£ fives north american Fives North American Combustion UK, Ltd. SAF - Adjustable Flow Valve Bulletin 4.6 August 2009 SAF - Features ■ Straight through or angled mounting ■ For use with most gaseous fuels, and air ■ Simple accurate adjustment ■ Robust cast iron construction ■ Operating pressures up to 1.75 bar ■ 30% greater capacity with angled mounted unit The Adjustable Flow Valves, available in nine sizes from Rp3/8 to Rp3, are designed to control gas flows where flow rates need to be set or reset periodically. It is a much more flexible alternative to fixed orifice plate flow control, and provides easy, precise flow adjustment. The valve has been specially designed to incorporate a flow adjuster which is operated by an Allen type set screw arrangement, concealed under a screw lock cap. This hidden adjustment minimises the potential for tampering with preset flows. The valve is designed for flow control only and is not suitable for tight shut-off use. This rugged design valve has been developed for heavy industrial use and can be used on any commercially available gas. Refer to FNAC for applications with coke oven gas or air. The valve will operate with gas pressures up to 1.75 bar. Available in straight through or angled versions, the valve should be an integral part of any gas fired burner control system. Maintenance/Spares Under normal circumstances, the SAF valve will require no maintenance. There are no spares for this item. Installation / Operation It is important to install the SAF valve so that the port identified by an arrow is used as the outlet. It must be installed downstream of any other valves and as close to the burner gas inlet as possible allowing easy access for adjustment. Adjustment is made by removing the aluminium hexagon cap from the valve body, revealing the piston stem. For all valves an Allen-key is needed. An increase in flow rate is obtained by a counterclockwise adjustment of the piston stem. Replace hexagon cap and seal ring once desired flow has been set. Capacities and Specifications Adjustable flow valve capacities in Nm3/h Note 1: The capacities for an angled mounting are 30% higher. Note 2: The listed capacities are the maximum flows when fully open. Note 3: Flows are based on 15° C ambient temperature. Fives North American Combustion UK, Ltd. Heath Mill Road, Wolverhampton WV5 8BD England Tel +44 (0) 1902 891200 Fax +44 (0) 1902 895552 email: [email protected] www.fivesgroup.com/fivesna

WARNING: The data outlined is for information only and does not form part of any contract. Our policy is one of continuous improvement and we therefore reserve the right to modify specifications or dimensions without prior warning. Situations dangerous to personnel and property can develop from incorrect installation and operation of combustion equipment. Fives North American Combustion UK, Ltd urges compliance with International, National and Local Safety Standards and that installation is carried out by properly qualified personnel. Fives North American Combustion UK, Ltd. Heath Mill Road,...