteristics Swing check valve (Strong spring) FOLLOW-UP & ADVICE Swing check valve (Standard spring) Swing check valve (weak spring) SAPAG VALVES Dual Plate FRENCH INDUSTRIAL VALVE MANUFACTURER 2 Rue du Marais 80400 Ham, FRANCE +33 (0)3 23 81 43 00 [email protected] w w w. s a p a g - v a l v e s . c o m This document is the exclusive property of SAPAG VALVES. The use, reproduction, communication to third parties of this document must be subject to prior written authorization from us. The information contained in this document is given for information pur

SAPAG-0006-ENG-2304 Part List Designation Ductile iron Stainless steel Austenitic cast iron Counter Flange (2A) or Rear Shell (2B) Ductile iron Super Duplex Austenitic cast iron Stainless steel PTFE Stainless steel CLASAR® check valve Dual plate check valve (reinforced spring) Dual plate check valve (standard spring) Swing check valve (reinforced spring) Swing check valve (standard spring) Conventional swing check valve This document is the exclusive property of SAPAG VALVES. The use, reproduction, communication to third parties of this document must be subject to prior written authorization...