Connecting LG F4WV710P1, RC90V9AV3Q Washer and Dryer to Single 3m Drain: Water Retraction Issues

Question 1

Yes—share a single drain by joining both hoses at the wall standpipe, not mid-hose. Install the tee at the wall inlet. Route the washer hose in an inverted U at the standpipe entry. This setup minimizes backflow and leaks during pump-out. [Elektroda, Kenworth 18, #19037489]

Answer

Yes—share a single drain by joining both hoses at the wall standpipe, not mid-hose. Install the tee at the wall inlet. Route the washer hose in an inverted U at the standpipe entry. This setup minimizes backflow and leaks during pump-out. [Elektroda, Kenworth 18, #19037489]

Question 2

A low, mid-run tee lets the washer pump push water up the other branch. “Separate drain hoses from both devices would solve this problem.” Move the junction to the wall standpipe instead. That change stops forced flow into the dryer hose. [Elektroda, Kenworth 18, #19037869]

Answer

A low, mid-run tee lets the washer pump push water up the other branch. “Separate drain hoses from both devices would solve this problem.” Move the junction to the wall standpipe instead. That change stops forced flow into the dryer hose. [Elektroda, Kenworth 18, #19037869]

Question 3

At the wall drain/standpipe entrance. “You should use the tee only at the drain pipe in the wall.” Avoid tees behind the stack or on the floor. Keep both hoses independent until they reach the standpipe. [Elektroda, Kenworth 18, #19037489]

Answer

At the wall drain/standpipe entrance. “You should use the tee only at the drain pipe in the wall.” Avoid tees behind the stack or on the floor. Keep both hoses independent until they reach the standpipe. [Elektroda, Kenworth 18, #19037489]

Question 4

Yes. Shape the hose into a firm inverted U near the standpipe. This is the arrangement recommended in washing machine manuals. It helps deter siphoning and stabilizes the connection height. [Elektroda, Kenworth 18, #19037489]

Answer

Yes. Shape the hose into a firm inverted U near the standpipe. This is the arrangement recommended in washing machine manuals. It helps deter siphoning and stabilizes the connection height. [Elektroda, Kenworth 18, #19037489]

Question 5

One expert recommends rotating the angle valve so the mechanical Aqua Stop points vertically down. The goal is reliable leak actuation at the tap. If it currently points sideways, rotate it 180° for a vertical orientation. [Elektroda, Kenworth 18, #19037489]

Answer

One expert recommends rotating the angle valve so the mechanical Aqua Stop points vertically down. The goal is reliable leak actuation at the tap. If it currently points sideways, rotate it 180° for a vertical orientation. [Elektroda, Kenworth 18, #19037489]

Question 6

Yes. Another expert states orientation does not affect operation, so horizontal mounting still works. You can mount it discreetly behind the washer if space is tight. [Elektroda, zhudomel, post #19042469]

Answer

Yes. Another expert states orientation does not affect operation, so horizontal mounting still works. You can mount it discreetly behind the washer if space is tight. [Elektroda, zhudomel, post #19042469]

Question 7

Yes. Lint and hair can clog the trap and restrict flow. Inspect the siphon and clear any buildup. A slow or blocked trap increases pressure and encourages backflow through a shared tee. Clean it before changing the hose layout. [Elektroda, stanislaw1954, post #19036528]

Answer

Yes. Lint and hair can clog the trap and restrict flow. Inspect the siphon and clear any buildup. A slow or blocked trap increases pressure and encourages backflow through a shared tee. Clean it before changing the hose layout. [Elektroda, stanislaw1954, post #19036528]

Question 8

Match the common section to at least the washer hose diameter. Hoses from the washer and dryer may differ, so use compatible tees or adapters. Undersized junctions increase restriction, noise, and leak risk at clamps. [Elektroda, stanislaw1954, post #19036528]

Answer

Match the common section to at least the washer hose diameter. Hoses from the washer and dryer may differ, so use compatible tees or adapters. Undersized junctions increase restriction, noise, and leak risk at clamps. [Elektroda, stanislaw1954, post #19036528]

