Product Overview
The HN101 Pressure Seal Gate Valve is designed for high-pressure isolation service in ANSI pipeline systems. Compared with conventional bolted bonnet gate valves, the pressure self-seal bonnet structure is commonly used for higher pressure classes where internal pressure helps energize the bonnet sealing arrangement.
This series is suitable for oil, gas, steam, power plant, petrochemical and other compatible industrial media where full-open or full-closed operation is required. The catalog reference covers Class 900, Class 1500 and Class 2500 configurations.
HN101 can be configured with raised face, butt-welded or ring type joint end connections depending on pressure class and project specification. Material options include carbon steel, Cr-Mo alloy steel and stainless steel options.
For engineering guidance on bonnet selection for high-pressure service, read our article comparing API gate valves and pressure seal gate valves.
Key Features
- Pressure self-seal bonnet structure for high-pressure ANSI service.
- Flexible disc with guide for reliable shut-off performance.
- Solid or open loop disc options according to project requirements.
- Changeable seat design for maintenance and project-specific trim selection.
- Casting T-type stem construction.
- Handwheel operation standard; bevel gear operation available for larger sizes.
- RF, BW and RTJ end options depending on pressure class.
Sectional Structure and Materials
The numbered sectional drawing corresponds to the position numbers in the materials table. Final material selection should be confirmed according to pressure class, working temperature and medium compatibility.
| Pos. | Parts Name | Carbon Steel | 1 1/4Cr-1/2Mo | Stainless Steel |
|---|---|---|---|---|
| 1 | Body | A216-WCB | A217-WC6 | A351-CF8M |
| 2 | Bracket | A216-WCB | A217-WC6 | A351-CF8M |
| 3 | Disc | A216-WCB + HF | A217-WC6 + HF | A351-CF8M + HF |
| 4 | Stem | A182-F6a | Cr-Mo-V | A182-316 |
| 5 | Seat | A105 + HF | A182-F11 + HF | A240-316 + HF |
| 6 | Bonnet | A105 | A182-F11 | A240-316 |
| 7 | Gasket | Enhanced flexible graphite | Enhanced flexible graphite | Enhanced flexible graphite |
| 8 | Adjustment ring | Carbon steel | A276-420 | A276-316 |
| 9 | Four open loop | Carbon steel | A276-420 | A276-316 |
| 10 | Gland | Carbon steel | Stainless steel | Stainless steel |
| 11 | Bonnet bolt | A193-B7 | A193-B16 | A193-B8M |
| 12 | Bonnet nut | A194-2H | A194-7 | A194-8M |
| 13 | Packing | Graphite | Graphite | Graphite |
| 14 | Packing pressure jacket | A276-420 | A276-304 | A276-316L |
| 15 | Packing gland | A216-WCB | A217-WC6 | A351-CF8M |
| 16 | Live bolt pin | Carbon steel | A276-420 | A276-316 |
| 17 | Live bolt | Carbon steel | A193-B7 | A193-B8 |
| 18 | Live nut | Carbon steel | A194-2H | A194-8 |
| 19 | Oil cup | Brass | Brass | Brass |
| 20 | Stem nut | Aluminium bronze | Aluminium bronze | Aluminium bronze |
| 21 | Bearing gland | Carbon steel | Carbon steel | Carbon steel |
| 22 | Hand wheel | Malleable iron | Malleable iron | Malleable iron |
| 23 | Hand wheel nut | Carbon steel | Carbon steel | Carbon steel |
Note: Alternative materials may be selected according to medium, temperature and project specification.
Technical Specifications
| Product type | Pressure seal gate valve |
| Model | HN101 |
| Pressure class | Class 900, 1500, 2500 |
| Size range | NPS 2 to NPS 36 depending on pressure class |
| Bonnet structure | Pressure self-seal bonnet |
| Disc options | Flexible disc with guide; solid or open loop disc options |
| Body materials | Carbon steel, Cr-Mo alloy steel, stainless steel |
| End connections | RF, BW, RTJ depending on class and project requirement |
| Operation | Handwheel standard; bevel gear operation project-dependent |
| Design reference | API 600 / API 6D, ASME B16.34 |
| Face-to-face reference | ASME B16.10 |
| Flange reference | ASME B16.5 |
| Butt-weld end reference | ASME B16.25 |
| Test and inspection | API 598 / API 6D |
Dimensions and Performance Data
Overall dimensions drawing
End connection and handwheel detail drawing
ANSI Class 900Lb
| Item | 2 | 2 1/2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 26 | 28 | 32 | 34 | 36 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BW L1 | 216 | 254 | 305 | 356 | 508 | 660 | 787 | 914 | 991 | 1092 | 1219 | 1321 | 1549 | 1574 | 1663 | 1778 | 1854 | 2032 |
| RF L | 368 | 419 | 381 | 457 | 610 | 737 | 838 | 965 | 1029 | 1130 | 1219 | 1321 | 1549 | 1574 | 1663 | 1778 | 1854 | 2032 |
| RTJ L2 | 371 | 422 | 384 | 460 | 613 | 740 | 841 | 968 | 1038 | 1140 | 1232 | 1334 | 1568 | — | — | — | — | — |
| Open H | 448 | 448 | 495 | 580 | 830 | 955 | 1155 | 1350 | 1500 | 1790 | 2381 | 2451 | 2971 | 3352 | 3695 | 4000 | 4165 | 4597 |
| Do | 350 | 350 | 350 | 350 | 450 | 600 | 700 | 850 | 850 | 850 | 760 | 760 | 900 | 900 | 900 | 900 | 900 | 900 |
ANSI Class 1500Lb
| Item | 2 | 2 1/2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 26 | 28 | 32 | 34 | 36 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BW L1 | 216 | 254 | 305 | 406 | 559 | 711 | 864 | 991 | 1067 | 1194 | 1346 | 1473 | 1943 | 2033 | 2209 | 2286 | 2413 | 2565 |
| RF L | 368 | 419 | 470 | 546 | 705 | 832 | 991 | 1130 | 1257 | 1384 | 1537 | 1664 | 1943 | 2033 | 2209 | 2286 | 2413 | 2565 |
| RTJ L2 | 371 | 422 | 473 | 549 | 711 | 841 | 1000 | 1146 | 1276 | 1407 | 1559 | 1686 | 1972 | — | — | — | — | — |
| Open H | 448 | 448 | 550 | 640 | 850 | 980 | 1180 | 1580 | 1790 | 1980 | 2209 | 2387 | 2794 | 3098 | 3403 | 3746 | 3048 | 3251 |
| Do | 350 | 350 | 350 | 450 | 600 | 700 | 850 | 850 | 850 | 850 | 860 | 860 | 860 | 1020 | 1020 | 1020 | — | — |
Note: The source catalog lists Open H values of 3048 and 3251 for NPS 34 and NPS 36 in Class 1500. Keep these values as source data unless later corrected by an approved drawing.
ANSI Class 2500Lb
| Item | 2 | 2 1/2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 26 | 28 | 32 | 34 | 36 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BW L1 | 270 | 330 | 368 | 457 | 610 | 762 | 914 | 1041 | 1118 | 1245 | 1397 | 1397 | 1625 | 1778 | 1905 | 2032 | 2184 | 2413 |
| RF L | 451 | 508 | 578 | 673 | 914 | 1022 | 1270 | 1422 | — | — | — | — | — | — | — | — | — | — |
| RTJ L2 | 454 | 514 | 584 | 683 | 927 | 1038 | 1292 | 1445 | — | — | — | — | — | — | — | — | — | — |
| Open H | 570 | 570 | 650 | 760 | 930 | 1050 | 1140 | 1530 | 1379 | 1481 | 1651 | 1811 | 1905 | 2032 | 2108 | 2362 | 2463 | 3063 |
| Do | 350 | 350 | 450 | 600 | 700 | 850 | 850 | 850 | 1020 | 1020 | 1020 | 1020 | — | — | — | — | — | — |
Applications
- High-pressure steam and power plant isolation service
- Oil and gas high-pressure pipelines
- Petrochemical and refinery process lines
- ANSI high-pressure water, steam, oil and compatible gas service
- Pipeline systems requiring pressure seal bonnet gate valves
Standards and Compliance
- Design reference: API 600 / API 6D
- Pressure-temperature reference: ASME B16.34
- Face-to-face / end-to-end reference: ASME B16.10
- Flange reference: ASME B16.5
- Butt-weld end reference: ASME B16.25
- Test and inspection reference: API 598 / API 6D
Note: Technical data is based on catalog reference information. Final dimensions, material grades and end connections should be confirmed according to project specification and approved drawings.
Frequently Asked Questions
What is the main difference between HN101 and HN100?
HN101 uses a pressure self-seal bonnet structure for high-pressure service, while HN100 is a standard API cast steel gate valve with a conventional bonnet arrangement.
Which pressure classes are available?
The catalog reference covers Class 900, Class 1500 and Class 2500. The available size range depends on the selected pressure class and end connection.
Can HN101 be supplied with RF, BW or RTJ ends?
Yes. Raised face, butt-welded and RTJ end configurations may be selected according to pressure class, piping design and project specification.
Related Technical Guides
For power plant isolation service, review this pressure seal valve selection guide for power plant piping.
For technical comparison resources, see our API gate valve vs pressure seal gate valve comparison and API valve types guide.
Request Pricing and Technical Data
For current pricing, lead time or technical documentation for the Pressure Seal Gate Valve HN101, contact Honiks Valve using the form below or send your inquiry directly by email.
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