ULTIMHEAT : Paddle flow switches, micro-switch contact; 3/4” BSPP union nut. Type R1B

Paddle flow switches, micro-switch contact, 3/4” BSPP union nut Type: R1B
Size and pressure Flow sensing:
Cleavable paddle
¾” BSPP Union nut
Electrical rating Mounting position Type
PN10 R1B

Type A Standard cleavable paddle
1: Paddle 2: Body 3: Cable

Type B Paddle for DN15 tee
1: Paddle 2: Body 3: Cable
Main uses: Water flow detection on water pipes
Functional principle: Balanced paddle, perpendicular to the main flow, actuating a micro- switch. Flexible elastomeric gasket between paddle and electric switch
Main housing material: PPO, fiber glass reinforced, usable with potable water.
Paddle material: Polypropylene, resistant to ozone and water disinfection products
Paddle gasket: Santoprene, resistant to ozone and water disinfection products
Electrical rating: 5A resistive, 230V AC
Electric contact type: SPDT, open or close by flow rise
Liquids compatibility: For use with clean water and liquids without chemical incompatibility with PPO and Santoprene
Nominal pressure at 20°C: 1MPa (PN10)

Assembly on pipes with ¾” union nut

Assembly on pipes with snap-in fitting

Average Flow detection values vs pipe I.D. and paddle length (Liters/min)
Paddle length Pipe ID (mm)***
15*** 20 25 32 40 50 63
*Close **Open *Close **Open *Close **Open *Close **Open *Close **Open *Close **Open *Close **Open
1 8.3 7,2 16,3 11,6 37 36 77 68 157 128 260 202 598 412
1+2         24 18 53 50 108 97 183 160 421 327
1+2+3             43 38 88 82 168 140 386 286
1+2+3+4                 70 68 130 118 299 241
1~5                 52 50 110 98 253 200
1~6                     90 88 217 170
1~7                     78 77 178 158
1~8                         150 135
1~9                         135 122
* Close by flow rise (L/min) of contact open at no flow position ** Open by flow decrease (L/min) of contact open at no flow position. Average values for indication only.
Standard tolerances ±30% *** With3/4 DN15 brass tee (see accesories) and type B non cleavable paddle

Nominal diameter: Can be used on 20 to 63 mm internal diameter pipes
The paddle is cleavable and can be cut at various lengths upon pipe diameter. There are cutting lines numbered 1 to 9 every 5mm.
Recommended mounting position: Vertical, with paddle downside. Other positions are possible with a change in the calibration value related to the paddle weight.
Water pipe connection: Supplied with a fiber glass reinforced PA66G3/4”(BSPP) union nut and NBR gasket. Must be used on a BSPP3/4 male fitting perpendicular to the main
Recommended torque: 7Nm.
Version for snap-in mounting (see accessories) has no nut
Liquids temperature range: 5 to 80°C
Ambient temperature range: 5 to 50°C
Ingress protection: IP65
Electrical connection: 3 x 0.75 mm² cable, PVC insulation, T80°, style H05VVF.
Installation instructions:
- Check carefully the paddle orientation: The arrow on housing must be exactly parallel to the pipe
- A 5 mm minimum gap must be respected between end of the paddle and tube wall opposite to the 3/4” fitting.
- We recommend the use of nozzles of length less than or equal to 18mm between the gasket seat and the inside of the tube and with an inner diameter greater than or equal to 14mm, to avoid blocking of the paddle.
Accessories: 3/4” PVC saddles forDN40 to DN100 (OD) PVC pipes, and other fittings: see last section of this catalogue
- Cable with connector or terminals, other cable length, nickel plated brass nut.

Main references
  Cable length
500mm 1m 2m
Type A cleavable paddle, 3/4" nut R1BH05073M33N050 R1BH05073M33N100 R1BH05073M33N200
Type A cleavable paddle, snap-in mounting R1BH05073S13N050 R1BH05073S13N100 R1BH05073S13N200
Type B non-cleavable paddle for DN15 x ¾ Tee, 3/4" nut R1BH01235M33N050 R1BH01235M33N100 R1BH01235M33N200

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