working pressure at meter

[cascas]

The fact is it should be 19mlb min but if you make the call to get them to come and change thye gov. they may refuse as petty to them. Providing no appliances are effected and all burner and working presures are achieved dont worry about it..thats just my oppinion...
Bren.

Am I right in my understanding that if working pressure if lower than the say 19mbar at meter, 18mbar at appliance, it will not affect the flow rate of gas available to the appliance? i.e 3m of 15mm pipe can supply 2.9m3/hr with a 1mbar drop. If length was longer (say WP showing a 2mbar drop) then 2.9m3/hr could still be delivered to the appliance?

 

[Brendan Rodgers]

It depends on the appliance but i dont know of one that it would affect,, AS PER VOKERA they have domestic modles that a dynamic gas presure as low as 12mlbr,, yes 12mlb is ok and wont affect its opperation..but thats only vokera, VAILLANT have told me they need 15mlb to opperate ok and 18mlb on WORCESTER..ITS DOWN TO THE MANUFACTURER...

Bren.

 

[AWheating]

Am I right in my understanding that if working pressure if lower than the say 19mbar at meter, 18mbar at appliance, it will not affect the flow rate of gas available to the appliance? i.e 3m of 15mm pipe can supply 2.9m3/hr with a 1mbar drop. If length was longer (say WP showing a 2mbar drop) then 2.9m3/hr could still be delivered to the appliance?

it depends on the type of appliance, hobs/cooker and gas fires normally rely on the correct pressures to operate correctly.

 

[gasmarc]

if the gas supply is not right you wont get the right flow rate and temperature from a combi. regardless of any manometer imho

 

[cascas]

but if calculated pipe size is ok, gas rate is not adjustable (zero govenor), OP inlet pressure is within spec, and gas rate within 10% of MI would you accept this gas rate as being close enough as acceptable

 

[Hobo128]

Sorry i was thinking standing pressure Between 19-30mb. Working Pressure 21 +or- 2mb
Call out transco for new governer.