OVERVIEW: The Model YST1 is a rugged high-pressure stainless steel Y-strainer with NPT threaded ends, designed for applications requiring corrosion resistance and elevated pressure handling. Manufactured from CF8M (316 stainless steel), the YST1 is ideal for aggressive chemical systems, high-pressure water or oil lines, and industrial process streams. It is available in ANSI Class 600 and 1500 pressure ratings and in sizes from ½″ through 2″. The forged construction delivers superior mechanical strength and crack resistance, while the compact body allows for installation in tight spaces. The 304 or 316 SS perforated screen is housed in a precision-machined cavity that provides a high open-area ratio, minimizing pressure drop. A hex head threaded cap allows quick removal for servicing, and a ¼″ NPT blow-off port is standard for inline purging. Each unit is hydrostatically tested at 1.5× design pressure, ensuring reliability in mission-critical piping.
| • Body: CF8M (316 stainless steel), forged | • Pressure classes: ANSI Class 600 (YST1-600) and 1500 (YST1-1500) |
| • Ends: NPT threaded | • Sizes: ½″ to 2″ |
| • Cover: Threaded hex head cap | • Screen: 304 or 316 SS perforated; mesh inserts available |
| • Ports: ¼″ NPT blow-off port standard | • Testing: Hydrotested at 1.5× design pressure |
| • Applications: High-pressure chemical, oil, water, process fluid lines |
Complete dimensional and material data—see Submittal Sheet.
| MODEL |
SIZE
(in)
|
ENDS | CLASS | Cv |
PRESS (STEAM)
(psi)
|
PRESS (WOG)
(psi)
|
WT
(lbs)
|
A
(in)
|
B
(in)
|
C
(in)
|
D
(in)
|
ITEM NO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| YST3 | 1/4 | SCREW CAP | 600 | 0.7 | 600 @ 489F | 1440 @ 100F | 1.50 | 2.93 | 2.37 | 2.62 | 1/4 | YST3TI025 |
| YST3 | 3/8 | SCREW CAP | 600 | 2 | 600 @ 489F | 1440 @ 100F | 1.50 | 2.93 | 2.37 | 2.62 | 1/4 | YST3TI038 |
| YST3 | 1/2 | SCREW CAP | 600 | 8 | 600 @ 489F | 1440 @ 100F | 1.50 | 2.93 | 2.37 | 2.62 | 1/4 | YST3TI050 |
| YST3 | 3/4 | SCREW CAP | 600 | 15 | 600 @ 489F | 1440 @ 100F | 2.50 | 3.68 | 2.81 | 3.37 | 3/8 | YST3TI075 |
| YST3 | 1 | SCREW CAP | 600 | 22 | 600 @ 489F | 1440 @ 100F | 5.00 | 4.56 | 3.68 | 4.75 | 3/8 | YST3TI100 |
| YST3 | 1 1/4 | SCREW CAP | 600 | 38 | 600 @ 489F | 1440 @ 100F | 5.50 | 4.93 | 4.12 | 5.25 | 3/4 | YST3TI125 |
| YST3 | 1 1/2 | SCREW CAP | 600 | 42 | 600 @ 489F | 1440 @ 100F | 9.00 | 5.56 | 4.75 | 6.00 | 3/4 | YST3TI150 |
| YST3 | 2 | SCREW CAP | 600 | 70 | 600 @ 489F | 1440 @ 100F | 13.00 | 6.93 | 6.00 | 7.25 | 1 | YST3TI200 |
| YSTB3 | 2 | BOLTED COVER | 600 | 70 | 600 @ 489F | 1440 @ 100F | 13.00 | 6.93 | 6.00 | 7.25 | 1 | YSTB3TI200 |
| YSTB3 | 2 1/2 | BOLTED COVER | 600 | 110 | 600 @ 489F | 1440 @ 100F | 46.00 | 12.00 | 10.50 | 16.00 | 1 1/4 | YSTB3TI300 |
| YSTB3 | 3 | BOLTED COVER | 600 | 160 | 600 @ 489F | 1440 @ 100F | 43.00 | 12.00 | 3 | 16.00 | 1 1/4 | YSTB3TI300 |
| YST5 | 1/2 | BOLTED COVER | 1500 | 6 | 1500 @ 603F | 3600 @ 100F | 4.50 | 3.90 | 3 | 4.25 | NA | YST5TI050 |
| YST5 | 3/4 | BOLTED COVER | 1500 | 11 | 1500 @ 603F | 3600 @ 100F | 8.00 | 4.25 | 3.75 | 5.25 | NA | YST5TI075 |
| YST5 | 1 | BOLTED COVER | 1500 | 16 | 1500 @ 603F | 3600 @ 100F | 12 | 6.00 | 5.75 | 7 | NA | YST5TI100 |
| YST5 | 1 1/4 | BOLTED COVER | 1500 | 32 | 1500 @ 603F | 3600 @ 100F | 27 | 8.37 | 5.50 | 8 | NA | YST5TI125 |
| YST5 | 1 1/2 | BLOTED COVER | 1500 | 34 | 1500 @ 603F | 3600 @ 100F | 26.50 | 8.37 | 5.50 | 8 | NA | YSTSTI150 |
| YST5 | 2 | BOLTED COVER | 1500 | 60 | 1500 @ 603F | 3600 @ 100F | 44.50 | 10.50 | 9.25 | 11 | NA | YST5TI200 |
| YST5 | 2 1/2 | BOLTED COVER | 1500 | 140 | 1500 @ 603F | 3600 @ 100F | 96.00 | C/F | C/F | C/F | NA | YST5TI250 |
| YST5 | 3 | BOLTED COVER | 1500 | 140 | 1500 @ 603F | 3600 @ 100F | 104.00 | C/F | C/F | C/F | NA | YST5TI300 |