MCK / SMCK Pitless Kit
Installation Guide
What You’re Installing
What’s in the Kit
Kit material varies: MCK = No Lead Brass, SMCK = Stainless Steel.
Tools & Supplies
Before You Start
- Confirm 4", 5", 6" well casing
- Make sure the casing top is accessible
- Know your bury depth and local well code
- Have lifting capacity for the pump and drop pipe
- Plan to finish with a watertight or ventilated well cap, depending on code
1. Assemble the Internal Parts
2. Adjustment Tool
Use Merrill MCK Adjustment Tool
MCKADJTOOL3. Measure the Casing
Before Page 3
✓ Double-check the hole location
✓ Check top notch alignment
✓ Have drill and hole saw ready
Pull Pipe Length by Bury Depth
Adjustment tool: Use Merrill MCKADJTOOL.
| Bury depth | 1′ | 2′ | 3′ | 4′ | 5′ | 6′ | 7′ | 8′ |
|---|---|---|---|---|---|---|---|---|
| Pull pipe | 22" | 34" | 46" | 58" | 70" | 82" | 94" | 106" |
1. Drill the Casing Hole
2. File the Top Notch
3. Install Discharge Hub
4. Lower the Assembly & Complete Installation
Complete these steps in order:
Attach pump & drop pipe
Attach the pump and drop pipe to the internal pitless body.
Lubricate the O-ring
Apply Merrill Anti-Seize/Gasket Lube to the O-ring before lowering the assembly.
Lower into the casing
Lower the pump, drop pipe, and pitless body assembly into the well casing.
Align the support bar
Line up the mark/arrow on the support bar with the notch or mark at the top of the casing.
Set the seal
Turn the stainless steel screw clockwise until the O-ring seals against the inner wall of the casing.
Install the well cap
Finish with a watertight or ventilated well cap, depending on applicable state well code.
