Gauge Siphon Tubes
A
B
C
D
Also known as pigtails, these siphon tubes protect dry gauges from steam and high-temperature fluids. Add water to the tube to create a protective barrier between your gauge and process media.
Style C requires less maintenance than Styles A, B, and D because the extra bends prolong water retention.
For technical drawings and 3-D models, click on a part number.
NPT Male Connections
A
B
C
| Style | Pipe Size  | Lg. | Max. Pressure | Specifications Met | Each | |
Brass | ||||||
|---|---|---|---|---|---|---|
| A | 1/4 | 4" | 1,000 psi @ 400° F | ASTM B43 | 0000000 | 000000 |
| A | 1/4 | 4" | 240 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
| A | 1/4 | 5 5/8" | 1,000 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
| A | 1/4 | 5 5/8" | 240 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
| B | 1/4 | 6 1/2" | 1,000 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
| B | 1/4 | 6 1/2" | 240 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
| C | 1/4 | 7 1/2" | 1,000 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
| C | 1/4 | 7 1/2" | 240 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
304 Stainless Steel | ||||||
| A | 1/4 | 5 1/2" | 1,500 psi @ 700° F | ASTM A312 | 0000000 | 00000 |
| A | 1/4 | 5 1/2" | 440 psi @ 750° F | ASTM A312 | 0000000 | 00000 |
316 Stainless Steel | ||||||
| A | 1/4 | 5 1/2" | 1,500 psi @ 750° F | ASTM A312 | 0000000 | 000000 |
| A | 1/4 | 5 1/2" | 450 psi @ 750° F | ASTM A312 | 0000000 | 00000 |
| A | 1/2 | 8 7/8" | 1,500 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
| A | 1/2 | 8 7/8" | 730 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
| B | 1/4 | 6 1/2" | 1,500 psi @ 750° F | ASTM A312 | 0000000 | 000000 |
| B | 1/4 | 6 1/2" | 450 psi @ 750° F | ASTM A312 | 0000000 | 00000 |
| B | 1/2 | 7 1/2" | 1,500 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
| B | 1/2 | 7 1/2" | 730 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
| C | 1/4 | 9 1/2" | 1,500 psi @ 750° F | ASTM A312 | 0000000 | 000000 |
| C | 1/4 | 9 1/2" | 450 psi @ 750° F | ASTM A312 | 0000000 | 00000 |
| C | 1/2 | 12" | 1,500 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
| C | 1/2 | 12" | 730 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
Seamless Steel | ||||||
| A | 1/4 | 5 1/2" | 2,000 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
| A | 1/4 | 5 1/2" | 580 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
| A | 1/2 | 8 7/8" | 1,000 psi @ 700° F | ASTM A106 Grade B | 0000000 | 00000 |
| A | 1/2 | 8 7/8" | 1,700 psi @ 800° F | ASTM A106 Grade B | 0000000 | 00000 |
| B | 1/4 | 6 1/2" | 2,000 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
| B | 1/4 | 6 1/2" | 580 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
| C | 1/4 | 7 1/4" | 2,000 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
| C | 1/4 | 7 1/4" | 580 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
Welded Steel | ||||||
| A | 1/4 | 5 1/2" | 1,000 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
| A | 1/4 | 5 1/2" | 300 psi @ 400° F | ASTM A53 Grade F | 0000000 | 0000 |
| A | 1/2 | 8 7/8" | 1,000 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
| B | 1/4 | 6 1/2" | 1,000 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
| B | 1/4 | 6 1/2" | 300 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
| C | 1/4 | 7 1/4" | 1,000 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
| C | 1/4 | 7 1/4" | 300 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |