Area of use

The throttle valve is used for instance in listed buildings or where there is a need to maintain an antigue finish.
The throttle handle and valve are made of polished, lacquered brass. The valve is manually adjusted with the handle, which can also be fitted to valves and replacement inserts in the rest of the MMA range.

Description

The throttle valve unit consists of pre-settable valve and throttle handle that can be operated as a handwheel.
Elbows and nuts, as well as return valves and tails are available as accessories.
The FV valve range offers a very precise pre-setting feature concealed under the stuffing box.
See FV valve for more information.
The valve is available in a straight and angled design.
The RV return valve is fitted with a spindle that is used to close and pre-set the valve.
See RV valve for more information.
The return valve is available in a straight and angled design.

Technical data

Pressure class
PN 10
Max temperature
100°C
Min temperature
5°C
Recommended differential pressure
3-10 kPa
Kv value (pre-set value) with throttle handle
DN 10-15     0,01-0,7/0,01-1,2
DN 20           0,01-0,9/0,01-1,2
Kvs value (max. capacity)
DN 10-20     1,2
Material
Brass
Gaskets EPDM

Preset

Pre-setting FN 2 key
The valve is equipped with an insert which has concealed pre-setting functionality.
Unscrew the protective cap. Remove the stuffing box with the pin (use the tip of the FN2 pre-setting key). Insert the pre-setting key with the serrated end in the control sleeve and screw it carefully to the bottom (clockwise). Screw up the number of turns outlined in the diagram.
Refit the stuffing box with the pin.

Pre-setting FV5
Remove the protective cap and the stuffing box as outlined above.
Screw the control sleeve to the bottom as outlined above.
Remove the pre-setting key and fit the pre-setting tool on top of the insert splines, and reinsert the
pre-setting key in to the tool.
Reset the scale to the index mark.
Screw up the control sleeve until the required kv value coincides with the index mark.
Refit the stuffing box with the pin.

Order designations

RSK number Article number Designation Description
480 51 98 4034101 SNH Throttle valve
480 57 51 4042708 FVR 10P Valve straight
480 57 52 4043007 FVR 15 P Valve straight
480 57 53 4043304 FVR 20 p Valve straight
480 64 00 4042806 FVV 10 P Valve angle
480 64 01 4043106 FVV 15 P Valve angle
480 64 02 4043405 FVV 20 P Valve angle
481 91 20 4161305 N10B P Elbow and nut
481 91 21 4161306 N15B P Elbow and nut
481 91 22 4161307 N20B P Elbow and nut
482 16 76 4050103 RVR 10 P Return valve straight
482 16 78 4050703 RVR 15 P Return valve straight
482 17 04 4050803 RVR 20 P Return valve straight
482 16 75 4050203 RVV 10 P Return valve angle
482 16 79 4050903 RVV 15 P Return valve angle
482 17 03 4051003 RVV 20 P Return valve angle
481 90 18 4161206 N10 R P Tail and nut
481 90 19 4161207 N15 R P Tail and nut
481 90 20 4161208 N20 R P Tail and nut
487 53 78 4163201 1/2″ 15K15 Combo fitting 15 mm
487 53 79 4163501 3/8″ 12K12 Combo fitting 12 mm