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Message
IMHO, the standard to beat is McMaster-Carr's 4708K58, a bronze
swing-check valve for a 2" pipe rated for 406degF and up to 200PSI. It costs
$58.55, and unless somebody points out some problem, will probably be the way I
go. It has NPT threads but that should be easy enough to adapt to standard
radiator clamps by simply installing the appropriate adapters on each
side.
I was just looking at the 1-1/4" valve
below. I believe the native hose size of the EWP is 1-1/4", so that
seems like a logical size to me. See Jim, I've been looking
:-)
Rusty (got bigger cooling questions at the
moment)
| Bronze Spring-Loaded Ball-Cone Check
Valves |
• Maximum Pressure: 400 psi (Steam: 125
psi)
• Cracking Pressure: 0.5 psi
• Maximum
Temperature: 350° F |
Spring-loaded ball cone provides
fast seating action. The ball cone is made of reinforced Teflon and
is center-guided. Internal opening is full pipe size, offering
minimal flow resistance. Body and seat are bronze; spring is Type
316 stainless steel.
Connections: NPT
female x NPT female or NPT male
(inlet) x NPT female (outlet).
| |
 |
| Male x Female
| |
| Pipe |
O'all |
Cv |
Female x Female |
Male x Female |
| Size |
Lg. |
Factor |
Each |
Each |
|
| 1/4" |
2 1/16" |
3 |
|
|
| 3/8" |
2 1/8" |
5 |
|
|
| 1/2" |
2 5/16" |
6 |
|
|
| 3/4" |
2 7/8" |
12 |
|
|
| 1" |
3 1/2" |
25 |
|
|
| 1 1/4" |
4 3/16" |
44 |
|
|
| 1 1/2" |
4 15/16" |
65 |
|
|
| 2" |
6" |
120 |
|
|
| 2 1/2" |
7" |
175 |
|
|
| 3" |
8 1/8" |
265 |
|
| |
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