Every question, one page.

Weigh it and subtract the tare weight stamped on the collar. The difference is the gas you received. A cylinder sold as an 11.8 kg fill should show 11.8 kg after that subtraction.

Delivering less gas than the cylinder was sold as containing. A cylinder 10% light looks identical to a full one, which is why weighing at handover is the only reliable check.

Yes. You are entitled to ask for it to be weighed before you accept it, and a supplier with nothing to hide will do it without argument. A refusal tells you what you need to know.

Only with the correct commercial regulator and a proper ventilated place for it to stand away from heat. The gas is identical; the valve, the regulator and the handling requirements are not.

No, the gas is the same. The differences are size, valve pattern, the matching regulator, and the draw rate each is designed for.

Each regulator is matched to its valve and to the demand expected of it. One that does not seat correctly will leak, and one that delivers the wrong pressure runs the burner outside its design.

OGRA notifies a maximum producer price on a monthly cycle, and international prices, the exchange rate and transport costs feed into it. That cycle is why retail rates tend to move monthly rather than daily.

Mostly transport. A district further from the filling plant carries more freight cost per cylinder. Local competition and the cost of holding stock also vary between districts.

Volume, delivery frequency, distance and credit terms genuinely differ between a household buying one cylinder and a kitchen on a standing weekly schedule. Those are real cost differences.

A busy commercial kitchen or tea stall can empty a 10 to 13 kg cylinder in three to ten days, against two weeks or more in a household. Burner hours decide it, not the size of the kitchen.

Count burners, multiply by the hours each runs to get daily burner hours, then multiply by 0.19 kg. Divide your cylinder size by that figure for days per cylinder.

If an interruption to service is unacceptable, yes. A two-cylinder manifold lets one run while the other stands ready so changeover happens without stopping the burner. A connected spare does much the same for a single-burner stall.

A 45.4 kg cylinder, manifolded if the tandoor runs all day. Tandoors draw heavily and continuously, so smaller cylinders mean frequent changeovers during service.

Outside the cooking line in a ventilated, secured cage, away from heat and direct sun. Run the supply line into the kitchen and keep the whole length visible for inspection.

Enough to cover the longest gap in your delivery schedule, plus one. A shortage week is exactly when an emergency cylinder is hardest to find.

Daily. A commercial kitchen runs many times the burner hours of a household with more connections and more people handling the equipment, so the same fault has far more opportunity to become an incident.

No. They belong outside the cooking line in a ventilated, lockable cage away from heat, with the supply line run into the kitchen and kept visible along its length.

Where the valves are and which way closes them, that the first action on smelling gas is to close the valve and touch no electrical switch, and who to call from outside the building.

About 62 burner hours, using the standard figure of 190 grams per burner hour. A household running two burners for two hours a day gets roughly 15 days from it.

A standard single burner uses roughly 190 grams of LPG per hour, which is about 7 MJ. Two burners together come to about 0.30 kg per hour.

About 46.1 MJ. That is the figure behind the consumption arithmetic, and it is why LPG gives more cooking heat per kilogram than most alternatives.

Cold slows vaporisation inside the cylinder and food takes longer to heat, so burners run longer for the same meal. The same household can see a noticeably shorter cylinder life in January.

An 11.8 kg cylinder suits most families of four cooking normally, lasting about fifteen days at four burner hours a day. A 15 kg gives longer between refills if you fry often or cook for guests.

Not inherently cheaper per kilogram. What a larger cylinder buys is fewer refills and less risk of running out mid-meal, which matters far more in a kitchen than in a home.

Only with a proper ventilated place for it to stand, away from heat, and no need to carry it regularly. It is a commercial size and it is not something to move up stairs.

Wrap a wet cloth around it for a minute. The part still holding liquid gas stays cool and dries more slowly, so the line between wet and dry marks the level. Weighing it and subtracting the tare weight is exact.

Liquid LPG absorbs heat from the cylinder wall as it vaporises, so the steel below the liquid line runs cooler than the empty section above it. Heavy use can even frost the surface.

Domestic cylinders have no built-in gauge. The wet cloth method gives a quick reading and weighing against the stamped tare weight gives an exact one.

It signals incomplete combustion, which wastes gas and deposits soot. Clean the burner ports first. If the flame stays yellow after a proper clean, have a qualified gas fitter look at the burner and regulator.

Soot from incomplete combustion, almost always caused by clogged burner ports restricting the air the gas needs. Cleaning the ports usually stops it immediately.

Turn off the gas and let it cool, lift off the cap and head, clear each port with a pin or stiff brush, wash and dry the parts fully, then refit the cap so it sits flat and square.

