direction of flow and orifice??

Use a symetrical one?

There should be an arrow showing the direction of flow.

make sure the upstream pressure is higher? put a check valve in. Span a DP transmitter to be -100 to +100 inches H2O.

A RO has no flow preference. A custody transfer meter does require the bevel downstream.

man your answer is not clear plz. make it clear or leave it if u dont know

Don't be rude to people who are trying to help you!
Else no one will try to help at all.

Indeed that was very rude. Please moderate your tone to the people who are trying to help. Maybe you are trying to inflame people and if that is so, then make yourself scarce Sir.

Hello irshy84:

hey man don't talk to me if you got nuffin 2 say you no?

It is extreme bad manners to insult people as you did when you asked for help.

Read the first line of this post. See how I use lower-case instead of an upper-case 'Capital' to start. Not nice to read is it.............

Now you know how others, who may have taken hours trying to find things for you feel!!!! ...................And I know it is NOT what you have written! I just wanted you to get 'some of that attitude (man)', of your insulting post.

I am not chasing you away, that is not for me to say or do. But, give what you write a little thought.

Remember, we are not mind readers. A clearly stated question will get many more successful answers .........

Courtesy costs nothing. Please remember that.

And to finish........You are not on 'the streets' now, you is deelin wiv edumucatedd geasers, init!

Take care.

Hello irshy84:

If you are asking which was round the Restriction Orifice goes?

The answer is the Restriction Orifice can be fitted either way if it if just a flat plate type restriction, just making the ID bore smaller, then it can be fitted either way.

Can you tell me are you fitting this in an Engine or a Hot or cold water pipe in your house?

Get back to me please.

If there is a bevel on one side of the orifice, that side goes downstream. If there isn't, then it doesn't matter which way round the plate goes.

Exactly. The sharp edge of the orifice goes on the upstream side.

When an orifice is used as an RO, it doesn't matter which way the bevel is. The bevel goes downstream if the orifice is used for measurement purposes.

Hi, irshy84!

If the valve is operating properly, or if you can see it's doing its job correctly, the orifice and direction are correct.

Put the valve on a test line first to observe it. If it is OK, nothing will change when you install it on your working equipment, so long as you connect it correctly.

Mark

Hello Mark,

some sensible advice there! Always pays to do the 'messy stuff' on a bench, and not at the top of a ladder!

Take care....................