AMOT C - 9.1.4 Valve handling

30
Technical Specification
Revision: 2 – Sept 2020 OMMC00296
9.1.4 Valve handling
Suitable care must be taken to avoid injury when handling valves. The
mass of the units varies between 1.2 kg (3 lb) and 16.3kg (36 lb),
depending on size and material. See Table 8 for details of all
variations (weights in kg (lbs)).
Type Bronze Cast Iron Steel / Stainless Aluminium
1 1/2CM, CL,
3/4CM, CL,
1CM, CL
2 (4) 2 (4)
3/4CMA, CL,
1CMA, CL
1.2 (3)
½, ¾,
1CM, CL
3.6 (8)
1 1/4CM,
1 1/2CM,
1 1/2CL
3 (6) 3 (6)
1 1/4CCM
4.3 (9.5)
1 1/2CFCF
11 (24)
1 1/2CFSJ,
1 1/2CFRJ
9 (20)
1 1/2CFSH,
1 1/2CFRH
13.5 (30)
1 1/2CFSK,
1/1/2CFSRK
16.3 (36)
Table 8 – Model C Valve Weights
9.1.5 Storage
Protect stored valves against ingress of dirt and airborne contaminates
and avoid frost or direct sunlight. Do not allow the temperature of the
storage area to rise above the maximum continuous temperature
rating of the selected element (refer to Section 9.1.3).
Storage is permitted down to -40°C (-40°F) for valves containing
Nitrile, EPDM, Neoprene ‘O’ rings and down to -26°C (-14.8°F) for
valves containing FKM (Viton) ‘O’ rings but this must be followed by a
slow increase of no higher than 1°C per minute.
Valves must be kept dry and not subjected to any shock loads or
abrasion. Valves may be stored in any position and will not deteriorate
with time, with the exception of the ‘O’ rings, which must be replaced
after 7 years.