. Science of railways . d. 209. Handle Latch Spr. 202. Valve. 206. Valve Spring 210. Warning Valve 203. Handle 207. Handle Washer. 211 Warning Valve Sc, 204 Valve Cap 208. Handle Cap Screw. These sander traps are lead lined. The resilient propertiesof the lead resist the sand blast action, and for that reasonthe traps give very long service. The use of a special engineers sanding valve is recom-mended. VILOCO TYPE K 14-INCH SINGLE ENGINEERS VALVE The 1/4-inch Engineers Valve with warning port formerly used for the control of supply of air to single pneumatic 680 LOCOMOTIVE APPLIANCES. Sanders
. Science of railways . d. 209. Handle Latch Spr. 202. Valve. 206. Valve Spring 210. Warning Valve 203. Handle 207. Handle Washer. 211 Warning Valve Sc, 204 Valve Cap 208. Handle Cap Screw. These sander traps are lead lined. The resilient propertiesof the lead resist the sand blast action, and for that reasonthe traps give very long service. The use of a special engineers sanding valve is recom-mended. VILOCO TYPE K 14-INCH SINGLE ENGINEERS VALVE The 1/4-inch Engineers Valve with warning port formerly used for the control of supply of air to single pneumatic 680 LOCOMOTIVE APPLIANCES. Sanders has not proven satisfactory on account of breakage,and the fact that engineman cannot easily graduate the supplyof air to the sander. Illustration is shown of Type K 14-inch Engineers Valvewhich is interchangeable with the older valves. It has fourgraduations for the supply of air to the sander, with fournotches on the quadrant corresponding to these graduations,and is fitted with a warning port which sounds immediately. Viloco Duplex Engineers Valve. the valve is open, should the engineman forget to shut off thevalve when he can dispense with the use of sand. DUPLEX ENGINEERS VALVE WITH WARNING ATTACH-MENT FOR OPERATING PNEUMATIC SANDERSThis valve has three graduated openings for both thefrontand rear sander. This is accomplished by means of portsof different diameter through the valve, and which portsregister with notches on the valve quadrant, enabling theengineman to apply the sander lightly or to its full capacity. LOCOMOTIVE APPLIANCES. 681 The supply of air is taken from the bottom of the valve, whichconnection serves as a means of securing the valve to thesupporting bracket attached to the boiler head. The warning attachment operates immediately the handleis moved off the center notch of the ctuadrant and serves as awarning to the engineman that the sander is in operation. Hemay close the warning port by slight pressure on the button-headed valve 10, but as soon as his
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