1. Ներածություն
Effective fluid control depends on selecting the right valve for the job. Հետեւաբար, engineers rely on valve size comparison tables to translate between different standards, compare dimensional data, and verify compatibility.
Այս բաժնում, we clarify the article’s scope, underscore why accurate valve sizing matters, and define what a valve size comparison table is—and why it proves so useful in daily practice.
- Purpose and scope: We aim to equip process, մեխանիկական, and piping engineers with a comprehensive guide to creating and using valve size comparison tables.
- Importance of accurate sizing: Mis-sized valves can cause up to a 15% drop in process efficiency, lead to premature wear, or even provoke system failures. Ի հակադրություն, correctly sized valves optimize flow, նվազեցնել էներգիայի սպառումը, and extend equipment life.
- Overview of comparison tables: Նրա հիմքում, a valve size comparison table aligns Nominal Pipe Size (NPS) or Diameter Nominal (DN) designations with actual bore diameters, face-to-face dimensions, flange details, and related parameters.
Դրանով, it enables quick cross-referencing across ANSI, Դեպի, Նա, Iso, and other standards.
2. Fundamentals of Valve Sizing
Before designing or interpreting a comparison table, one must grasp basic sizing concepts.
Ներքեվ, we contrast nominal versus actual sizes, identify critical dimensional parameters, and explain how these factors influence flow and performance.
Nominal Pipe Size (NPS) vs. Actual Bore (ID)
- NPS denotes a standardized label (Է.Գ., NPS 4), but it does ոչ equal the internal diameter.
- Actual Bore (ID) varies by manufacturer and standard: Օրինակ, NPS 4 typically has an ID of 4.026 մեջ (102.3 մմ) in ANSI valves but may differ under DIN or JIS specifications.
Key Dimensional Parameters
- Դեմ առ դեմ (F2F): Distance between valve ends—critical for pipeline layout.
- End-to-End (E2E): Similar to F2F but sometimes used for wafer or lug-type valves.
- Flange Dimensions: Արտաքին տրամագիծը (OD), bolt-circle diameter (BCD), bolt hole count and size.
Impact on Flow and Performance
Valve sizing heavily influences pressure drop (ΔP) and flow coefficient (Cv).
Օրինակ, upsizing a valve by one NPS can increase Cv by roughly 20–25%, thereby reducing energy losses in high-flow applications.
3. International and Industry Standards
Global operations demand seamless interoperability. Այսպիսով, engineers must navigate multiple standard bodies:
| Ստանդարտ մարմին | Key Documents | Ճնշման դասեր |
|---|---|---|
| ANSI/ASME (Ամերիկա) | B16.10, B16.5 | 150#, 300#, 600#, եւ այլն. |
| ՔՈ ՄԵԿԸ (Եվրոպան) | Մեջ 558, PN classes | PN 6, PN 10, PN 16, PN 40 |
| Նա (Ապոնիա) | B2239 (F2F), B2002 (եզրեր) | 5Ք, 10Ք, 16Ք, 20Ք |
| Iso (Համաշխարհային) | 5752, 7005 | Սերիա 1, Սերիա 2 |
4. Gate Valve Size Comparison Table
Standards Referenced: ASME B16.10, ASME B16.5 (Դասավորել 150), Մեջ 558, Մեջ 1092-1 (PN16)
Փականի տեսակը: Ֆլանգավոր, Full-Port Gate Valve
Material Assumed: Ածխածնի պողպատ (Wcb), Rising Stem Design
| NPS (մեջ) | DN (մմ) | Actual Bore (ID, մմ) | Դեմ առ դեմ (մմ) | Flange OD (մմ) | Bolt Circle Ø (մմ) | Ոչ. of Bolts | Bolt Hole Ø (մմ) |
|---|---|---|---|---|---|---|---|
| 2 | 50 | 51 | 178 | 152 | 120.5 | 4 | 19 |
| 2½ | 65 | 64 | 190 | 178 | 139.7 | 4 | 19 |
| 3 | 80 | 76 | 203 | 190 | 152.4 | 4 | 19 |
| 4 | 100 | 102 | 229 | 229 | 190.5 | 8 | 19 |
| 5 | 125 | 127 | 254 | 254 | 216 | 8 | 22 |
| 6 | 150 | 152 | 267 | 279 | 241.3 | 8 | 22 |
| 8 | 200 | 203 | 292 | 343 | 298.5 | 8 | 22 |
| 10 | 250 | 254 | 330 | 406 | 362 | 12 | 25 |
| 12 | 300 | 305 | 356 | 483 | 431.8 | 12 | 25 |
| 14 | 350 | 337 | 381 | 533 | 476.3 | 12 | 29 |
| 16 | 400 | 387 | 406 | 597 | 539.8 | 16 | 29 |
| 18 | 450 | 438 | 432 | 635 | 577.9 | 16 | 32 |
| 20 | 500 | 489 | 457 | 699 | 635 | 20 | 32 |
| 24 | 600 | 591 | 508 | 813 | 749.3 | 20 | 35 |
Նշումներ:
- Actual Bore (ID) may vary slightly depending on manufacturer and trim style; values are typical for full-port design.
