Drip kit or system
DIG D54 filter and regulator: 150 mesh, 25 psi, 3/4 in MNPT
DIG's D54 has a 150 mesh stainless screen, a 25 PSI preset, up to 6 GPM and 3/4 in MNPT ends. DIG warns it must not sit under constant static pressure.
Also listed as D54, DIG D54
Short answer
The D54 is DIG's combined filter and preset regulator: a 150 mesh stainless steel screen, 25 PSI outlet, up to 6 GPM, 3/4 in MNPT inlet and outlet, and operating pressure up to 120 PSI. DIG warns twice that the unit must not be left under constant static pressure. See drip pressure regulators.
Key facts
- What it is
- Combined screen filter and preset pressure regulator for a drip head[1]
- Tubing
- Not confirmedThe D54 has pipe-thread ends; it takes no tubing directly.
- Fitting type
- Threaded inline unit[1]
- Threads
- 3/4 in MNPT inlet and outlet[1]
- Emitters or outlets
- Not confirmedA filter-regulator has no emitters.
- Pressure range
- Operating pressure up to 120 PSI[1]
- Filtration
- 150 mesh stainless steel screen[1][2]Clemson HGIC defines 150 mesh as 150 openings over one inch of screen.
- Pressure regulation
- Preset to 25 PSI; flow up to 6 GPM[1]
- Maker cautions
- DIG says to make sure the unit will not be under constant static pressure, and repeats the warning on its page[1]
- Parts the maker lists for it
- Not confirmedThe D54 page we read names no replacement screen or companion parts.
- Maker-page conflicts
- The opening size for 150 mesh differs by source: a USU table (from NRCS) lists 0.100 mm, while UF/IFAS lists 105 microns (0.105 mm)[3][4]Neither source describes the D54 screen itself.
- Not confirmed
- Not confirmedDIG gives no minimum flow and no replacement screen part number on the D54 page.
Watch out for
- DIG says the D54 must not be left under constant static pressure.
- A standard regulator is not a no-flow limiter: Senninger explains that with a closed downstream shut-off, inlet pressure can equalize across it.
- Both ends are 3/4 in MNPT, which is pipe thread, not hose thread. Raindrip says to match hose thread to hose thread and pipe thread to pipe thread.
- A higher mesh number means smaller openings; 150 mesh is coarser than 200 mesh.
Questions
What does DIG mean by 'not under constant static pressure'?
Static pressure is pressure with no water flowing. DIG warns the D54 must not sit under it constantly, and Senninger explains that a standard regulator does not hold pressure down once flow stops.[1][5]
What does 150 mesh mean?
Clemson HGIC defines 150 mesh as 150 openings counted over one inch of screen. A USU table lists 150 mesh at 0.100 mm and 200 mesh at 0.074 mm. See 150 vs 200 mesh.[2][3]
What threads does the D54 have?
DIG lists 3/4 in MNPT on both the inlet and outlet. See FHT vs MHT vs FPT vs MPT.[1]