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Maryland Metrics: Plumbing Fitting Details

R550-150  Backnut  
 
Details

SPECIFICATION

Type
Backnut, parallel thread to BS2779

Mild Steel Sizes
The following sizes are supplied in Mild Steel:
1/4

All fittings comply with the relevant BS or BSEN standard. For further assistance please call our technical helpline on (410)358-3130 or (800)638-1830 or email us at techinfo@mdmetric.com.

When ordering GALVANISED fittings add suffix 'G' to the figure number.

Following a policy of continuous development, Crane Fluid Systems reserves the right to alter specifications and dimensions shown in the e-catalog without prior notice.

Dimensional Drawing


Standard
BS EN 1042 & ISO 49 OR BS 143 & BS1256
Connection Type
BS Parallel to BS2779
Material
Malleable Iron
Fitting Type
Backnuts
Dimensions and Weights
Size Weight
(kg/100)
Pressure a
(mm)
f
(mm)
1 6.3 PN25 10 45
1.1/2 14 PN25 12 63
1.1/4 10.4 PN25 11 55
1/2 2.6 PN25 8 31
1/4 1.6 PN25 7 22
2 21 PN25 13 76
2.1/2 30.6 PN25 13 98
3 32 PN25 21 109
3/4 4 PN25 9 38
3/8 2.2 PN25 8 26


How to order: R550-xxx size (example: R550-144 1/2) or R550-xxxG size (example: R550-140G 1/2x1/4) for galvanized fittings where xxx is replaced by the figure number

Please note that not all of the fitting styles, sizes and materials are stocked in North America.
Please allow sufficient lead time for delivery, or check with us for availabilty.

Phones: (800) 638-1830 or (410) 358-3130 are available Monday-Friday 8:30 AM to 5:30 PM Eastern time.
Faxes: (800) 872-9329 or (410) 358-3142 & E-mail are available anytime.
Warehouse & showroom hours are Monday-Friday 10 AM to 5:30 PM.
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