Back flow valves notice as "one groove analysis valves," are used in many vehicle hydraulic applications. One system test valves come in two predominant types--ball checks and flapper valves. Ball proof valves accept a ball bearing inside that plugs the orifice and prevents fluid from going back buttoned up the valve. Hydraulic impact seats the ball and deeper strength one tightens the seal.4. If fittings need replaced, now is the time to remove them by using the tubing cutter. After cutting the tubing below the fitting, remove old fitting and replace with a new ferrule and fitting.
1. Be acquainted that trial valves come in a incongruity of sizes. In usual, they are used in the vehicle braking process to prevent brake fluid from returning to the reservoir when under strength. Either type trial valves are used and installation is the equivalent for both types. Habitat a drip pan under tubing and test valve to be changed.
2. Using line wrench or conduit wrench, turn the Trimmings counter Watch experienced to loosen. Provided any force remains in the borderline, sanction it to be released while fittingd are loose. Continue turning the fittings counter-clockwise until they are completely disengaged.
3. Remove check valve from tubing and allow residual fluid to go in drip pan.
Flapper type valves cause a hinged movable flap that is pushed over the orifice when force tries to back flow. Scan on to memorize connect a back flow prevention valve.
Instructions
Use same procedure for the opposite fitting.5. Place new check valve up to new fitting on one end. Use line wrench and turn clockwise until fitting is snug. Be sure the check valve is pointing in the right direction. The check valve will have an arrow embossed into the valve. Make sure arrow points in the direction of flow from the line. Use a line wrench and attach a second fitting to the opposite end of check valve. Use service manual procedures for removing air from the line and dispose of fluid in drip pan in an OSHA approved container.
