Temperature Range: -40°C to +120°C (no pressure reduction)
Pressure Ratings:
Proof Pressure: 2× working pressure
Burst Pressure: 4× working pressure
Torque Guidance: Recommended torque values for lightly oiled steel threads
Description
This reducing adaptor features an NPTF male thread on one end and a BSPP male 60° cone on the other, enabling connection between different-sized American NPTF and British BSPP fittings. Manufactured by Burnett & Hillman in mild steel to BS EN 10277 standards, it offers strong sealing performance, durability, and reliability for hydraulic and pneumatic applications.
Key Features & Benefits
Material Strength: Constructed from mild steel for durability under pressure
Thread Configuration: Reducing NPTF male-to-BSPP male for size compatibility
Seal Type: 60° cone on BSPP end ensures robust, leak-free metal-to-metal sealing
Standard Compliance: Produced to BS EN 10277 for dimensional precision
Versatile Application: Suitable for mixed-size hydraulic and pneumatic connections
Temperature Performance: Reliable operation between -40°C and +120°C
Quality Manufacturing: ISO 9001-certified manufacturing for consistent product quality
Downloads
Burnett & Hillman Pressure Guide
SKU
Product Code
T1 (")
T2 (")
B1 (")
B2 (")
L1 (")
L2 (")
O/L (")
A/F (mm)
379168
1NB0204
1/8
1/4
0.185
-
0.38
0.45
1.07
19
379169
1NB0206
1/8
3/8
0.188
0.31
0.38
0.52
1.18
22
379170
1NB0208
1/8
1/2
0.188
0.44
0.38
0.60
1.29
27
379171
1NB0402
1/4
1/8
0.25
0.14
0.56
0.44
1.30
14
379173
1NB0406
1/4
3/8
0.25
0.31
0.56
0.52
1.33
22
379174
1NB0408
1/4
1/2
0.25
0.44
0.56
0.60
1.47
27
379175
1NB0412
1/4
3/4
0.25
0.72
0.56
0.75
1.62
32
379176
1NB0602
3/8
1/8
0.38
0.19
0.56
0.44
1.30
0.687"
379177
1NB0604
3/8
1/4
0.38
0.19
0.56
0.45
1.31
19
379179
1NB0608
3/8
1/2
0.38
0.44
0.56
0.60
1.46
27
379180
1NB0610
3/8
5/8
0.38
0.59
0.56
0.70
1.58
30
379181
1NB0612
3/8
3/4
0.38
0.66
0.56
0.75
1.62
32
379182
1NB0802
1/2
1/8
0.50
0.16
0.75
0.44
1.49
22
379183
1NB0804
1/2
1/4
0.50
0.19
0.75
0.45
1.50
22
379184
1NB0806
1/2
3/8
0.50
0.31
0.75
0.52
1.61
22
379186
1NB0810
1/2
5/8
0.5
0.562
0.75
0.7
1.76
30
379187
1NB0812
1/2
3/4
0.5
0.718
0.75
0.75
1.81
32
379188
1NB0816
1/2
1
0.5
0.875
0.75
0.8
1.93
41
379189
1NB1204
3/4
1/4
0.687
0.25
0.75
0.45
1.55
27
379190
1NB1206
3/4
3/8
0.687
0.312
0.75
0.52
1.62
27
379191
1NB1208
3/4
1/2
0.687
0.437
0.75
0.6
1.7
27
379192
1NB1210
3/4
5/8
0.687
0.593
0.75
0.7
1.81
30
379194
1NB1216
3/4
1
0.687
0.875
0.75
0.8
1.96
41
379195
1NB1224
3/4
1 1/2
0.687
1.437
0.95
0.85
2.3
55
379196
1NB1604
1
1/4
0.843
0.185
0.97
0.45
1.8
1.375"
379197
1NB1606
1
3/8
0.843
0.375
0.97
0.52
1.87
1.375"
379198
1NB1608
1
1/2
0.843
0.437
0.97
0.6
2.07
1.375"
379199
1NB1612
1
3/4
0.843
0.659
0.97
0.75
2.22
1.375"
379201
1NB1620
1
1 1/4
0.843
1.125
0.97
0.8
2.27
50
379202
1NB2012
1 1/4
3/4
1.203
0.659
0.97
0.75
2.17
1.75"
379203
1NB2016
1 1/4
1
1.203
0.875
0.97
0.8
2.27
1.75"
379205
1NB2024
1 1/4
1 1/2
1.203
1.437
0.97
0.85
2.32
55
379206
1NB2032
1 1/4
2
1.203
1.812
0.97
1
2.47
70
379207
1NB2416
1 1/2
1
1.312
0.875
1
0.8
2.3
50
379208
1NB2420
1 1/2
1 1/4
1.312
1.125
1
0.8
2.3
50
379210
1NB2432
1 1/2
2
1.312
1.812
1
1
2.5
70
379211
1NB3216
2
1
1.812
0.875
1.03
0.8
2.33
65
379212
1NB3224
2
1 1/2
1.812
1.312
1.03
0.85
2.43
65
379214
1NB3240
2
2 1/2
1.812
2.37
1.03
1
2.65
3.25"
379215
1NB4032
2 1/2
1
-
-
-
-
-
-
379217
1NB4832
3
2
2.62
1.812
1.6
1
3.23
90
379218
1NB4840
3
2 1/2
2.62
2.37
1.6
1
3.23
90
IMPORTANT: The technical data given on this website is for preliminary information purposes only and is published without guarantee. All line drawings are for illustrative purposes only and should not be regarded as wholly accurate in every detail. We reserve the right to withdraw or to alter the specification of any product without notice. For more information, please consult our Terms of Business.
If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.