- Դեմ առ դեմ values follow ASME B16.10 or EN 558 Սերիա 1.
- Flange OD, Պտուտակային շրջան, մի քանազոր Bolt Dimensions follow ASME B16.5 Class 150 / Մեջ 1092-1 PN16 as applicable.
- All dimensions are in միլիմետր unless otherwise noted.
- Custom valve designs or higher pressure classes (Դասավորել 300, PN25) will require different flange and body dimensions.
5. Butterfly Valve Size Comparison Table
Փականի տեսակը: Wafer-style Soft Seal Butterfly Valve
Ստանդարտներ: Մեջ 558 Սերիա 20 (Դեմ առ դեմ), Մեջ 1092-1 (Կցաշուրթ), ASME B16.5 Class 150 Եզրեր
Ճնշման գնահատական: Pn10 / PN16 / ANSI դաս 150
| DN (մմ) | NPS (մեջ) | Դեմ առ դեմ (մմ) | Flange Outer Diameter (OD, մմ) | Bolt Circle Diameter (BCD, մմ) | Number of Bolt Holes | Bolt Hole Diameter (մմ) |
|---|---|---|---|---|---|---|
| 50 | 2 | 108 | 165 | 125 | 4 | 18 |
| 65 | 2½ | 114 | 185 | 145 | 4 | 18 |
| 80 | 3 | 127 | 200 | 160 | 8 | 18 |
| 100 | 4 | 140 | 220 | 180 | 8 | 18 |
| 125 | 5 | 152 | 250 | 210 | 8 | 18 |
| 150 | 6 | 165 | 285 | 240 | 8 | 22 |
| 200 | 8 | 191 | 340 | 295 | 8 | 22 |
| 250 | 10 | 216 | 395 | 350 | 12 | 22 |
| 300 | 12 | 241 | 445 | 400 | 12 | 22 |
| 350 | 14 | 267 | 505 | 460 | 16 | 22 |
| 400 | 16 | 292 | 565 | 515 | 16 | 26 |
| 450 | 18 | 318 | 620 | 565 | 20 | 26 |
| 500 | 20 | 343 | 670 | 620 | 20 | 26 |
| 600 | 24 | 394 | 780 | 725 | 20 | 30 |
Additional Notes:
- Դեմ առ դեմ dimensions per EN 558 Սերիա 20 wafer design ensure compatibility with flanges rated PN10/PN16 or ANSI Class 150.
- Կցաշուրթի չափերը (OD, bolt circle, պտուտակների անցքեր) conform to EN 1092-1 or ASME B16.5 to ensure proper installation between pipe flanges.
- Bolt hole size and number correspond with flange class and size to maintain pressure integrity.
- Soft seal butterfly valves use elastomeric liners (Eddm, NBR, Վիտոն) and are preferred for water, Hvac, and light chemical services.
6. Flange Type Soft Seal Butterfly Valve Size Comparison Table
Փականի տեսակը: Flanged Soft Seal Butterfly Valve
Ստանդարտներ: Մեջ 558 Սերիա 20 (Դեմ առ դեմ), Մեջ 1092-1 (Flanges PN10/16), ASME B16.5 Class 150 Եզրեր
Ճնշման դաս: PN10/PN16 / ANSI դաս 150
| DN (մմ) | NPS (մեջ) | Դեմ առ դեմ (մմ) | Flange Outer Diameter (մմ) | Bolt Circle Diameter (մմ) | Number of Bolt Holes | Bolt Hole Diameter (մմ) |
|---|---|---|---|---|---|---|
| 50 | 2 | 140 | 165 | 125 | 4 | 18 |
| 65 | 2½ | 152 | 185 | 145 | 4 | 18 |
| 80 | 3 | 165 | 200 | 160 | 8 | 18 |
| 100 | 4 | 178 | 220 | 180 | 8 | 18 |
| 125 | 5 | 191 | 250 | 210 | 8 | 18 |
| 150 | 6 | 203 | 285 | 240 | 8 | 22 |
| 200 | 8 | 229 | 340 | 295 | 8 | 22 |
| 250 | 10 | 254 | 395 | 350 | 12 | 22 |
| 300 | 12 | 279 | 445 | 400 | 12 | 22 |
| 350 | 14 | 305 | 505 | 460 | 16 | 22 |
| 400 | 16 | 330 | 565 | 515 | 16 | 26 |
| 450 | 18 | 356 | 620 | 565 | 20 | 26 |
| 500 | 20 | 381 | 670 | 620 | 20 | 26 |
| 600 | 24 | 432 | 780 | 725 | 20 | 30 |
Նշումներ:
- Դեմ առ դեմ dimension corresponds to EN 558 Սերիա 20 flanged butterfly valve standard, suitable for installation between flanges rated PN10/PN16 or ANSI Class 150.
