Honeywell SINGLE-SEATED VALVE THE V5051A IS A CAGE TYPE, SINGLE SEATED VALVE FOR CONTROL OF STEAM, AIR OR OTHER NONCOMBUSTIBLE GASES IN HEATING, AIR CONDITIONING AND OTHER SYSTEMS REQUIRING TIGHT SHUTOFF. IT IS USED IN 2-POSITION, PROPORTIONAL OR FLOATING CONTROL SYSTEMS. A Q601K LINKAGE AND A MODULATOR MOTOR ARE REQUIRED FOR OPERATION, [1 Provides tight shutoff with extremely low leakage. 0 Pressure balanced cage type construction, 0 Sizes range from 2-1/2 to 6 in. [63.5 to 152.4 mmj.
MODEL: V5051A Single-chested Valve for control of steam, liquids, air or other noncombustible gases. (Not suitable for combustible gas service.) BODY: Cast iron, straight-through, non reversible, 125 kPa] ANSI flanges. Maximum temperature 300 C]. Pressure ratings— Steam service 55 psi [379 kPa] maximum. Liquids at 300 F {149 C1, 140 psi [960 kPa] maximum. Liquids at 100 F [38 CJ, 150 psi {1034 kPa] maximum, SIZES: 3,4, 63.5, 76.2, 101.6, 127.0, or 152.4 mime.
LINKAGE AND MOTOR SELECTION. Use the V5051A Valve with the QB01K Linkage and the M644C Modulator Motor (2-position or floating, non spring return) or M944C Modulator Motor (proportional, innerspring-returm) with the 7640PN internal Trans. former. For additional information on motors and linkages, refer to the appropriate Honeywell specification sheets. DIMENSIONS: See Fig. 1 and Dimensions Table. WHEN INSTALLING THIS PRODUCT, , . 1. Read these instructions carefully.
Before installing linkage and motor, make sure that valve stem operates freely. Impaired stem operation may indicate that the body was twisted by faulty piping or that the stem was bent hy rough handling. Either of these conditions may require replacement of the valve. Check the valve body and connections for leaks. After installing the linkage and motor, check their operation according to information furnished with these controls.