Installation of Push-In BSP Fittings & PP Tank Connection Sets

Installing Push-In BSP Fittings

If you want to install additional or alternative connections at points on our water tanks that are difficult or impossible to access through the existing lid opening, we offer a convenient and flexible solution with our new PP Push-In BSP Fittings. These Push-In BSP Fittings can be installed completely from the outside at any flat spot (no counter support required from the inside).

All you need to do is drill a hole in the tank at the desired location and hand-tighten the nut of the Push-In BSP Fitting from the outside. The rubber gasket closes the hole, holds the Push-In BSP Fitting in place and seals the hole on the inside of the tank. Please refer to our Push-In BSP Fitting Size chart to determine the diameter (size of the hole to be drilled) required for the installation of each Push-In BSP Fitting.

If you want to store liquids other than water, use the our Push-In BSP Fittings with NBR gasket (dieselresistant) or FPM gasket (chemicalresistant).

Use the installation guide or watch the installation video. Here you can see an example of how easy it is to install a Push-In BSP Fitting on the water tank.



Quick overview - hole sizes

Size Male thread in inches Size female thread in inches = flow through the fitting Diameter / hole size for drilling in mm
1/2 3/8 29
3/4 1/2 35
1 3/4 43
1 1/4 1 52
1 1/2 1 1/4 59
2 1 1/2 70

Push-In BSP Fittings - before installation - dimensions & hole size (E)

before installation

Thread G1 x G2 (inch) Male thread G1 (inch) Female thread G2 (inch) E (mm) E1 (mm) K (mm) H (mm) D (mm) L2 (mm)
1/2" x 3/8" 1/2" 3/8" 29 37 28 49 13 5
3/4" x 1/2" 3/4" 1/2" 35 43 32 52 18 4
1" x 3/4" 1" 3/4" 43 53 41 56 24 7
1 1/4" x 1" 1 1/4" 1" 52 62 50 65 29,5 6
1 1/2" x 1 1/4" 1 1/2" 1 1/4" 59 68 57 75 34,5 16
2" x 1 1/2" 2" 1 1/2" 70 80 70 91 45,5 31

Usable thread length - depending on wall thickness

fully installed

Tank wall / wall thickness S (mm) Usable thread length L1 (mm) Overhang L (mm))
1/2" 3/4" 1" 1 1/4" 1 1/2" 2" 1/2" 3/4" 1" 1 1/4" 1 1/2" 2"
1 x x x x x x x x x x x x
2 19 22 27 x x x 38 41 45 x x x
3 18 21 26 x x x 37 40 44 x x x
4 17 20 25 29 39 54 36 39 43 49 59 75
5 16 19 24 28 38 53 35 38 42 48 58 74
6 15 18 23 27 37 52 34 37 41 47 57 73
7 14 17 22 26 36 51 33 36 40 46 56 72
8 13 16 21 25 35 50 32 35 39 45 55 71
9 x 15 20 24 34 49 x 34 38 44 54 70
10 x x 19 23 33 48 x x 37 43 53 69
11 x x x 22 32 47 x x x 42 52 68
12 x x x 21 31 46 x x x 41 51 67
13 x x x x x x x x x x x x

Push-In BSP Fittings example views - after installation

Outside

Inside

Cross section

Perfect sealing


Push-In BSP Fittings - can also be installed on round tank walls

Male thread G1 (inch) 1/2" 3/4" 1" 1 1/4" 1 1/2" 2"
Minimum Diameter ØT (mm) 300 400 500 700 900 1200

Tanks must not be under pressure!


Push-In BSP Fittings - min. & max. wall thickness

Wall thickness S 1/2" 3/4" 1" 1 1/4" 1 1/2" 2"
S min (mm) 2 2 2 4 4 4
S max (mm) 8 9 10 12 12 12

All Push-In Fittings - regardless of size - can be installed on our water tanks & plastic tanks!

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