- Flange OD, Bolt Circle Diameter, Bolt Hole Qty and Size conform to EN 1092-1 and ASME B16.5 to ensure compatibility with standard pipe flanges.
- Soft seal typically uses elastomers like EPDM, NBR, ոսկե Վիտոն, providing excellent sealing for water, օդային, and light chemical applications.
- Flange butterfly valves allow easy removal/replacement without disturbing pipeline flanges.
7. Butterfly Valve Dimensions under EN Standard
Ստանդարտ: Մեջ 558 (Դեմ առ դեմ) & Մեջ 1092-1 (Կցաշուրթ)
Փականի տեսակը: Wafer/Flanged, Soft Seal
Ճնշման դաս: Pn10 / PN16
| DN (մմ) | Face-to-Face Length (մմ) | Flange Outer Diameter (մմ) | Bolt Circle Diameter (մմ) | Number of Bolt Holes | Bolt Hole Diameter (մմ) |
|---|---|---|---|---|---|
| 50 | 108 | 165 | 125 | 4 | 18 |
| 65 | 114 | 185 | 145 | 4 | 18 |
| 80 | 127 | 200 | 160 | 8 | 18 |
| 100 | 140 | 220 | 180 | 8 | 18 |
| 125 | 152 | 250 | 210 | 8 | 18 |
| 150 | 165 | 285 | 240 | 8 | 22 |
| 200 | 191 | 340 | 295 | 8 | 22 |
| 250 | 216 | 395 | 350 | 12 | 22 |
| 300 | 241 | 445 | 400 | 12 | 22 |
| 350 | 267 | 505 | 460 | 16 | 22 |
| 400 | 292 | 565 | 515 | 16 | 26 |
| 450 | 318 | 620 | 565 | 20 | 26 |
| 500 | 343 | 670 | 620 | 20 | 26 |
| 600 | 394 | 780 | 725 | 20 | 30 |
Բացատրություն:
- Face-to-Face Length: Per EN 558 Սերիա 20, applies to wafer and lug butterfly valves.
- Flange Outer Diameter, Bolt Circle Diameter, Bolt Hole Number/Size: Based on EN 1092-1 flange standards for PN10 and PN16 pressure classes.
- These dimensions ensure compatibility with corresponding pipe flanges and facilitate installation.
- Է bolt hole pattern ensures proper mechanical strength and sealing integrity.
8. Ball Valve Size Standards Table
ANSI dimensions reflect American standards; EN dimensions reflect European standards.
