BFM fitting Calculator V1 User manual
|GUIDELINE
BFM®Installation Calculator V1 - User Guide
PAGE 1 OF 2GUIDELINES IG CALCULATOR USER GUIDE
01.
Select the ‘Installation Type’.
(You can adjust the ‘Units’ at any
time during the calculation.)
Enter the Connector
Diameter
02.
The calculated Installation Gap
(IG) and Minimum Space needed
to install will display here.
(The IG provided is the recommended
measurement (gap) needed to be left
between the two Spigots when welding
them to the pipes.)
05.
If you want to reduce the Minimum
Space needed to install, or would
like to try a longer Connector (but
have limited actual space available
to install), you can alter the Spigot
Lengths and recalculate.
(Default set at 87mm full spigot length)
06.
At any time, you can save
a completed calculation
by clicking on a ‘Save’
circle.
(You can save up to 5 dierent
calculations as shown.)
07.
Enter oset amount, or for
vibrating/oscillating, measure
total horizontal movement in both
directions from a ixed point and
enter longest measurement in
either direction (see over page)
04.
03. Enter the desired
Connector Length
01.
02.
03.
04.
05.
06.
06.
07.
The BFM®Installlation Gap Calculator allows you to calculate the correct Installation Gap and Minimum Space required to install a
speciic Connector Length.
Below is a step-by-step guide for using the IG Calculator, and over the page you’ll ind some general Calculator tips and information.
V 1 JAN 2017
(Option not visible
for Inline Static)
|GUIDELINE
For Oscillating + Oset, the measurement to enter into the ‘Movement’ box is the maximum horizontal dierence in
either direction from a ixed point on the top Spigot compared to the same point on the bottom Spigot. This includes any
initial oset (ie. you need to know the total maximum horizontal dierence in either direction vs if the two spigots were in
alignment).
V 1 JAN 2017
PAGE 2 OF 2GUIDELINES IG CALCULATOR USER GUIDE
BFM®Installation Gap Calculator V1 - User Guide (continued)
For Oset Static, the measurement to enter into the ‘Oset’ box is the horizontal dierence between a ixed point on the top
Spigot compared to the same point on the bottom Spigot.
For Vibratory or Oscillating, the measurement to enter into the ‘Movement’ box is the maximum horizontal movement in either
direction from a ixed point on the top Spigot compared to the same point on the bottom Spigot.
The best way to measure Movement is to have a vertical marker (a
stick or pole) held up at the edge of the pipe and then hold a tape
measure at right-angles to the pole so that it extends across the front
and past the edge of the moving spigot.
Then, using slow-motion on your phone/camera, video the
movement of the spigot. You must have the camera at the same
height and at a 90angle to the tape measure to get an accurate
reading.
It is best to video the movement at both start up and wind down, as
there is often a larger swing at this time than during regular operation.
We recommend watching the ‘Measuring for the Right Connector’
video on the BFM®itting website for more guidance.
Measuring Oset & Movement
HOW TO MEASURE:
Static: Maximum Oset = 20% of CL (Connector Length) up to 100mm (max)
Vibratory: Maximum Movement = 20% of CL (Connector Length) up to 100mm (max)
Oscillating: Maximum Movement = 20% of CL (Connector Length) up to 100mm (max)
and
Minimum IG (Installation Gap) is (CL25%)
MAXIMUM OFFSET
MOVEMENT:
The largest connector diameter is 1,650mm (65”), and the corresponding lengths are subject to the following:
• Any connector from 700mm (27½”) to 1,000mm (39½”) diameter can have a maximum length of 500mm (20”).
• Any connector from 1,050mm (41”) diameter to 1,650mm (65”) can have a maximum length of 200mm (8”).
NB: There are additional diameter/length restrictions that apply to dierent materials and for connectors with rings - the calculations are
provided based on our most common Seelex 040E material. Refer to the ‘Quick Ref Limitations Summary’ for more information on the
other material restrictions that apply.
DIAMETER VS LENGTH:
The top and bottom spigots can have dierent lengths. The default for both is set at the standard length of 87 mm (3½”),
but they can be cut down to 35mm (1⅜”) length minimum. For any spigot length under 50mm (2”), it is important to
ensure there is a heat sink to avoid distorting spigot when welding onto the pipe.
SPIGOT LENGTH:
To complete the calculation, ensure you have pressed ‘Enter’ on your keyboard to make
sure your last data entry has been accepted. You can then click on the ‘Save 1’ circle on
the right hand side of the Calculator screen - this will save all of the measurements for that
particular calculation. You can continue with more calculations and save up to 5 on screen
at the same time.
To save these calculations for future reference, you will need to take screen-shots (either
using a ‘clipping’ tool or the ‘print-screen’ function).
SAVING YOUR
CALCULATIONS:
90
To get an accurate
measurement, ensure
video is taken at a direct
front-on view of the
movement and at the
same height as the tape
measure.
OR
+
(TIP: it is usually easier to measure at the outside edge of the spigots)
