N.H.P. Swivel Joint N.H.P.

 

 

 

 

 

 

 

 

Circlip – carbon spring steel.

Washer – steel, zn plated.

Body – s.g. iron.

‘O’ rings – nitrite rubber .

Spindle – steel, e.ni plated.

 

The NHP Swivel Joint is the simplest form of swivel joint used mainly for very slow occasional movements

 

 

 

 

 

 

 

Nominal
size
Part No.
8 (¼”) 16899
10 (3/8″) 16900
15 (½”) 16901
20 (¾”) 16902
25 (1″) 16903
32 (1¼”) 16904
40 (1½”) 16905
50 (2″) 16906

N.H.P. Swivel Joint – Dimensions

‘G’ is the designation for parallel pipe threads to BS2779 and ISO 228/1

Nominal
size
A & B C D E F G H
8 (¼”) G.¼” 29 48 35 8 18 6
10 (3/8″) G.3/8″ 30 49 35 10 18 10
15 (½”) G.½” 49 84 57 16 32 12
20 (¾”) G.¾” 56 90 57 19 32 17
25 (1″) G.1″ 70 116 76 22 43 22
32 (1¼”) G.1¼” 76 122 76 25 43 30
40 (1½”) G.1½” 87 149 95 25 64 36
50 (2″) G.2″ 94 156 95 32 64 45
Dimensions in millimetres

Operational Guidelines

Fluids : Water, mineral oils and lubricated compressed air.
All fluids must be clean and free from abrasive and corrosive particles.

Pressure : 85 bar maximum.

Vacuum : 740 mm Hg.

Temperature : 100°C maximum.

Speed : slow intermittent rotary movement.

Flow capacity
Nominal
size
Liquids*
m³/h
Liquids*
l/min
Air**
m³/h
8 (¼”) 0.3 5 10
10 (3/8″) 0.8 14 30
15 (½”) 1.2 20 42
20 (¾”) 2.4 41 85
25 (1″) 4.1 68 142
32 (1¼”) 7.6 127 264
40 (1½”) 11.0 183 380
50 (2″) 17.2 283 594
* Flow at a velocity of 3 m/s (applies also to other liquids)
** Flow at a velocity of 15 m/s and a pressure of 6 bar