8/3/2019 4.Disc Valves

1/9

Disc ValvesType LV

for supply and extract air

1/4/EN/4

8/3/2019 4.Disc Valves

2/9

Contents Description

Description 2

Construction Dimensions 3

Installation Details Materials 3

Nomenclature 5Spectral Data 5

Acoustic Data 5

Acoustic Data (Extract air) 6

Acoustic Data (Supply air) 7

Aerodynamic Data Z-LVS S-Z-LVS 8

Order Details 9

Type LV disc valves are suitable for all types of ventilationsystems. Types LVS and S-LVS have been redesigned andthus satisfy the highest standards for comfort criteria.Depending on the application, different constructions are

available for supply (types Z-LVS and S-Z-LVS) and extract(types LVS, S-LVS; LVA and LVK).

By rotating the central disc, the air volume can be changedthis results in changes to acoustic data and pressure dropfigures.

2

LVS S-LVS

LVA

Z-LVS S-Z-LVS

LVK

8/3/2019 4.Disc Valves

3/9

50

E

*

C

D

8

B

50

E*

C

D

8

B

50

C

D

1

Construction Installation Details LVS Z-LVS

The disc valves consist of the valve ring and central disc.

To guarantee a perfect seat, the valve ring is fitted with a

peripheral sealing strip.The air volume flow is adjusted by rotating the central discwhich alters the size of the gap. The central disc is held inposition with a locknut.

A bayonet fitting is used to mount the LVS and Z-LVS typesin the installation subframe.

The units are supplied with an installation subframe.

Material LVS Z-LVS

Face sections made of sheet steel with electrostatic powdercoating (similar to RAL 9010, coating thickness 60 m),

threaded spindle and nut made of galvanised steel,installation subframe made of galvanised sheet steel.

Construction Installation Details S-LVS S-Z-LVS

Disc valves S-LVS and S-Z-LVS are suitable for use inprotected areas for civil defence purposes.The construction is the same as of the LNS and Z-LVStypes, but the units have been shock-tested.

Data on shock resistance:Usage certificate No. 029/92Regulation test class: RK 1.0/10Safety level: A (unrestricted shock resistance)

Material S-LVS S-Z-LVS

Face sections made of sheet steel with electrostatic powdercoating (similar to RAL 9010, coating thickness minimum

100 m), threaded spindle and nut made of galvanised steel,installation subframe made of galvanised sheet steel.

LVSS-LVS

Z-LVSS-Z-LVS

Construction Dimensions Installation Details Materials

3

WeightType Size B C D D1 E* in kg

100 40 99 132 125 104 0.200

LVS 125 46 124 162 150 129 0.290

S-LVS 160 54 159 205 185 164 0.440

200 61 199 245 225 204 0.590

100 40 99 132 125 104 0.230

Z-LVS 125 46 124 162 150 129 0.320

S-Z-LVS 160 54 159 205 185 164 0.500

200 61 199 245 225 204 0.670

* Dimension E must be adjusted according to the line used!

Installation subframe for LVS Z-LVS and S-LVS S-Z-LVS

Mounting the installation subframe withscrews through the holes provided in theflange.

If the unit is mounted to a slightly suspendedceiling the spikes can be bent out from theflange, pressed into the ceiling material andsubsequently bent again.

8/3/2019 4.Disc Valves

4/9

LVA

LVK

WeightType Size A C D E*

in kg

100 12 101 130 106 0,200LVA

160 16 160 190 165 0,300

LVK100 31 99 130 106 0,090

150 33 149 180 155 0,150

* Inducted installations dimension E should be altered to allow for the externaloverall size of the ducting.

Construction Installation Details LVA LVK

The construction of disc valves LVA and LVK is similarstructurally to that of the type LVS.

A screw fixing is used for fixing to the installation subframe.

The disc valves are also supplied with an installationsubframe.

Materials LVA

Face sections and installation subframe are diecastaluminium with no additional treatment, threaded spindleand lock nut are in galvanised steel.

Materials LVK

Face sections and installation subframe, threaded spindleand lock nut are white plastic (impact-resistant polystyrene).

Construction Dimensions Installation Details Materials

8/3/2019 4.Disc Valves

5/9

Relative Spectra L Type LVS S-LVS 1 Pressure drop LVA 100 LVK 100

Relative Spectra L Type Z-LVS S-Z-LVS 2 Pressure drop LVA 160 LVK 150

Nomenclature Spectral Data Acoustic Data

NomenclatureV in l/s: Volume flow rate per disc valve

V

in m3

/h: Volume flow rate per disc valveL in m: Throw distance related to v-L = 0.2 m/s

s in mm: Gap size

v-L in m/s: Time average air velocity at the wall

pt in Pa: Total pressure drop

LWA in dB(A): A-weighted sound power level

LWNC : NC rating of sound power level

LWNR : LWNR = LWNC + 3

LpA, LpNC : A weighting or NC rating respectively of roomsound pressure level LpA LWA 8 dB

