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SCH 80 Nipple vs. Male Adapter

PurpHaze

LawnSite Fanatic
Location
Visalia, CA
Didn't want to highjack a thread either with a discussion about the differences between SCH 80 nipples and male adapters for connecting valves. Here's a picture (hopefully sized appropriately) on a main line repair we did this week that clearly shows the angle configuration and TOE nipples we use. The valve originally ran with the main line but we decided to set it this way and reconnect using 2" 90s (pressure loss not a problem) because a 110v conduit to a parking lot light was placed in the same trench. This conduit was putting too much strain on the original valve location as it butted right against the valve body originally. This is a new school site (1 year old) that I didn't have inspection responsibilities for because it was total new site construction.

Four Creeks Mainline Repair WP-01.jpg
 

Dirty Water

LawnSite Fanatic
Location
Redmond, WA
I prefer side feed valves, but on larges valves like that I do use the sch 80 nipples.

Do you use nipples on 1" inlet valves?

BTW, I see you use the same waterproof gelcaps as I do, except I get black ones.
 
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PurpHaze

PurpHaze

LawnSite Fanatic
Location
Visalia, CA
JonHolland said:
I prefer side feed valves, but on larges valves like that I do use the sch 80 nipples.
We prefer the angle configuration because there actually is less friction loss going this route. We also stock various TOE nipple lengths (2x6, 2x12, 2x18) so we can cut to desired valve height depending on how deep the main line is.

Do you use nipples on 1" inlet valves?
Yes. We also use them on 3/4" valves.

BTW, I see you use the same waterproof gelcaps as I do, except I get black ones.
Those in the picture are 3M DBY (direct burial w/ yellow wire nut) connectors. We use these and DBR (red wire nut) if we have more than three wires to connect. The wires are temporarily wrapped around the valve stem so it stays in place during the backfill process. When the valve box is finally set we unwind it. I've seen wires trapped so tight under the backfill soil or edge of the box where the actuator can't be used because the wires are so tight.
 

Wet_Boots

LawnSite Fanatic
Location
metro NYC
One more trick you can do with TOE nipples<br><img src=http://img348.imageshack.us/img348/6049/eightvalvemanifold23fz.jpg>
 

Dirty Water

LawnSite Fanatic
Location
Redmond, WA
Wet_Boots said:
One more trick you can do with TOE nipples<br><img src=http://img348.imageshack.us/img348/6049/eightvalvemanifold23fz.jpg>
Boots, I do the same trick with 3/4" Dura male adapters...nest right into a 1" fitting.

And if you had made the last fitting a cross, you could have squeezed one more valve in there :D
 

Wet_Boots

LawnSite Fanatic
Location
metro NYC
I would consider the Dura ¾" crosses if I weren't using poly pipe. Rainbird is now selling manifold crosses and manifold tees (see their MAN-X fitting) that would make it even more compact.
 
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