Standards Referenced: Based on ANSI / ASME Standards
Standards Referenced:
- ASME B16.10 – Face-to-face and end-to-end dimensions
- ASME B16.5 – Flanged connections (for pressure classes 150–2500)
- ASME B16.34 – Valve design, նյութեր, and pressure–temperature ratings
| DN (մմ) | NPS (մեջ) | Դեմ առ դեմ (մմ) ANSI/ASME B16.10 | Flange OD (մմ) ANSI B16.5 Class 150 | Bolt Circle Diameter (մմ) ANSI B16.5 | Number of Bolts | Bolt Hole Diameter (մմ) | Դեմ առ դեմ (մմ) Մեջ 558 | Flange OD (մմ) Մեջ 1092-1 PN16 | Bolt Circle Diameter (մմ) Մեջ 1092-1 | Number of Bolts EN 1092-1 | Bolt Hole Diameter (մմ) Մեջ 1092-1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 2 | 152 | 165 | 125 | 4 | 18 | 140 | 185 | 145 | 4 | 18 |
| 65 | 2½ | 165 | 190 | 145 | 4 | 18 | 152 | 200 | 160 | 8 | 18 |
| 80 | 3 | 178 | 215 | 160 | 8 | 18 | 165 | 220 | 180 | 8 | 18 |
| 100 | 4 | 190 | 254 | 180 | 8 | 18 | 178 | 250 | 210 | 8 | 18 |
| 125 | 5 | 216 | 279 | 210 | 8 | 22 | 191 | 285 | 240 | 8 | 18 |
| 150 | 6 | 241 | 324 | 241 | 8 | 22 | 216 | 320 | 295 | 8 | 22 |
| 200 | 8 | 292 | 406 | 362 | 8 | 22 | 267 | 405 | 355 | 8 | 22 |
| 250 | 10 | 330 | 483 | 432 | 12 | 25 | 292 | 460 | 410 | 12 | 22 |
| 300 | 12 | 356 | 559 | 483 | 12 | 25 | 318 | 515 | 460 | 12 | 22 |
| 350 | 14 | 394 | 597 | 539 | 16 | 29 | 343 | 565 | 515 | 16 | 22 |
| 400 | 16 | 432 | 673 | 595 | 16 | 29 | 368 | 620 | 565 | 16 | 26 |
| 450 | 18 | 483 | 698 | 622 | 20 | 32 | 394 | 675 | 615 | 20 | 26 |
| 500 | 20 | 508 | 749 | 673 | 20 | 32 | 419 | 730 | 670 | 20 | 26 |
| 600 | 24 | 584 | 864 | 787 | 20 | 35 | 483 | 840 | 780 | 20 | 30 |
Բացատրություն:
- Դեմ առ դեմ: Length between valve ends, critical for pipe fitting.
- Flange Outer Diameter (OD) մի քանազոր Bolt Circle Diameter determine flange compatibility.
- Number and size of bolts depend on flange size and pressure rating.
- Differences may require adapters or custom flanges in international projects.
9. Multi-Perspective Analysis
Ծավալային ճշգրտություն
Ամուր հանդուրժողականություն (±1% on bore, ±2 mm on face-to-face) reduce mis-alignment during installation.
Բացի այդ, accurate dimensions ensure proper gasket compression, preserving seal integrity under pressures up to 250 բար.
Նյութական համատեղելիություն
Material selection—carbon steel, չժանգոտվող պողպատ, or specialized alloys—often modifies wall thickness and overall dimensions.
Օրինակ, stainless valves may feature 5% thicker walls to allow for corrosion allowances, thereby slightly altering nominal F2F dimensions.
Ճնշում-ջերմաստիճանի գնահատականներ
Valve body ratings must align with flange ratings.
Որպես օրինակ, an ANSI 300# փական (առավելագույն աշխատանքային ճնշում 74 bar at 100 ° C) pairs with 300# flanges featuring larger bolt circles (216 mm vs. 184 mm for 150#), necessitating a separate table column for pressure class.
Application-Specific Considerations
- Petrochemical vs. water treatment vs. Hvac: Aggressive media in petrochemical plants often require special alloys and tighter tolerances; ի հակադրություն, HVAC valves may follow looser ANSI 150# specs.
- Սանիտարական (եռակի սեղմիչ) vs. industrial flanges: Tri-clamp fittings use butt-welded or clamp end connections and typically depart from ANSI/DIN bolt patterns entirely,
warranting a specialized mini-table.
Cost and Supply-Chain Implications
Standard valves (90% of market demand) enjoy shorter lead times (2- 4 շաբաթ) and lower unit cost.
Սակայն, custom sizes or special materials can stretch lead times to 12–16 weeks and increase cost by 30–50%.
Հետեւաբար, stocking popular sizes (Է.Գ., NPS 2, 4, 6) reduces downtime risk and lowers inventory carrying costs.
10. Եզրափակում
Accurately sizing valves and translating between standards plays a pivotal role in safeguarding plant reliability, optimizing performance, and controlling costs.
By constructing a well-organized valve size comparison table—complete with essential dimensions, ճնշման դասեր, and material notes,
Engineering teams can streamline design reviews, accelerate procurement, and minimize installation errors.
Ի վերջո, investing time in building and maintaining these tables yields dividends in reduced downtime, enhanced safety, and improved operational efficiency.
Different valve manufacturers may have slight variations based on standard dimensions.
When selecting valves in practice, it is essential to consider the specific project requirements, pipeline system parameters, and the product specifications provided by the manufacturer to ensure accurate selection and proper installation.
Սա Ձեր արտադրության կարիքների համար կատարյալ ընտրություն է, եթե ձեզ հարկավոր է որակյալ փականի բաղադրիչներ.
