RELIABILT Valves & Valve Repair
RELIABILT shut-off valves, ball valves, gate valves, and repair kits for residential plumbing.
RELIABILT valves control water flow to fixtures and appliances, priced from $5 to $30. Quarter-turn ball valves are the modern standard (rotate handle 90 degrees to open/close). Older gate valves (multi-turn wheel) are also available for matching existing plumbing. Available in 1/2" and 3/4" sizes, brass and chrome-plated. Valve repair kits include replacement stems, washers, and packing for fixing leaky valves without full replacement.
Quarter-Turn vs Gate Valves
| Feature | Quarter-Turn Ball | Gate Valve |
|---|---|---|
| Operation | 90-degree lever turn | Multiple wheel turns |
| Reliability | Rarely seizes, even after years unused | Often seizes if not used regularly |
| Emergency shutoff | Instant, one motion | Slow, multiple turns |
| Price | $8-20 | $5-15 |
| Recommendation | Always choose this for new installs | Replace with quarter-turn when possible |
How to Choose Valves
Quarter-turn ball valves are the standard: Always choose a quarter-turn ball valve for new installations. The 90-degree lever operation is faster and more reliable than the multi-turn wheel of a gate valve. Quarter-turn valves rarely seize, even after years of disuse, making them dependable for emergency shutoffs.
Connection type: Valves come in compression (no soldering, tightens with a nut and ferrule), push-fit (push pipe into valve, no tools needed), sweat (requires soldering to copper pipe), and threaded (screws onto threaded pipe). For DIY installation, compression and push-fit are the easiest. Compression is the most common under sinks and toilets.
Size: Most residential fixture valves are 1/2" inlet x 3/8" outlet. The 1/2" side connects to the copper or PEX supply pipe in the wall. The 3/8" side connects to the supply line going to the fixture. Measure both your pipe and your supply line before buying.
Material: Brass valves are the standard for residential plumbing. Chrome-plated brass is the same valve with a cosmetic finish for visible installations. Avoid plastic valves for pressurized water lines. For the main water shutoff, use a full-port brass ball valve for maximum flow.
Full-port vs standard-port: A full-port ball valve has an internal opening the same diameter as the pipe, providing unrestricted flow. A standard-port valve has a slightly smaller opening, which slightly restricts flow but costs less. For fixture shut-offs, standard-port is fine. For the main water shutoff, always use full-port to maintain maximum water pressure throughout the house.
Push-fit option: Push-fit valves slide directly onto copper or PEX pipe without tools, solder, or compression nuts. They are ideal for DIY installations and emergency repairs. Push-fit valves cost more than compression valves but save significant installation time. Ensure the pipe end is cut square and deburred before inserting into a push-fit valve.
Issues and Fixes
| Gate valve seized open | Old gate valves commonly seize in the open position after years of disuse. Do not force the handle, as the stem can snap. Apply penetrating oil around the packing nut and stem, wait 15 minutes, and try gentle turning. If it will not budge, plan a replacement. Shut off the main water supply first. |
| Valve dripping from handle | A drip from the valve handle or stem (not the connections) indicates worn packing. On a gate valve, tighten the packing nut 1/4 turn clockwise. On a ball valve, the packing is not user-serviceable; replace the entire valve if it drips from the stem. |
| Valve does not fully stop water | A valve that allows water to pass when fully closed has a damaged internal seal. Gate valves develop this as the gate wears. Ball valves develop this rarely. In either case, replace the valve. A valve that does not fully close is a safety hazard during plumbing emergencies. |
| Compression fitting leaking | Tighten the compression nut 1/4 turn. If still leaking, shut off the main water, remove the supply line, inspect the brass ferrule for damage, and replace if deformed. Apply a thin layer of pipe joint compound to the ferrule for an improved seal. See plumbing parts for sealants. |
| Valve handle stuck | A quarter-turn ball valve handle that is stiff to operate likely has mineral deposits on the stem. Apply penetrating oil where the stem enters the valve body. Work the handle back and forth gently to break up deposits. If the valve still does not operate smoothly, replace it. A valve that is difficult to operate defeats its purpose as an emergency shutoff. |
Valve problems are more dangerous than they appear. A valve that does not close fully cannot protect your home from a plumbing emergency. Test every shut-off valve annually and replace any that do not perform reliably.
Long-Term Care
Exercise valves annually: Turn every shut-off valve in your home off and on once per year. This prevents internal components from seizing due to mineral buildup and corrosion. Include under-sink valves, toilet valves, washing machine valves, and the main water shutoff. Mark your calendar for an annual valve check.
Know your main shutoff: Locate your main water shutoff valve and verify it works before an emergency. The main shutoff is typically near the water meter at the front of the house or where the main line enters the basement. If it is a gate valve that does not close fully, replace it with a full-port ball valve.
Upgrade opportunistically: Every time you do plumbing work near an old gate valve, replace it with a quarter-turn ball valve. Over several years of normal repairs, you can upgrade all valves in the house without a dedicated project.
Labeling: Label each shut-off valve in your home with a tag or marker indicating which fixture it controls (e.g., "kitchen sink hot," "guest toilet"). In a plumbing emergency, you do not want to spend time figuring out which valve to close. A simple labeling system takes 10 minutes and can prevent significant water damage during a crisis.
Replacement timeline: Quarter-turn ball valves last 15-25 years. Gate valves last 10-20 years but degrade functionally much sooner. Replace any valve that drips, does not close fully, or requires excessive force to operate. Combine valve replacement with new supply lines and fittings for a complete under-fixture refresh.
Frequently Asked Questions
Can I replace a valve myself or do I need a plumber?
Replacing a compression-style shut-off valve is a DIY-friendly job if you can shut off the water upstream (at the main shutoff). You need two wrenches and about 20 minutes. Sweat (soldered) valves require a torch and soldering skill. Push-fit valves are the easiest DIY option: cut the old valve off, slide the new push-fit valve onto the pipe. No tools beyond a pipe cutter.
What is the difference between a straight stop and an angle stop valve?
An angle stop changes the water direction 90 degrees (pipe comes from the wall, water exits toward the fixture). A straight stop keeps water flowing in the same direction (pipe comes through the floor, water exits upward). Under sinks, angle stops are standard. Behind toilets, either type may be used depending on whether the pipe exits the wall or floor.
Should I replace all the valves in my house at once?
A whole-house valve replacement is not necessary unless all valves are failing. The more practical approach is to replace valves opportunistically when you are already doing work at that fixture (new faucet, new toilet, new supply lines). Prioritize replacing any gate valves that are seized or do not close fully.
Replace gate valves with quarter-turn valves whenever you are doing plumbing work nearby. Combine with new supply lines for a complete under-sink or toilet refresh. See all RELIABILT plumbing supplies.
Browse RELIABILT Valves & Valve Repair
See all options with current pricing