Waveguide Pressure Windows
A waveguide pressure window forms a dielectric barrier across the RF path to separate pressure or environmental conditions on its two sides. Select the operating band, WR size, pressure differential, power and mating flanges together. The published model matrix lists up to 45 PSIG; the separate 70 psi overview statement must not be applied to every model.
Seal the waveguide and keep the RF path continuous
A waveguide pressure window separates two environments while transmitting RF through a dielectric barrier. Pressure capability belongs to the complete window, flange, seal and fastener assembly. Specify the pressure on each side, its direction and any vacuum condition; the RF band and permitted heating must be checked for that same configuration.
The data used to match your waveguide line
Send the conditions that change the build
Provide the operating and maximum differential pressure, gas or vacuum condition, temperature range, CW/peak power, pulse duty, WR size and both flange drawings. State the required leakage limit and test method separately from the pressure rating.
Waveguide Pressure Windows
Use the selected model row for preliminary selection, then confirm the window material, allowable differential pressure, RF power and flange pair on one approved specification. A family maximum in one column cannot be combined with another model’s frequency or power rating.
| MODEL | FREQ. RANGE (GHz) | WG SIZE | VSWR Max. | PRESSURE (PSIG) | AVG POWER (W) | WINDOW MATERIAL | FLANGE TYPE | MATERAL | FINISH | DATASHEET | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| COVER | GROOVED | STEP | ||||||||||
| DH-9WAL… | 0.76-1.15 | WR975 | 1.15:1 | Up to 45 | Up to 3000 | Teflon/Fiberglass/Ceramics | UDR9 | PDR9 | Al | Chromate | STEP | |
| DH-12WAL… | 0.96-1.46 | WR770 | 1.15:1 | Up to 45 | Up to 3000 | Teflon/Fiberglass/Ceramics | UDR12 | PDR12 | Al | Chromate | STEP | |
| DH-14WAL… | 1.13-1.73 | WR650 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR14 | PDR14 | Al | Chromate | STEP | |
| DH-18WAL… | 1.45-2.2 | WR510 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR18 | PDR18 | Al | Chromate | STEP | |
| DH-22WAL… | 1.72-2.61 | WR430 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR22 | PDR22 | Al | Chromate | STEP | |
| DH-26WAL… | 2.17-3.3 | WR340 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR26 | PDR26 | Al | Chromate | STEP | |
| DH-32WAL… | 2.6-3.95 | WR284 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR32 | PDR32 | Al/Cu | Chromate | STEP | |
| DH-40WAL… | 3.22-4.9 | WR229 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR40 | PDR40 | Al/Cu | Chromate | STEP | |
| DH-48WAL… | 3.94-5.99 | WR187 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR48 | PDR348 | Al/Cu | Chromate | STEP | |
| DH-58WAL… | 4.64-7.05 | WR159 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR58 | PDR58 | Al/Cu | Chromate | STEP | |
| DH-70WAL… | 5.38-8.17 | WR137 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR70 | PDR70 | Al/Cu | Chromate | STEP | |
| DH-84WAL… | 6.57-9.99 | WR112 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR84/UBR84 | PDR84/PBR84 | Al/Cu | Chromate | STEP | |
| DH-100WAL… | 8.2-12.5 | WR90 | 1.15:1 | Up to 45 | Up to 1000 | Teflon/Fiberglass/Ceramics | UDR100/UBR100 | PDR100/PBR100 | Al/Cu | Chromate | STEP | |
| DH-120WAL… | 9.84-15 | WR75 | 1.15:1 | Up to 45 | Up to 800 | Teflon/Fiberglass/Ceramics | UBR120 | PBR120 | Al/Cu | Chromate | STEP | |
| DH-140WAL… | 11.9-18 | WR62 | 1.15:1 | Up to 45 | Up to 800 | Teflon/Fiberglass/Ceramics | UBR140 | PBR140 | Al/Cu | Chromate | STEP | |
| DH-180WAL… | 14.5-22 | WR51 | 1.15:1 | Up to 45 | Up to 800 | Teflon/Fiberglass/Ceramics | UBR180 | PBR180 | Al/Cu | Chromate | STEP | |
| DH-220WAL… | 17.6-26.7 | WR42 | 1.15:1 | Up to 45 | Up to 800 | Teflon/Fiberglass/Ceramics | UBR220 | PBR220 | Al/Cu | Chromate | STEP | |
| DH-260WAL… | 21.7-33 | WR34 | 1.15:1 | Up to 45 | Up to 500 | Teflon/Fiberglass/Ceramics | UBR260 | PBR260 | Al/Cu | Chromate | STEP | |
| DH-320WAL… | 26.3-40 | WR28 | 1.15:1 | Up to 45 | Up to 500 | Teflon/Fiberglass/Ceramics | UBR320 | PBR320 | Al/Cu | Chromate | STEP | |
| DH-400WAL… | 32.9-50.1 | WR22 | 1.15:1 | Up to 45 | Up to 100 | Teflon/Fiberglass/Ceramics | FUGP400/UG-383U/M | Al/Cu | Chromate | STEP | ||
| DH-500WAL… | 39.2-59.6 | WR19 | 1.15:1 | Up to 45 | Up to 100 | Teflon/Fiberglass/Ceramics | FUGP500/UG-383U/M | Al/Cu | Chromate | STEP | ||
| DH-620WAL… | 49.8-75.8 | WR15 | 1.15:1 | Up to 45 | Up to 100 | Teflon/Fiberglass/Ceramics | FUGP620/UG-385U/M | Al/Cu | Chromate | STEP | ||
| DH-740WAL… | 60.5-91.9 | WR12 | 1.15:1 | Up to 45 | Up to 100 | Teflon/Fiberglass/Ceramics | FUGP740/UG-387U/M | Al/Cu | Chromate | STEP | ||
| DH-900WAL… | 73.8-112 | WR10 | 1.15:1 | Up to 45 | Up to 100 | Teflon/Fiberglass/Ceramics | FUGP900/UG-387U/M | Al/Cu | Chromate | STEP | ||
Note: All Dolph-MW models include an surtec/corrosion protection treatment and are painted flat black. Flanges are unplated, polished and surtec. Other finishes and paint colors are available upon request.
Keep the product sheet and flange reference with the RFQ
The downloadable pressure-window sheet covers the WPW series and ordering information. The flange document gives Dolph flange designations against standard waveguide sizes.
2450 MHz, 30 PSI, 10 kW configuration
This high-power configuration is separate from the standard window matrix. Its rating does not establish that other window materials, thicknesses or flange arrangements have the same thermal or pressure capability.
From interface review to a finished waveguide part
Dolph’s manufacturing page lists CNC machining, turning, waveguide forming and bending, plating, soldering and brazing of copper/copper alloys/aluminum, plus anodising and passivation (RoHS).
Related parts and engineering references
What procurement can verify
Dolph’s About page states that the company was founded in 2001 and that its Quality Manual and Quality Procedure use ISO 9001-2015. Manufacturing information lists anodising and passivation (RoHS) among its capabilities.
If your order requires a currently valid certificate or project-specific compliance document, request the latest copy from sales before purchase approval.
Dolph Microwave warrants products against defective material and workmanship for one year from the date of delivery, subject to the warranty terms published on the site.
