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False 2- way Control Valves type L2SR, Gun metal2.2.06- I PN 16, DN 15 – 50 mm, 2 seats, Reverse actingGB- 1 Characteristics • Nominel pressure PN 16 • Regulating capability • Reverse acting ( normally closed) • For cooling water and lubricants • Linear characteristic Applications Valves type L2SR are mainly intended for control of cooling water, sea water and lubricating liquids. The valves are used in conjunction with temperature- or pressure dif ferential regulators in industrial processes or marine installations - especially in control systems for cooling. As the reverse acting valves are held in closed position by means of a built- in spring, the max. differential pressure, ?p L , against which a valve can close depends on the spring and when open-ing the valve, the actuator has to over-come the spring force. Please find the below max. allowable values of ?p L as well as the max. allowable inlet pressures for opening the valves, p 1max , for various actuator forces. Dimensioning For sizing of control valves and selection of actuators please see “ Quick Choice” datasheet no. 9.0.00. Design The valve body, seats and cone – are made of gun metal RG 5 and the stem of stainless steel – the valve body with threaded ends according to ISO 7- 1. The thread for the actuator connection is G1B. The valves are double- seated and designed for tight closure. The leakage rate is less than 0.5% of the full flow ( according to VDI/ VDE 2174). Quality Assurance All valves are manufactured under an ISO 9001 certification, and are pressure and leakage tested before shipment. For marine applications the valves can be supplied with relevant test certificates from recognized classification societies. Function – Reverse Acting Without an actuator being connected, the valve is held in closed position by means of a spring. With pressure on the spindle the valve opens. In connection with thermostats or valve motors the valves act as “ cooling” valves, i. e. they open at rising temperatures. Technical Data Materials: – Valve, body, Gun metal RG 5 seats and cone W. No. 2.1086 – Stem Stainless Steel W. No. 1.4436 Nominal pressure PN 16 Seating Double seated Flow characteristic Linear Regulating capability kvs > 25 kvr Leakage rate = 0.5% of kvs Temperature range See pressure/ temperature diagram Mounting See page 2 Connection threads ISO 7- 1 Subject to change without notice. Specifications TypeConnectionOpening dia. kvs- valueRated TravelMax. ?p L Actuator ForceCorresp. p 1max Weight R P mmm3/ hmmbarNbarkg 15L2SR ½ " 15 2.75315.020011.01.0 40016.0 20L2SR ¾ " 20 5.00411.02009.21.0 40016.0 25L2SR1" 25 7.5057.12007.01.0 40016.0 32L2SR1 ¼ " 3212.5064.62004.81.5 40016.0 40L2SR1 ½ " 4020.0082.740016.03.0 50L2SR2" 5030.0091.840016.04.0 kvs > 25 kvr 0130200 11 15.5 16 Bar Pressure/ Temperature Diagram According to DIN 2401 100225° C Clorius Controls A/ S Tempovej 27 · DK- 2750 Ballerup · Denmark Tel.: + 45 77 32 31 30 · Fax: + 45 77 32 31 31 E- mail: mail@ cloriuscontrols. com Web: www. cloriuscontrols. com

False GB- 2 2- way Control Valves type L2SR, Gun metal2.2.06- I PN 16, DN 15 – 50 mm, 2 seats, Reverse acting Definition of kvs- value The kvs- value is identical to the IEC flow coefficient kv and defined as the water flow rate in m3/ h through the fully open valve by a constant differential pressure, ?pv, of 1 bar. Mounting The valves can be installed with vertical as well as horisontal spind les. For valve temperatures of max. 170 º C, the thermostat/ actuator can be fitted below or above the valve. For valve tempera-tures above 170 º C, a cooling unit of type KS4 has to be applied with connection downwards. Strainer It is recommended to use a strainer in front of the regulating valve if the liquid contains suspended particles. Type L H H1 mm mm mm 15 L2SR 75 43 80 20 L2SR 87 45 80 25 L2SR 99 50 80 32 L2SR 113 55 80 40 L2SR 129 65 90 50 L2SR 153 70 94 Dimension sketch Accessories Manual Adjusting Device The device has a built- in stuffing box. For tightening and manual ope ration of valves when an actuator has not been fitted, e. g. during periods of construction ( max. 170 º C). Cooling Unit KS- 4 Cooling unit protecting the stuffing box of the motor/ thermostat. To be applied at valve temperatures be tween 170 º C and 225 º C. Subject to change without notice. H H1 L G1B Clorius Controls A/ S Tempovej 27 · DK- 2750 Ballerup · Denmark Tel.: + 45 77 32 31 30 · Fax: + 45 77 32 31 31 E- mail: mail@ cloriuscontrols. com Web: www. cloriuscontrols. com