一．Product Introduction
Q641F, Q641Y type PN16~PN63 pneumatic ball valve: pneumatic, flange connection, floating ball straight-through structure, seat sealing surface material is PTFE, reinforced PTFE plastic (Q641F), metal surfacing cobalt base (Q641Y), nominal pressure PN16~PN63, valve body material is WCB, CF8, CF8M, alloy steel ball valve.
二.Product Features
1.Pneumatic actuation enables quick opening and closing operations.
2.Flange connection ensures reliable and leak – tight piping system integration. 3. Floating ball straight – through structure allows for smooth fluid flow with low pressure drop.
4.Seat sealing surface material options include PTFE, reinforced PTFE plastic (for Q641F) and metal surfacing cobalt base (for Q641Y), providing excellent sealing performance and corrosion resistance.
5.Available with nominal pressure ranging from PN16 to PN63, suitable for various medium pressure applications.
6.Valve body material options like WCB, CF8, CF8M, and alloy steel make it adaptable to different corrosive and temperature environments.
三.Technical data
| Model number | PN | Working pressure/MPa | Applicable temperature/°C | Applicable media |
| Q641F – 16C | 16 | 1.6 | ≤180 | Water, gas, oil |
| Q641F – 25 | 25 | 2.5 | ≤180 | Water, gas, oil |
| Q641F – 40 | 40 | 4.0 | ≤180 | Water, gas, oil |
| Q641Y – 16C | 16 | 1.6 | ≤425 | Granular media of water, gas, and oil |
| Q641Y – 25 | 25 | 2.5 | ≤425 | Granular media of water, gas, and oil |
| Q641Y – 40 | 40 | 4.0 | ≤425 | Granular media of water, gas, and oil |
| Q641F – 16P | 16 | 1.6 | ≤180 | Nitric acid |
| Q641F – 25P | 25 | 2.5 | ≤180 | Nitric acid |
| Q641F – 40P | 40 | 4.0 | ≤180 | Nitric acid |
| Q641Y – 16P | 16 | 1.6 | ≤450 | Granular media of water, gas, and oil |
| Q641Y – 25P | 25 | 2.5 | ≤450 | Granular media of water, gas, and oil |
| Q641Y – 40P | 40 | 4.0 | ≤450 | Granular media of water, gas, and oil |
| Q641F – 16R | 16 | 1.6 | ≤180 | Nitric acid |
| Q641F – 25R | 25 | 2.5 | ≤180 | Nitric acid |
| Q641F – 40R | 40 | 4.0 | ≤180 | Nitric acid |
| Q641Y – 16R | 16 | 1.6 | ≤450 | Granular media of water, gas, and oil |
| Q641Y – 25R | 25 | 2.5 | ≤450 | Granular media of water, gas, and oil |
| Q641Y – 40R | 40 | 4.0 | ≤450 | Granular media of water, gas, and oil |
| Q641F – 16I | 16 | 1.6 | -29 ~ 150 | Water, steam, oil, etc. |
| Q641F – 25I | 25 | 2.5 | -29 ~ 150 | Water, steam, oil, etc. |
| Q641F – 40I | 40 | 4.0 | -29 ~ 150 | Water, steam, oil, etc. |
| Q641F – 63I | 63 | 6.3 | -29 ~ 150 | Water, steam, oil, etc. |
| Model number | Material – Valve body | Material – Valve stem | Material – Sealing surface | Material – Packing |
| Q641F – 16C | WCB | 2Cr13 | PTFE、Reinforced PTFE | PTFE |
| Q641F – 25 | WCB | 304 | PTFE、Reinforced PTFE | PTFE |
| Q641F – 40 | WCB | 316 | PTFE、Reinforced PTFE | PTFE |
| Q641Y – 16C | WCB | 1Cr18Ni9Ti | Metal surfacing cobalt base | Flexible graphite |
| Q641Y – 25 | WCB | 1Cr18Ni12Mo2Ti | Metal surfacing cobalt base | Flexible graphite |
| Q641Y – 40 | WCB | 1Cr18Ni12Mo2Ti | Metal surfacing cobalt base | Flexible graphite |
| Q641F – 16P | CF8 | 304 | PTFE、Reinforced PTFE | PTFE |
| Q641F – 25P | CF8 | 304 | PTFE、Reinforced PTFE | PTFE |
| Q641F – 40P | CF8 | 304 | PTFE、Reinforced PTFE | PTFE |
| Q641Y – 16P | CF8 | 304 | Metal surfacing cobalt base | Flexible graphite |
| Q641Y – 25P | CF8 | 304 | Metal surfacing cobalt base | Flexible graphite |
| Q641Y – 40P | CF8 | 304 | Metal surfacing cobalt base | Flexible graphite |
| Q641F – 16R | CF8M | 316 | PTFE、Reinforced PTFE | PTFE |
| Q641F – 25R | CF8M | 316 | PTFE、Reinforced PTFE | PTFE |
| Q641F – 40R | CF8M | 316 | PTFE、Reinforced PTFE | PTFE |
| Q641Y – 16R | CF8M | 316 | Metal surfacing cobalt base | Flexible graphite |
| Q641Y – 25R | CF8M | 316 | Metal surfacing cobalt base | Flexible graphite |
| Q641Y – 40R | CF8M | 316 | Metal surfacing cobalt base | Flexible graphite |
| Q641F – 16I | Alloy steel | Stainless steel | — | — |
| Q641F – 25I | Alloy steel | Stainless steel | — | — |
| Q641F – 40I | Alloy steel | Stainless steel | — | — |
| Q641F – 63I | Alloy steel | Stainless steel | — | — |
四.The main shape and connection size
| DN | L | D | H | H₁ | L₀ | Weight / kg |
| 15 | 130 | 95 | 185 | 39 | 140 | 6 |
| 20 | 130 | 105 | 189 | 43 | 140 | 7 |
| 25 | 140 | 115 | 210 | 48 | 158 | 8 |
| 32 | 165 | 135 | 265 | 58 | 211 | 12 |
| 40 | 165 | 145 | 260 | 62.5 | 211 | 14 |
| 50 | 200 | 160 | 295 | 76 | 211 | 18 |
| 65 | 220 | 180 | 340 | 86 | 268 | 26 |
| 80 | 250 | 195 | 355 | 100 | 268 | 34 |
| 100 | 280 | 215 | 430 | 131 | 408 | 61 |
| 125 | 320 | 245 | 465 | 148 | 408 | 104 |
| 150 | 360 | 280 | 580 | 173 | 543 | 158 |
| 200 | 457 | 335 | 710 | 219 | 684 | 276 |
| 250 | 533 | 405 | 790 | 260 | 684 | 425 |
| 300 | 610 | 460 | 870 | 305 | 684 | 580 |