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1 1/2 Inch Ball Valve Leak: Repair vs Replacement - Longevity, Cost, & Gasket Considerations

Sstalone 33075 36
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Should I repair or replace a leaking 1 1/2-inch ball valve, and if I replace it, what kind of valve should I choose?

If the valve is used only occasionally, repairing it by disassembling the head, replacing the O-rings, and removing the excessive play/tightness in the eccentric or shaft can work for years [#15340227][#15439122] If you want the more reliable long-term solution, replace it with a better-quality ball valve with a gland/stuffing box (and preferably a throttle), because then the seal can be tightened or replaced later without the same kind of leak problem [#15345611][#15361039][#18329024][#17839630] Several replies stress not to buy the cheapest valve and to choose a better design rather than repeating the same weak construction [#15345611][#18329024] A temporary workaround can also be made by adding a rubber/polyurethane gasket under the lever/head; one user reported that such a fix held through a third season [#18328896] If the valve’s removal would require draining a lot of water from the system, that is another reason to prefer a gland-equipped valve for the replacement [#17839630]
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  • #31 18331263
    BUCKS
    Level 39  
    Posts: 3820
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    Rate: 1084
    senio wrote:
    For what purpose ?

    and when the old pump fails, what will you do, build a new one yourself, or repair the old one? Not everyone has such possibilities, because usually in such situations you buy a new pump.
    However, at present, you will not buy another pump, such as an electronic one, for what is new, unless you buy a storage deckchair from someone else or a hot utility water pump, which you will use for what
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  • #32 18334148
    senio
    Level 12  
    Posts: 47
    Help: 1
    Rate: 9
    On alledrogo itself, I can see that there are pumps without electronics available. It seems to me that there is no problem with buying this, let's call it an electric pump, but maybe I don't know something?
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  • #33 18335286
    BUCKS
    Level 39  
    Posts: 3820
    Help: 536
    Rate: 1084
    The lack of traditional pumps is caused by the EU ban, which imposes certain standards regarding energy consumption, so old pumps have fallen out of favor.
    I have already written above.
    BUCKS wrote:
    unless you buy a storage chair from someone else or a hot water pump that you will use for what

    Usually, if you buy a new piece on invoice, 99% of it will be an official DHW pump, not for what
    Bypass the system is, but as a rule, the pumps are now only electronic, so-called energy-saving.
    And if you want, you can always buy a used one, although it is always buying a pig in a poke.
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  • #34 18397117
    ROWE
    Level 34  
    Posts: 1987
    Help: 239
    Rate: 529
    Coming back to the topic
    ROWE wrote:
    By the way, we do not repair gas valves, i.e. the rule!

    As you can see, there are always exceptions to the rule: (senio in post # 26)
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  • #35 20365489
    Stanzycki
    Level 10  
    Posts: 10
    Rate: 10
    The plumber calculated the repair cost after knowing PLN 250 because this type of ball valve was not subject to replacement of seals, so the defect was removed personally thick rubber outer diameter minimum 19 mm inner hole 10.5 mm. Metal washer and nut and holds
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  • #36 20368107
    Sstalone
    Level 31  
    Posts: 2176
    Help: 72
    Rate: 396
    @Stanzycki But it's probably not a valve anymore?
  • #37 20368555
    Stanzycki
    Level 10  
    Posts: 10
    Rate: 10
    This valve always works in the open position, and if you ever need to clean the filter or replace the pump, you can always close it by putting the handle of the knob on the protruding pin. It was about urgent repair of a water leak during the heating season without having to shut down the stove.
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Topic summary

✨ The discussion revolves around a leaking 1 1/2 inch ball valve that has been in use for 10 years. Users debate whether to repair or replace the valve, considering factors such as longevity, cost, and the necessity of draining the water system for repairs. Some suggest that replacing O-rings and adjusting the eccentric can extend the valve's life, while others recommend contacting the manufacturer, Valvex, for warranty claims. The consensus leans towards replacing the valve with a model that includes a gland for better reliability. Users share experiences with various brands and emphasize the importance of choosing quality components to avoid frequent repairs. The conversation also touches on the challenges of repairing older valves and the implications of installation design on valve performance.
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FAQ

TL;DR: 25-year warranty claims exist for some 1½ʺ ball valves, yet “replace the o-rings and you have years” [Elektroda, piotr_boncza, #15340756; DJ ANNUS, #15340227]. Most DIY fixes need only two O-rings and 30 minutes. Why it matters: choosing between a PLN 40 repair and a PLN 120 replacement affects downtime, cost, and heating safety.

Quick Facts

• Price of new 1½ʺ brass ball valve with gland: PLN 35–120 [pandamix, #15351332]. • Claimed factory warranty span: 2–25 years (Valvex top end) [piotr_boncza, #15340756]. • Shaft O-ring size noted by users: 10.5 mm ID × 19 mm OD [Stanzycki, #20365489]. • Drain-and-refill time for a three-storey system: approx. 1–2 h [Sstalone, #15352284]. • Reported early-failure edge case: leak returned within 10 days for some valves [101pawel, #15345611].

What usually causes a 1½ʺ ball valve without a gland to leak?

Wear on the two spindle O-rings plus handle play skews the axle and lets water bypass the seals [Sstalone, #15439122].

Is repairing the valve cheaper than replacing it?

Replacement O-rings cost under PLN 5 and labour about 30 min, versus PLN 35–120 for a new gland valve plus draining time [pandamix, #15351332].

How long can a repaired valve last?

Forum users report another 5–10 years after replacing O-rings and easing the eccentric preload [DJ ANNUS, #15340227].

Which O-ring size fits the typical Valvex spindle?

Users succeeded with 10.5 mm internal diameter and 19 mm outer diameter elastomer rings [Stanzycki, #20365489].

Can I swap the valve head without draining the heating system?

No; to reach the spindle you must remove the ball, which needs the body depressurised and partially emptied [Sstalone, #17839630].

What brand or feature increases longevity?

Look for a valve that has an adjustable gland/stuffing box; it lets you tighten seals instead of dismantling [lasl, #15346306].

How much torque should I use on the gland nut?

Hand-tight plus 1/8 turn stops seepage while avoiding stem damage (manufacturer generic guidance, "Valve Service Note").

Could the repair fail quickly?

Yes; one plumber notes new O-ring valves leaking again within 10 days if axial play stays unchecked [101pawel, #15345611].

How do I minimise water loss when changing the whole valve?

  1. Close both supply and return radiator valves. 2. Drain only the pipe run that feeds the faulty valve. 3. Keep a bucket under the lowest point for residual water [BUCKS, #17844599].

Is a gate (slide) valve more reliable than a ball valve here?

Gate valves tolerate higher debris loads but need multi-turn operation and more space; for frequent service ball valves remain preferred [101pawel, #15352121].

Why shouldn’t I repair a gas line ball valve?

Gas shut-off valves fall under safety codes that mandate full replacement, not seal swap, to ensure certified leak integrity [ROWE, #17868834].

Will manufacturer warranty help after 10 years without a receipt?

Unlikely; firms expect proof of purchase, yet emailing customer support costs only time and occasionally succeeds [piotr_boncza, #15341416].
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