Jay R. Smith 1340 Roof Drains | SCPM Pan | 8.50″ bowl x thread


Kit components:

Two Jay R. Smith 8.50″ side outlet roof drains with cast iron domes and membrane clamps, one water dam 8.50 X 2″ h, SCP double sump pan, (2) adapter plates, two hardware kits and two standard no-hub couplings.

Steel adapter (thread x no-hub), specialty no-hub coupling (cast iron to plastic)
Shipping to the USA including Alaska and Hawaii, Canada
see descriptions below for more info


Jay R. Smith 1340 Roof Drains and Overflow... When should you use it?   

Vertical space reqs for a side outlet roof drain

Here are some basic guidelines for using the Jay R. Smith 1340 roof drains and SCP sump pan:

    • you have limited space between the roof and ceiling
    • when the roof drain will not be accessible after installed, such as above a hard lid (drywall or plaster ceiling) or in a concrete deck.
    • when you are working on a residential or light commercial project
    • when you want a combination roof drain set up.  That is, the primary and secondary (overflow) roof drains. 


The dual Jay R. Smith 1340 roof drains have functionality and adaptability not found in any other flat roof drain systems! 

Jay R. Smith 1340 roof drain and overflow and SCP roof drain sump pan

The Jay R. Smith 1340 roof drains kit is intended to lower or sump two side outlet roof drains using model SCP sump pan. And, using the 2″ water dam, converts one of the drains to an overflow to comply with the plumbing code. 

It is common to encounter a situation where there is limited space to install your roof drains between the ceiling and roof.  To address this issue, the Jay R. Smith company, and all roof drain manufacturers,  have forged the elbow or bend into the body of the roof drain bowl during the manufacturing process. This results in a lower profile roof drain that will fit a limited space.

Smith, Zurn roof drain, roof drain,Zurn flat roof drains

Jay R. Smith 1340 roof drains

  • The pipe sizes are available from 2″ to 4″ diameter and the drain outlet is a threaded connection.
  • The drain bowl diameter is 8-1/2″
  • Other components include a flashing clamp and a leaf grate.
Model SCP roof drain sump pan-standard is designed to lower or sump the Frank Pattern™ Cast Iron 8 1/2″ Diameter Combination Roof Drain and overflow

Model SCP Roof Drain Sump Pan...

  • Laser fabricated from 18 gauge galvanized steel sheet metal which results in a superior grade product.
  • The pan dimensions are 34.50″l x 26″w x 2.00″ deep sump
  • Fits between joists that are 16″ on center
  • There is no need for an underdeck clamp as the roof drain bolts to the pan in six places.
Smith thread adaptor

Threaded adapter

The purpose of the adapter is to allow you to transition from a threaded connection to a no-hub connection. 

To install the adapter, simply screw it into the threads on the roof drain outlet, then attach your piping to the other end using your no-hub coupling of choice. NOTE: you can also use a male adapter in ABS or PVC rather than the adapter. 

Available in 2″ to 6″ pipe sizes for this roof drain. 

Here Are Some Useful Roof Drain Installation Tips

  1. Pressure test and flow test the entire installation for at least 15 minutes. In this way you can assure there are no leaks. If your roof isn’t thick enough. use a sump pan.  SEE HERE
  2. Always make sure that the primary and overflow roof drainage piping is installed independently of each other. 

Also, if you need more information on the full installation procedure visit the “HOW TO INSTALL A ROOF DRAIN” page.

If you prefer bottom outlet roof drains, please review the link below

Jay R. Smith 148 Roof Drain | SCP Sump Pan 8.50″ x 8.50″

Additional information

Weight 50 lbs
Dimensions 24 × 24 × 12 in
Pipe Size

2 inch, 3 inch, 4 inch

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