ST75 Series
Characteristics
ㆍ Floor spring with fix closing force for medium doors.
ㆍ Certified in compliance with EN 1154 /UL / ANSI 156.4 Grade 1
ㆍ Suitable for fire and smoke protection doors(No fire test conducted yet)
ㆍ For double and single action door up to 60kg
ㆍ Closing from 175˚ in both door swing directions with hydraulic control from 170˚
ㆍ Adjustable closing speed(175˚~15˚) and latching speed(15˚~0˚)
ㆍ Cast aluminum body.
ㆍ Universal cover plate in stainless steel.
ㆍ Mechanical Back Check function.
ㆍ Cement box in hot zinc plated.
ㆍ Extended spindle.
Technical attributes
Spring strength(EN) 2 3 Standardard and
external doors≤ 850mm ● ≤ 950mm ● Max.leaf weight(kg) 60 Non-Handed ● Closing speed
adjustable by valve17.5˚ ~ 15˚ ● 15˚ ~ 0˚ ● Backcheck(Mechanical) ● Hold-open Fix 90˚ ~ 105˚ Weight(kg) 5 Dimensions in mm Length 285 Width 82 Height 50 Floor spring tested to EN 1154 ● ANSI 156.4 Grade 1 ● ≤ 850mmStandard and Optional Function - ADJUST CLOSING SPEED
ㆍ VALVE"A" - controls closing speed from MAX. OPENING 175˚ ~ 15˚
ㆍ VALVE"B" - controls closing speed from approx. 15˚ ~ 0˚
ㆍ MECHANICAL BACKCHECK
ㆍ HOLD OPEN(Option possible)
- Fixed 90˚
- Fixed 105˚Manual