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HYDROTEK® 4000

VALVE FUNCTIONS

1. CAM - Used to index the valve to the next zone and controls how many outlets

are to be used. May be changed to increase or decrease number of operating zones.

Secured to valve top with two cam retaining screws.

2. VALVE TOP - A high strength ABS plastic top secured with seven valve top

retaining screws.

3. VALVE BODY - A high strength ABS plastic housing.

4. INLET - Allows for slip and glue connection of a 1 1/4' pipe

5. OUTLETS - 4 outlet model - 1 1/4 PVC pipe / 6 outlet model 1' PVC pipe

CAM REPLACEMENT INSTRUCTIONS

Replacement cams are available to increase or decrease the number of operating

outlets on the HYDROTEK® 4000 Series Valve

BE SURE YOU HAVE THE CORRECT REPLACEMENT CAM. Except for the two zone

cam, cams for the four outlet valves and the six outlet valves are NOT

interchangeable. The correct bottom to be used is marked on the top of the cam.

To remove cam, remove two cam retaining screws and pry up gently with

screwdriver.

To install a new cam, partially insert the cam into the valve top and rotate it

counterclockwise while applying gentle downward pressure. This allows the upper

lug on the stem in the valve to slip into the cam. The cam should slip into place

easily. When installed correctly, the cam should slide down in place with NO

tendency to spring back. Improper installation will cause the valve to jam and

prevent the valve from advancing properly.

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CAUTION

Cams for operation of fewer than the full number of outlets have one or more

camming slots blocked. Because of this, its is important to make sure that the cam

is lowered in the valve so that the lug on the stem in the valve is inserted into an

open cam slot in the cam.

VALVE INSTALLATION INSTRUCTIONS

Prior to installation of HYDROTEK 4000® Series Valve, make sure that the system is

designed using adequate pipe sizes and control valves to ensure maximum

performance of the valve.

For installation with large terrain elevations, or applications with high lift

requirements such as overhead systems in greenhouses, the valve should be

installed at the highest point in the system, or check-valves should be installed near

the valve in the elevated lines to prevent the back flow of water from the higher

locations to the lower zones.

Pump Fed Applications: The HYDROTEK 4000® Series Valve can be installed

directly off the discharge side of the pump. The valve is cycled as the pump is

turned off and on. It is important to install the valve as close to the pump as

possible.

City Water Applications: For city water supplied applications, an inline solenoid

valve must be installed between the city water source and the HYDROTEK 4000®

Series Valve. Ensure that proper back flow prevention is used in compliance with

local codes.

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The HYDROTEK 4000® Series Valve may be installed below ground in a valve box

or directly buried.

When connecting the lines to the valve outlets, ensure that the correct cam is

installed. Install lines to outlets corresponding to the numbers on the cam. See

diagram for proper zone hookup of outlets.

Do NOT turn the valve upside down when gluing the inlet and outlet lines into the

valve as glue may run down into the valve and interfere with proper operation.

Allow glue to dry for at least two hours before operating or testing the valve. For

best results, use a multi-purpose glue.

To seal off any unused outlets, install a piece of PVC pipe at least six inches in

length to the outlet and cap the pipe. This will allow additional zones to be used.

In regions of the country where winter temperatures may cause damage to exterior

pipes, the HYDROTEK 4000® Series Valve should be winterized. To protect the

control valve and other irrigation components from damage, the entire system

should be drained or cleared using compressed air. Contact your K-Rain dealer for

more information on the winterization requirements in your area.

VALVE DIAGRAM

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