How To Install 3-Way Ball Valves On A Modular Tank
Learn how to easily add capacity to your existing sprayer with 3-way valves and a modular spray tank.

How To Install 3-Way Ball Valves With A Modular Spray Tank:


Whether you're looking to run separate spray solutions or just add capacity to your existing system, the 3-way valve kit along with a modular spray tank from Gregson-Clark allows professional operators a wide range of possibilities. With a modular tank and 3-way valves you are able to draw from tank 1 or 2 along with transfer liquids between tanks. You cannot draw from both tanks at the same time.

To install the valves we will need to start by removing the existing suction and agitation lines along with hose barbs from the top of the tank.

Tip: Warming up the hose on the barbs with a heat gun will help with removal of the hose.

Spray Tank Hose Barb removal

With the hose and barbs removed, replace barbs with the 3-way valves. Each valve will have a threaded nipple on the bottom that will thread into the existing tank fittings. When installing, use a pipe sealant or Teflon tape to seal the threads. On the 3/4" valve, the straight hose barb on the common port will need to be removed to thread on the valve. Once the valve is set, re-install the hose barb using a pipe sealant. When positioning the valves make sure the side barbs are pointed in the same direction as the barbs that were removed. The existing hoses that were removed will re-connect to these barbs.

Re-install the hose we previously removed from the main tank onto the side barbs of the valves. These are the common lines and will always be in use.

3-way valves on spray a spray tank

When purchasing 3-way valves with a modular tank, the tank will be plumbed with 8 feet of suction and agitation hose. Different installations will require different hose lengths; the 8 feet of hose can be cut shorter for your specific setup.

Modular Add-on spray tank

The hoses coming from the modular spray tank will connect to the top of the valves using the 90 degree hose barbs with fly nuts. The hose barbs will need to be installed after your desired hose length has been cut.

Tip: Using a heat gun to warm the hose will make installation much easier. Using silicone on the suction barb will help provide an airtight seal.

Connect the 1 1/4" barb and fly nut to the top of the suction ball valve and the 3/4" line to the top of the 3/4" valve.

3-way valves installed on skid sprayer

With all the components installed you can now test the system. The valve handle position will dictate which tank is the supply tank and which tank is the return. When both handles are pointed up the system is pulling from the modular tank. When both levers are horizontal the sprayer is pulling off the main tank which the 3-ways are connected to. When you have one handle horizontal and the other vertical you are drawing from one tank and returning to the other.

For any questions regarding adding a modular spray tank to an existing sprayer please call us at 1-800-706-9530.

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