# Often asked: What Size Gas Pipe Is Needed To Supply 2 Gas Water Heaters?

## How many BTU can a 3/4 gas line carry?

Total piping length = 84 feet (use Table 3 @90 feet) From a to b, demand = 38,000 + 35,000 + 30,000 = 103,000 BTU/hr; use 3/4″ pipe From b to c, demand = 38,000 + 35,000 = 73,000 BTU/hr; use 1/2″ pipe or 3/4″ tubing From c to d, demand = 35,000 BTU/hr; use 1/2″ pipe or 5/8″ tubing From c to e, demand = 38,000 BTU/hr;

## What size gas line do I need?

Section 1, supplying outlets A and B, or 35 cubic feet per hour requires ½ inch pipe. Section 2, supplying outlets A, B, and C, or 94 cubic feet per hour requires 3/4 inch pipe. Section 3, supplying outlets A, B, C, and D, or 230 cubic feet per hour, requires 1 inch pipe.

## What size gas line do I need for 200 000 BTU?

In all cases, a near 200,000 BTU gas appliance will require a minimum of a ¾-inch gas supply line. In specific conditions a ½-inch gas line may be used.

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## What is the best pipe to supply gas?

CSST tubing, or corrugated stainless steel tubing, is good for installing gas appliances. These corrugated pipes can bend around corners reducing the number of joints and fittings. Easier to work with than steel pipe and weighs a lot less.

## Can a gas line be too big?

GAS PIPE SIZING You can flow only so much gas (or water) through a given pipe size, so restrictions will manifest themselves as a lack of pressure or volume. Sizing a gas line is not too difficult.

## What size gas pipe should supply a range cooker?

You need 28mm from the meter to the tee, 22mm for the boiler and 15mm for the range.

## How do you calculate BTU for a gas line?

To obtain the cubic feet per hour of gas required, divide the input of the appliances by the average Btu (kW. h) heating value per cubic foot of the gas. The average Btu per cubic foot in the Bay Area is 1,100.

## How far can you run a 1/2 gas line for grill?

If you are running the line off of your house or taping off a common area, then a less than 30 foot run and a ½” gas line will be the very minimum you will want. You may not see a degradation in your grilling flame or performance until your pool heater, firepit, and gas lamps are all running a the same time.

## What size gas line do I need for a 22kw generator?

A 3/4” line will feed alot of appliances. The secondary regulator at generator drops the pressure for appliance. It has a regulator at the tank and then goes to this 3/4″ black hose which then goes down to a yellow 3/4″ plastic pipe.

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## How many BTUs can a residential gas meter handle?

Size & Demand A gas meter rated at a maximum continuous capacity of 250 cf/h is capable of providing 250,000 Btu/h maximum. If the continuous meter capacity is greater than demand, your gas meter’s size is acceptable.

## What size gas line is needed for a fire pit?

If you have 100,000 BTU available from your gas source for your fire pit, and the fire pit is 20 feet from the gas source, you would need a 3/4″ diameter hard pipe. If the same fire pit is 100 feet from the gas source then you would need a 1″ diameter pipe.

## How far can you run flexible gas line?

The flexible connector length usually is limited to 3 feet except for gas ranges and clothes dryers. For these appliances, 6 feet generally is allowed. Splicing or joining connectors with nipples often is prohibited.

## Can I use PEX for gas line?

Yes you can, but because the terms PE and PEX have so often been used interchangeably it’s important to specify your intended use before purchasing polyethylene pipe for your project.

## Can a gas line and water line be in the same trench?

If trench is to be a joint trench (shared with other utilities) the following separations must be maintained: 24 inches between gas and electric lines. 12 inches between water and electric lines. 12 inches between communications and electric lines.