1.65 GPM per outlet at 5′ distal pressure

Installation Steps:

1. Spider Valve® assembly must be installed at the high point of the system such that the effluent will gravity drain from the valve to the disposal trenches. Consult site plan and Figure 1.
2. At least 3′ of distal pressure should be maintained on the manifold to ensure equal effluent splitting.
3. For distribution systems with unequal length disposal trench lines order the Spider Valve® with blank flow control washers. Use the following chart to determine the correct flow rate for the diameter hole that must be field drilled in the flow control washer. Glue washers into manifold connections as shown.
4. For distribution systems with equal length disposal trenches then drill ¼” diameter holes in all washers or order the unit with pre-drilled and assembled ¼” washers.
5. The manifold should be installed in a Zoeller Pump 24″ diameter access riser and lid (See FM1572).
6. Bed manifold area with 2″ of pea gravel. Manifold should be installed level.
7. The incoming line should be pressurized with at least 3′ of distal pressure. The manifold must be connected to the pump line with a 2″ female PVC pipe connection.
8. Outlet pipes contain 3′ of flexible PVC pipe with a 1¼” diameter connection. Run 1¼” or larger pipe away and downgrade from manifold to individual trenches (check local codes).
9. Check that all connections are glued appropriately and watertight. Backfill around manifold with pea gravel until 2″ pipe is almost buried. This will ensure the manifold does not move and stays close to level.
10. Place access riser and lid around manifold and finish backfilling. Landscape as desired.

Design Tools

• Dimensional Drawing, Spider Valve SK2322