Match the flame to the pan base, use flat-bottomed pans, keep lids on, lower the flame once water boils, soak pulses first, and keep the burner ports clean. None of it changes what you cook.

Yes. An uncovered pot loses heat and steam continuously from the surface, so the same dish takes noticeably longer and burns more gas to reach the same point.

Only up to the width of the pan base. Flame past the edge heats the air around the pan, not the food, and once water is at a rolling boil a higher flame adds no temperature at all.

No. OGRA has confirmed that markings such as A-26 or D-26 are not used on LPG cylinders in Pakistan. The viral message describing them as expiry codes is false. Pakistani cylinders carry a next-test date, not an expiry date.

A steel LPG cylinder has an operational life of roughly 15 years, across several hydrostatic and pneumatic test cycles. It is retired when it fails a pressure test or shows damage, not when a particular date passes.

OGRA has said certified cylinders do not pose explosion risks under normal use, because they are tested at fixed intervals. The genuine risks are uncertified cylinders, damaged valves and worn hoses, not a date on the collar.

The manufacture date, manufacturer name, next test date, company name, serial number, batch number, tare weight and water capacity. The next-test date is the field commonly mistaken for an expiry date.

It is embossed into the protective collar around the valve, or into a plate on the shoulder, usually shown in kilograms. Subtracting it from the full cylinder weight tells you exactly how much gas you received.

The internal volume of the cylinder in litres. It is a construction specification used in filling and testing, and it is not the same as the weight of gas the cylinder holds.

Refuse the cylinder. Without legible stamps you cannot confirm the next-test date or check the fill weight against the tare, and the cylinder cannot be properly verified before filling.

Brush soapy water over the valve, regulator and hose while the system is pressurised. Bubbles forming mean gas is escaping. Close the valve, check the O-ring and hose, reconnect and retest.

Never. Bringing an open flame near a suspected leak is how a small escape becomes a fire. Soapy water is the only method you should use.

Every time you connect a new cylinder, because that is when the seal is disturbed. A further check every couple of months takes about two minutes.

Turn off the cylinder valve, then open doors and windows and leave. Do not operate any electrical switch on the way out, because a switch sparks whether it is going on or off.

Because the switch arcs as the contacts part, and that arc can ignite a gas and air mixture. Leave every switch exactly as it is and get out.

It sinks. LPG is heavier than air, so it pools at floor level rather than dispersing upward. That is why low ventilation matters and why cylinders must never be kept in a basement.

No. LPG is heavier than air, so any leak sinks and collects in the lowest space with no way to clear. A basement is the worst possible place for a cylinder.

At least 1.5 metres from any heat source, standing upright and out of direct sunlight. Heat raises the pressure inside the cylinder.

No. The valve is designed to draw vapour from the top. On its side, a cylinder can feed liquid LPG into the regulator and hose, which are not built to carry it.

Before the expiry date printed on it, and immediately if you see cracks, hardening, swelling or abrasion. Rubber degrades with kitchen heat, so a hose that looks intact can still be brittle.

Along a visible path, not hidden behind a unit or under a counter. You cannot inspect what you cannot see, and cracking usually starts near the ends.

Yes. With the regulator closed, a hose failure happens against a closed valve rather than a live cylinder. It takes a second and it is the cheapest safety habit there is.

No. Always upright. On its side a cylinder can push liquid LPG into the valve and, if connected, into a regulator and hose that are not built to carry liquid.

Only upright, secured so it cannot roll, and with a window open for ventilation. Never leave it in a parked car in the sun, because heat raises the pressure inside the cylinder.

Stop, get out, and open the vehicle up. Do not restart or operate anything electrical until the smell has cleared completely.

Sargodha city and the surrounding areas, including Satellite Town, Sillanwali Road, Katchery Bazaar, University Road, Jhal Chakian, Farooq Colony, Old Civil Lines, Shaheen Chowk, Bhalwal Road and Khushab Road. Areas beyond the list are often covered too.

By phone or WhatsApp. Give the cylinder size, whether it is domestic or commercial, and the delivery address. Most orders go out the same day.

Weigh it and subtract the stamped tare weight to confirm the fill, check the stamps are legible including the next-test date, and check the valve, collar and body for damage.

Keep one spare cylinder, know roughly how many days yours lasts, and order at about the two-thirds mark rather than when it runs out. That margin is exactly what disappears during a squeeze.

Demand rises across the province at the same time as cold weather slows vaporisation, so consumption per cylinder goes up. Higher demand and slower filling-plant turnaround arrive together.

One spare is sensible preparation. Storing cylinders in quantity in a domestic space is a genuine hazard, because the more gas in one place, the more a single leak can do.