Question 9

It can be. “...may have a negative impact on the dryer.” Prevent forced flow into the dryer hose by keeping drains separate until the wall standpipe. That avoids exposing the dryer’s condensate path to wastewater. [Elektroda, Kenworth 18, #19037869]

Answer

It can be. “...may have a negative impact on the dryer.” Prevent forced flow into the dryer hose by keeping drains separate until the wall standpipe. That avoids exposing the dryer’s condensate path to wastewater. [Elektroda, Kenworth 18, #19037869]

Question 10

Use this quick fix:

Answer

Use this quick fix:

Move the junction to the wall: install a tee at the standpipe inlet.
Route each appliance’s hose separately to the wall.
Form an inverted U at the standpipe entry to set the proper height. This arrangement prevents crossflow between hoses. [Elektroda, Kenworth 18, #19037489]

Question 11

Extend the wall drain toward the appliances and terminate behind or beside the washer. Remove the existing siphon if needed and finish at standpipe height. Then connect both hoses at the new wall inlet with a proper tee. This avoids mid-run extensions. [Elektroda, zhudomel, post #19037964]

Answer

Extend the wall drain toward the appliances and terminate behind or beside the washer. Remove the existing siphon if needed and finish at standpipe height. Then connect both hoses at the new wall inlet with a proper tee. This avoids mid-run extensions. [Elektroda, zhudomel, post #19037964]

Question 12

Longer runs increase hose volume. During pump-out, water can climb into a shared branch before reaching the trap. The original poster saw water rise toward the dryer with a 3 m drain and a low tee. Shift the junction to the wall to stop it. [Elektroda, misiek-puchatek, post #19035981]

Answer

Longer runs increase hose volume. During pump-out, water can climb into a shared branch before reaching the trap. The original poster saw water rise toward the dryer with a 3 m drain and a low tee. Shift the junction to the wall to stop it. [Elektroda, misiek-puchatek, post #19035981]

Question 13

Reseat the hoses fully on the fittings and tighten quality worm-drive clamps. Recheck that each hose meets the tee at the correct diameter. Re-clamping often stops minor seeping at the dryer branch connection. Avoid over-tightening to prevent hose damage. [Elektroda, misiek-puchatek, post #19036699]

Answer

Reseat the hoses fully on the fittings and tighten quality worm-drive clamps. Recheck that each hose meets the tee at the correct diameter. Re-clamping often stops minor seeping at the dryer branch connection. Avoid over-tightening to prevent hose damage. [Elektroda, misiek-puchatek, post #19036699]

Question 14

Don’t rely on internal ball removal to cure backflow. Rework the drain path instead. Remove the siphon, extend the wall drainage toward the washer, and finish at standpipe height. Then join both hoses at that wall inlet with a suitable tee. [Elektroda, zhudomel, post #19037964]

Answer

Don’t rely on internal ball removal to cure backflow. Rework the drain path instead. Remove the siphon, extend the wall drainage toward the washer, and finish at standpipe height. Then join both hoses at that wall inlet with a suitable tee. [Elektroda, zhudomel, post #19037964]

Question 15

They can share one standpipe if you join them at the wall. Avoid a mid-run tee. As one expert noted, “separate drain hoses from both devices would solve this problem.” Route each hose independently to the wall junction. [Elektroda, Kenworth 18, #19037869]

Answer

They can share one standpipe if you join them at the wall. Avoid a mid-run tee. As one expert noted, “separate drain hoses from both devices would solve this problem.” Route each hose independently to the wall junction. [Elektroda, Kenworth 18, #19037869]

Connecting LG F4WV710P1, RC90V9AV3Q Washer and Dryer to Single 3m Drain: Water Retraction Issues

Post #1

Post #2

Post #3

Post #4

Post #5

Post #6

Post #7

Post #8

Post #9

Post #10

Post #11

Post #12

Post #13

Post #14

Post #15

Post #16

Post #17

Post #18

Post #19

Post #20

Didn't find an answer? Ask Artificial Intelligence

Topic summary