FloPlast Ring Seal Double Coupler – SP105 110mm

Extending or repairing a stack, the FloPlast Ring Seal Double Coupler SP105 joins two plain ends of 110mm soil pipe, with a Ring Seal socket on each side.

When to use the FloPlast Ring Seal Double Coupler SP105

Use it to extend a soil stack beyond one length of pipe, or to join a cut-down plain end back into the run, inside or outside. Because the joints are Ring Seal, there is no solvent to wait on, and the stack can be taken apart later if needed.

Cut the pipes square and chamfer both ends. Apply silicone lubricant, push each pipe into the coupler and ease back slightly for expansion.

Clip the stack close to the coupler so the joint stays aligned. If a length of stack gets cracked, this coupler lets you cut the bad bit out and drop a fresh piece in.

Mark each pipe at the socket edge so you can spot any movement later.

Soil couplers from our Glasgow counter

Matching soil pipe is listed in our Flexible range, along with stack clips. Call in at Plumb Parts, 555 South Street, Glasgow G14 0QX, Mon-Fri 8am-5pm or Sat-Sun 8am-1pm, or order through the site.

Specification

• Brand: FloPlast
• Range: 110mm Ring Seal Soil
• Maker code: SP105
• Material: PVC-U
• Connection: Ring Seal socket on both sides
• Sizes: 110mm
• Standard or approval: BS EN 1329-1 and BS EN 1453-1, Kitemark KM 544331
• Max temperature: 70°C to 75°C continuous; hotter discharges for 2 minutes at most
• Suitable for: Joining plain-ended 110mm soil pipe in line

Common Questions

What is a double coupler used for? It joins two plain ends of 110mm soil pipe in a straight line. Use it to extend a stack beyond one length or to rejoin a cut-down pipe, inside or outside.

How do I fix a cracked or leaking soil stack? Cut out the damaged section and drop in a new piece of pipe, with an SP105 double coupler at each end.

How do I fit the SP105? Cut both pipes square and chamfer the ends. Apply silicone lubricant, push each pipe in and ease it back slightly for expansion.

Do I need solvent cement? No, both sides are Ring Seal joints, so there’s no glue to wait on and the stack can be taken apart later if needed.

How much room should I leave for expansion? FloPlast’s fixing guide says to draw each pipe back about a centimetre from the bottom of the socket.

Will it fit another maker’s soil pipe? FloPlast state their 110mm systems match other manufacturers, but try the fit dry first to be sure.

Can it take hot discharges? It’s rated for 70°C to 75°C continuous, with hotter discharges allowed for 2 minutes at most.

Datasheets

• FloPlast Soil & Waste Systems Brochure (PDF)