Features:
• Double flange design
• Excellent Zeta-values
• Cast steel/stainless steel body
• Straight through spindle, hardened bearings
• Spindle blow out protection
• Bi-directional quarter turn valve
• Triple offset disc bearing
• Doouble sided metallic sealing
• Complete insulation possible

Features:
– Self-operating (no auxilary power required)
– Reliable, low maintenance operation
– Over-temperature safety device
– Valves pressure balanced with stainless steel bellows
– 3 thermal controller sizes for optimal selection of proportional range
– Thermal sensors with different time constants
– Exact and easy adjustment
– Setting range is adjustable
– Sensor pocket
– Manual control device

ARI Stevi BBD – Pneumatic actuator
Requaired air supply pressure max 6 bar
Option:
– Assembly of additional devices
– Lever

ARI-STEVI® Pneumatic Actuator

• Reversible pneumatic actuator

• Actuator with rolling diaphragm

• Air supply pressure max. 6 bar

• Stem protection by bellow

• Maintenance-free O-ring sealing

• Assembly of additional devices

Features:

• Compact design

• Precision guided stem

• Burnished stem

• Tapered seat ring

• Rangeability 50 : 1

• Spring loaded PTFE-V ring packing unit

• Two-ply bellows seal as standard

• Travel indicator

• Direct loaded with spring
• Wear resistant seat/disc
• Precision disc alignment and guide
• Possible with soft seal disc
• Possible with EPDM bellow
• Possible with stainless steel bellow

ARI-PREDU®
Pressure regulating valve, straight through with diaphragm actuator DMA

Features:

• Compact design

• Construction without pillars

• Exact and easy adjustment

• Diameter independent ranges

• Simple change of spring and actuator

• 5 exchangeable actuator sizes

• 3 exchangeable spring sizes

• Pressure balanced by stainless steel bellow

• Spindle sealing via stainless steel bellow

• Secondary stem sealing (optional)

• Tapered seat ring

• Screwed seat ring

• Kvs-values reduceable

• Flow divider for noise reduction (optional)

• Plug with PTFE soft seal (optional)

Features:

• Two-ply bellows seal as standard

• DN 15-100 throttling plug as standard

• DN 15- 80 stem with fine thread as standard

• Lubricating nipple as locking device as standard

• Cast iron variations with nodular iron bonnet as standard

• Heat dissipating bonnet

• Stem with bellows seal

• Secondary sealing: gland packing

• Position indicator as standard

• Non-rising handwheel

• Non-rotation lock for each nominal diameter

• External stem thread

• Stem with roll hardened thread

ARI-FABA®LA:

• Bellows seal out of media flow path

• Favourable zeta-values also for small nominal diameters

• Gland packing sleeve with pivot mounted bolts

Features:
• For discharging of slight to highly sub-cooled condensate
• Intermittent mode of operationn
• Robust and resistant to water-hammer
• Integtated non return protection
• Construction:
– with inside strainer Fig. 640
– with outside strainer Fig. 641 (Y)
• Optimized design for quick installation
• Gasket-free sealing of the screwed cap
• Installation in any positiom
• Heat chamber minimize th impact of weather conditions of the trap’s performance (except Fig. 56.641)
• Replaceable controller-unit