A370 Integral Backstay Adjusters

Ergonomics meets economics. The new Navtec Series 9 Integral incorporates several key design features while keeping to the high marine standard that Navtec is known for. The Series 9 design moves the hydraulic feed tube inside to give the unit a sleek look. The pump piston size has been increased to 1/2″ to increase flow, which produces the faster action needed for today’s modern mast. The Integral is designed to be used with the Integral Toggle. Available with a black or a clear finish.

Part NumberMax Pull Force @ ReliefLength ClosedLength OpenWeightMax Wire SizePiston Rod DiameterClevis Pin & Gap
A370-BLE-0063,500 lbs (1,590 kg)31.1 in (790 mm)44.6 in (1133 mm)7.0 lbs (3.18 kg)7/32 in (5.6 mm)9/16 in (14 mm)7/16 in (11.1 mm)
A370-BLE-0105,400 lbs (2,450 kg)31.1 in (791 mm)44.6 in (1134 mm)7.3 lbs (3.31 kg)9/32 in (7.1 mm)9/16 in (14 mm)1/2 in (12.7 mm)
A370-BLE-0126,500 lbs (2,950 kg)33.5 in (850 mm)47.8 in (1213 mm)12.2 lbs (5.53 kg)5/16 in (7.9 mm)5/8 in (16 mm)5/8 in (15.9 mm)
A370-BLE-0178,700 lbs (3,950 kg)33.5 in (850 mm)47.8 in (1213 mm)12.2 lbs (5.53 kg)3/8 in (9.5 mm)5/8 in (16 mm) 5/8 in (15.9 mm)
A370-BLE-02211,100 lbs (5,030 kg)35.5 in (902 mm)50.5 in (1283 mm)15.5 lbs (7.03 kg)7/16 in (11.1 mm)3/4 in (19 mm)3/4 in (19.1 mm)

Backstay Toggle

Part Number **Pin SizeLength Pin-Pin
A371-20A067/16 in (11.1 mm)2.00 in (50.8 mm)
A371-20A101/2 in (12.7 mm)2.00 in (50.8 mm)
A371-20A17A5/8 in (15.9 mm)2.33 in (59.2 mm)
A371-20A223/4 in (19.1 mm)2.98 in (75.7 mm)

The A370 is supplied as standard with a black finish. To order a clear finish, please replace the -BLE in the part number with -CLE.
Integral Backstay Adjuster assembly includes handle, clevis pins and bushings (-6).
* Max relief setting is 4,000 psi, except for -6 and -12, which are 3,000 psi.
** -12 & -17 Cylinders use the A371-20A17A Toggle