9/16”– 24 EXTRA FINE THREAD
10.5.2 NPT fittings
All SeaStar manual hydraulic steering systems use the same style of fittings for all applications. These are 3/8” compression fittings which utilize a 9/16”–24 extra fine thread on the hose side of the fitting.
NPT THREAD
Figure 10-16. Typical NPT fitting.
CAUTION! NPT fittings are not to be used in a -3 helm and/or cylinder (except HF5548). Doing so will result in irreparable damage to the helm/cylinder. Only use a SeaStar ORB hose fitting in a -3 helm and/or cylinder.
HF5518 Vertical bleeder tee
HF5519 Bleed tee (TM cyl.)
HF5520 Horiz. bleeder tee
HF4202 Horiz. bleeder tee
(2 per kit) For use with BayStar cylinders only.
(2 per kit)
(2 per kit)
(2 per kit)
45° FLARE
3/8” TUBE
3/4” UNF
3/8” TUBE
3/8” TUBE
1/4” NPT
1/8” NPT
BLEED NIPPLE
BLEED NIPPLE
3/8” NPT
BLEED NIPPLE
3/8” NPT
BLEED NIPPLE
HF5521 Vertical bleeder tee
HF5548 Bleed nipple (2 per kit inc. O-ring) For use with front fount cylinders only
HF5527 Union coupling
HF5528 Straight fitting
HF5532 Connector fitting
(2 per kit)
(3 per kit)
(3 per kit)
(3 per kit)
3/8” TUBE
3/8” NPT
3/8” TUBE
3/8” TUBE
1/4” NPT
1/4” NPT
3/8” TUBE
BLEED NIPPLE
HF5529 Elbow fitting
HF6145 SS elbow fitting
HF5534 Elbow fitting (3 per kit)
HF5538 Street elbow
HF5540 45° fitting
(2 per kit) For use with front mount cylinder
(3 per kit)
(3 per kit)
(3 per kit)
1/4” NPT
1/4” NPT
3/8” NPT
1/4” NPT
1/4” NPT
3/8” TUBE
3/8” TUBE
3/8” TUBE
3/8” TUBE
3/8” TUBE
HF5531 Tee Fitting
HF5530 Tee Fitting (3 per kit)
HF5536 Tee Fitting
HF5566 Adapter Fitting
HF5533 Tee Fitting
(3 per kit)
(3 per kit)
(3 per kit)
(2 per kit) 9/16”–18UNF JIC 37.5 FLARE
3/8” TUBE
3/8” TUBE
3/8” TUBE
3/8” TUBE
3/8” TUBE
3/8” TUBE
3/8” TUBE
1/4” NPT
3/8” TUBE
1/4” NPT
1/4” NPT
3/8” TUBE
HF5524 Cap plug nut
HF5526 Tube nut
HF6145 Hose fitting (pivot cyl.)
(3 per kit)
(6 per kit) For use with 3/8” nylon and/or 3/8” copper tubing.
(2 per kit)
1/4” NPT
3/8” TUBE
3/8” TUBE
3/8” TUBE
10-13
EN
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