LpNC LWNC 8 dB

L in dB/oct.: Relative sound power level with respect to L WA

L W in dB/oct.: Octave band sound power level of regeneratednoise L W = L WA + L

LVS S-LVS Z-LVS S-Z-LVS

Definition of the Throw

Octave centre frequencySize Hz

63 125 250 500 1000 2000 4000 8000

100 0 4 6 5 6 4 16 28125 1 3 3 7 7 3 18 29

160 5 2 3 4 3 8 17 28

200 3 1 4 6 2 10 19 26

Octave centre frequencySize Hz

63 125 250 500 1000 2000 4000 8000

100 7 4 3 1 6 15 26 37

125 8 1 3 2 8 7 26 38

160 8 + 1 + 3 0 7 17 26 37

200 13 8 3 1 10 18 22 35

PressuredropptinPa

Pressuredropp

tinPa

8/3/2019 4.Disc Valves

6/9

3 Sound power level and Pressure drop 5 Sound power level and Pressure dropType LVS and S-LVS Size 100 Type LVS and S-LVS Size 160

4 Sound power level and Pressure drop 6 Sound power level and Pressure drop

Type LVS and S-LVS Size 125 Type LVS and S-LVS Size 200

Acoustic DataExtract air

6

PressuredropptinPa

PressuredropptinPa

PressuredropptinPa

PressuredropptinPa

8/3/2019 4.Disc Valves

7/9

Example

Data given:Z-LVS / Size 125Volume flow per disc valve V = 40 l/sGap size s = 12 mm

Diagram 8: Sound power level and Pressure dropLWA = 37 dB(A) (L WNC = 32 NC) pt = 65 Pa

Diagram 12: Throw distanceL = 2.4 m

At a distance of L = 2.4 m, the time average air velocityv-L = 0.2 m/s.

Corrections from Table on page 5:

7 Sound power level and Pressure drop 9 Sound power level and Pressure dropType Z-LVS and S-Z-LVS Size 100 Type Z-LVS and S-Z-LVS Size 160

8 Sound power level and Pressure drop 10 Sound power level and Pressure drop

Type Z-LVS and S-Z-LVS Size 125 Type Z-LVS and S-Z-LVS Size 200

Acoustic DataSupply air

7

Octave centrefrequency 63 125 250 500 1000 2000 4000 8000

in Hz

L WA 37 37 37 37 37 37 37 37in dB(A)

L+ 8 1 + 3 2 8 7 26 38

in dB(A)

L W + 45 + 36 + 40 + 35 + 29 + 30 + 11 1in dB

PressuredropptinPa

PressuredropptinPa

PressuredropptinPa

PressuredropptinPa

8/3/2019 4.Disc Valves

8/9

11 Throw distance Size 100 13 Throw distance Size 160

12 Throw distance Size 125 14 Throw distance Size 200

Aerodynamic Data Z-LVS S-Z-LVS

8

Throw

distanceLinm

Throw

distanceLinm

T

hrow

distanceLinm

T

hrow

distanceLinm

8/3/2019 4.Disc Valves

9/9

Supply airZ-LVS 1)

S-Z-LVS 1)

LVS1)

Extract airS-LVS 1)

LVA 2)

LVK 3)

1) Not available in size 1502) Only available in size 100 and 1603) Only available in size 100 and 150

Order Details

9

Order Code

/ /LVS 125

100125150

160200

Size

G1

Designchangesreserved

Allrightsreserved

GebrderTroxGmbH

(1999)

Specification TextCircular disc valves, suitable for supply and extract air,

comprising valve ring with peripheral seal, central disc withthreaded spindle and lock nut and installation subframe, S-LVSand S-Z-LVS are officially permitted for use in protected areasfor civil defence applications.

Materials LVS Z-LVSFace sections sheet steel with electrostatic powder coating(colour similar to RAL 9010, thickness 60 m), galvanised steelthreaded spindle and lock nut, installaton subframe galvanisedsheet steel.

Materials S-LVS S-Z-LVSFace sections sheet steel with electrostatic powder coating(colour similar to RAL 9010, thickness min. 100 m);galvanised steel threaded spindle and nut, installationsubframe galvanised sheet steel.

Materials LVA

Face sections and installation subframe are diecast aluminiumwith no additional treatment, threaded spindle and lock nut arein galvanised steel.

Materials LVKFace sections and installation subframe, threaded spindle andlock nut are white plastic (impact-resistant polystyrene).

Order ExampleMake: TROXType: LVS / 160

IEEEEEEEEEEO

EEEEEEEEEEEP

TEEEEEEEZ

EEEEEEEU

0 Without installation subframeG1 Installation subframe LVS, Z-LVS

M1 Installation subframe S-LVS, S-Z-LVSH1 Installation subframe LVAK1 Installation subframe LVK

T

EEEEEZEEEEEU

TEEZEEU