The MAHR shut-off valves: Uncomplicated, robust components for many different operating conditions.
Shut-off valve with one flange (F1):
Everywhere where flexible connection is required. A rubber or cloth sleeve (or similar) connects to the downstream element.
Typical example: Between silo and weigher, sieve machines etc.
Shut-off valve with two flanges (F2):
Everywhere where positive connection to the downstream element is necessary. Typical example: Between silo and screw, rotary feeder etc.
Three actuation types can be selected for both base units:
a. Electropneumatic drive
b. Gear motor drive
c. Manual operation
Material / design:
Valve body: die cast aluminium
Valve disk: material grey cast iron with neoprene rubber coating
Shaft journals: material, made of C 40, with self-lubricating plastic bushes which do not come into contact with the product
F1: flange on one side + sleeve nozzle
F2: flange on both sides
a. Electropneumatic drive:
EP 80 - EP 100 - EP 125 = piston diameter
b. Gear motor drive:
Gear motor: Size GM2: 0.55 kW
Gear motor: Size GM2: 0.75 kW
c. Manual operation:
H2: Hand lever 300 mm long
H3: Hand lever 500 mm long
Dust-tight: alternatively pressure-tight up to 0.2 bar
Sealing ring: nitrile rubber (NBR black), temperature-resistant from -30 °C to +130 °C,
not suitable for food
- Physical: very resistant to oils, heat and ageing
- Mechanical: flexible, hardly deformable, very low gas permeability
- Chemical: resistant to mineral oils, hydrocarbonates,
water, steam, gas and vegetable oils
In the case of changing the operating process, it is possible at any time to change the shut-off valves to a different type of actuation