7/29/2019 Doble Disc Butterfly Valve

1/2

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Butterfly valve with biplane disc and back up sealType BTV-B-M

DN200(8)-3000(118) PN6-25

Description:

BTV-B-M butterfly valves are of fabricated design with biplane disc. Double eccentric positioning of the disc permits smoothraising and resetting of the disc-seal from/on the sealing surface. Our specially designed back up sealing system allowsreplacing the main seal without empting of the penstock and removing of the valve form the pipeline. BTV-B-M valves areused for their compact style and low head loss coefficient in comparison with other shut-off devices. BTV-B-M valves havedouble sealing system on the shafts and special profile of the disc seal for positive, long term tightness.With standard seals materials BTV-B-M valves may be used in liquid and gaseous service for temperatures up to 150C.

Main materials:

Parts Type

standard

Body carbon steel

Maintenanceseal

stainless steel

Main sealingBUNA N / rubber

Disccarbon steel

Clamping ringstainless steel

SealsNOVOTHAN

BUNA N (rubber)

Seat ring stainless steel

Shaft stainless steel

Bushings slide bearings

Other materials are available upon requestPainting for standard valves- epoxy coating

General design:1. Bare shaft 2. Counterweight and servomotor

7/29/2019 Doble Disc Butterfly Valve

2/2

www.tfvalves.com

Butterfly valve with biplane disc and back up seal Type BTV-B-MDN200(8)-3000(118) PN6-25

Dimensions and weights for standard range of BTV-B-M butterfly valves (other sizes and pressure ratings are available on request).

DN BLPN6 PN10 PN16 PN25

A B CWeigtdrive 2

Weigtdrive 3

A B CWeigtdrive 2

Weigtdrive 3

A B CWeigtdrive 2

Weigtdrive 3

A B CWeigtdrive 2

Weigtdrive 3

[mm] [mm] [mm] [mm] [mm] [kg] [kg] [mm] [mm] [mm] [kg] [kg] [mm] [mm] [mm] [kg] [kg] [mm] [mm] [mm [kg] [kg]

800 470 610 610 100 1210 940 610 610 120 1380 1020 640 640 140 1950 1220 680 680 160 3790 1720

900 510 670 670 100 1720 1130 670 670 140 2010 1350 700 700 140 2410 1580 750 750 180 4710 24101000 550 730 730 120 2090 1410 730 730 140 2530 1760 760 760 160 4140 2080 810 810 200 6900 3100

1200 630 870 870 140 3000 2180 870 870 160 4480 2540 900 900 180 5170 3100 8850 4810

1400 710 1000 1000 160 5060 3200 1000 1000 180 5520 3540 1040 1040 200 7700 4270 10920 6320

1500 750 1070 1070 180 5680 3760 1070 1070 200 7930 4430 1100 1100 250 8850 5430 12070 7240

1600 790 1130 1130 180 7590 4280 1130 1130 220 8620 5130 1180 1180 250 9430 6160 15290 10900

1800 870 1270 1270 200 8850 5380 1270 1270 250 11500 6640

2000 950 1400 1400 220 10350 6800 1400 1400 280 12650 8470

2200 1030 1520 1520 250 12650 8500

2400 1110 1650 1650 250 14370 10640

2600 1190 1780 1780 280 17250 12700

2800 1270 1900 1900 280 18970 14800

3000 1350 2000 2000 300 21850 16600

Flange in accordance with ISO / DINFlanges in accordance with ANSI and MSS available on requestDimensions and weights are preliminary only and are subject to change during detail design.