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Type 44-2 Pressure Reducing Valve · Type 44-3 Safety Shut-off Valve (SSV)

Type 44-2 Pressure Reducing Valve · Type 44-3 Safety Shut-off Valve (SSV)
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Type 44-2 Pressure Reducing Valve · Type 44-3 Safety Shut-off Valve (SSV) - 1

T 2623 EN Type 44-2 Pressure Reducing Valve · Type 44-3 Safety Shut-off Valve (SSV) Series 44 Self-operated Pressure Regulators Typetested by TÜV (for water) Application Pressure regulator for set points from 1 to 10.5 bar · Valve size DN 15 to 50 · PN 25 · Suitable for liquids, air and nitrogen up to 150 °C Safety shut-off valve (SSV) for protecting district heating plants The valve closes when the downstream pressure rises. The Type 44-2 Pressure Reducing Valve consists of a valve and an actuator with operating diaphragm. The Type 44-3 Safety Shut-off Valve (SSV) with integrated pressure reducing valve is equipped with an actuator with two diaphragms. The version with two independent operating diaphragm complies with AGFW (German District Heating Association) regulations concerning components in district heating systems. This regulator version continues to operate even after the operating diaphragm ruptures. In the event of a ruptured operating diaphragm in the actuator, the regulator continues to operate. An indicator at the actuator shows that the actuator is damaged. Special features •• Suitable for air, nitrogen, water and other liquids, provided these do not cause the materials used to corrode. Fig. 1: Protection of a house substation with a Type 44-3 SSV and SEV •• Single-seated valve with balanced plug •• The regulators comply with requirements of FW 504 published by AGFW (German District Heating Association). Versions (see Fig. 2 and Fig. 3) Series 44 Pressure Regulators with actuators for set point ranges from 1 to 10.5 bar · Valve sizes DN 15 to 50 · With welding ends (special version with threaded ends) · DN 32, 40 and 50 versions also available with flanged valve body Type 44-2 Pressure Reducing Valve with one operating diaphragm Type 44-3 Safety Shut-off Valve (SSV) with pressure reducing valve and two operating diaphragms. In the event of a ruptured operating diaphragm in the actuator, the regulator continues to operate. · Typetested according to AGFW document FW 504 Fig. 2: Type 44-3 SSV, version with welding ends SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 · sam

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Type 44-2 Pressure Reducing Valve · Type 44-3 Safety Shut-off Valve (SSV) - 2

Special version –– Restricted flow cross-section with lower KVS coefficient for DN 15, 20 and 25. –– With internal parts made of FKM, e.g. for use with mineral oils Principle of operation The medium flows through the valve (1) as indicated by the arrow. The position of the plug determines the flow rate across the area released between plug (3) and seat (2). The downstream pressure p2 to be controlled is transmitted over the external control line (11) to the operating diaphragm (6.1) where it is converted into a positioning force. This force moves the valve plug depending on the force of...

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Type 44-2 Pressure Reducing Valve · Type 44-3 Safety Shut-off Valve (SSV) - 3

Table 1: Technical data · All pressures in bar (gauge) Valve size Standard version KVS Special version coefficient Flanged body Pressure rating Max. perm. differential pressure Δp Leakage class according to IEC 60534‑4 (Type 44-2) Set point ranges 2), continuously adjustable Compliance Only the version for mineral oils can be used when air or nitrogen are used. Special set point ranges on request. Special version without type test Table 2: Materials · Material numbers according to DIN EN Type 44-2 and Type 44-3 (SSV) Pressure Regulators Valve body Red brass CC499K (Rg 5) · Spheroidal...

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Type 44-2 Pressure Reducing Valve · Type 44-3 Safety Shut-off Valve (SSV) - 4

Type 44-3 with flanged body (DN 32, 40 and 50 only) Type 44-2 · Version with welding ends Type 44-3 · Version with welding ends Specifications in parentheses () apply to DN 40 and 50 Version with threaded ends Table 3: Dimensions in mm and weights 15 Valve size Width across flats SW L1 with welding ends With flanged body (DN 32, 40 and 50) L3 Special version With threaded ends (male thread) L2 Ordering text DN … with welding ends, threaded ends or with flanged body (DN 32, 40 and 50 only) Set point range … bar Optionally, special version ... Specifications subject to change without notice...

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