Description; Technical Specifications - Pentair Autotrol 255 Installer Manual

3.

Description

3.1.

Technical specifications

Design specifications/ratings
Valve body ......................................................................... Glass-filled Noryl
Rubber components ......................................................... Compounded for cold water - NSF listed
Valve material certification .............................................. WQA Gold Seal Certified to NSF Std. 372
Weight (valve with controller)........................................... 1.8 kg
Recommended operating pressure ................................. 1.38 - 8.27 bar
Hydrostatic test pressure................................................. 20.69 bar
Water temperature ........................................................... 1 - 38°C
Ambient temperature ....................................................... 2 - 50°C
Flow rates (valve only)
Service at 1.03 bar
(15 psi) drop
(System)
Backwash at
1.72 bar (25 psi)
drop
(per valve)
Service Kv (Cv)
(per valve)
Backwash Kv (Cv)
(per valve)
* n corresponds to the number of valves in the system.
Ref. MKT-IM-021 / A - 20.02.2019
Twin Alternating
Single valve
(2 valves)
3
3.52 m /h 3.52 m
3
1.36 m /h 1.36 m
3
3.4 m /h
(3.99 gpm) (3.99 gpm)
3
1 m /h
(1.2 gpm) (1.2 gpm)
Installer Manual 255/LOGIX 742-762-764 - Description
material
(low lead compliance standard)
Twin Parallel
(2 valves)
3
/h 7 m
3
/h 1.36 m
3
3.4 m /h 3.4 m
(3.99 gpm)
3
1 m /h 1 m
(1.2 gpm)
®
- NSF listed material
Lockout "L"
(n valves)*
3
/h n x 3.52 m
3
/h 1.36 m
3 3
/h 3.4 m
(3.99 gpm)
3 3
/h 1 m /h
(1.2 gpm)
3
/h
3
/h
/h
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