NTVS – 2-tee DIN-standard ventiil

NTVS

The NTVS series is intended for control of hot and cold water, glycol-mixed water, steam and district heating. The valves from DN20 to DN150 are pressure balanced, which means that they can handle differential pressure with low force. The valve has a soft seal between cone and seat, which makes it completely tight. It has self-adjusting teflonpackings and o-rings in viton.

For applications in steam and at a pressure drop of 7 bars or higher, we recommend using a metal packing (stainless steel). Use the extra letter M at the end of the reference type when ordering a valve with metal packing, for example NTVS50-27M instead of the usual NTVS50-27. For valves with metal packing, the maximum leakage is 0.05 % of kvs.

The NTVS valves meet the requirements of DIN-standard DIN 3202/F1 and ISO 5752 table 1.

Tehnilised andmed

Pressure rating PN16
Connection Flanges according to SS 335 table 6
Flow characteristics Equal percentage
Max. leakage 0.0 % of the kvs value (PTFE gasket, carbon-filled 25 %, no leakage) / 0.05 % of kvs for NTVS…-…M models with metal packing
Media temperature -5…+185°C
Media Hot, cold, glycol-mixed water or steam
Rangeability 100:1
Max, differential pressure 1600kPa
Body Nodular cast iron Grade 500/7
Seat Stainless steel 304S15 (DN15-DN100) or gunmetal 1400 LG2 (DN125-150)
Plug Stainless steel 303S31 (DN15-DN100) or gunmetal 1400 LG2 (DN125-150)
Stem Stainless steel 303S31
Lining Stainless steel 304S15
Seat packing, soft seal PTFE with 25 % carbon
Seat packing, metal seal Stainless steel X3CrNiMoN27-5-2
Packing box Dezincification resistant brass CW 602N, self-adjusting teflon
O-rings Viton

 

Tootevalik

NTVS15-0,4
Nominal diameter
DN15
Kvs
0.4
Stroke
20 mm
NTVS15-1,0
Nominal diameter
DN15
Kvs
1.0
Stroke
20 mm
NTVS15-1,6
Nominal diameter
DN15
Kvs
1.6
Stroke
20 mm
NTVS15-2,7
Nominal diameter
DN15
Kvs
2.7
Stroke
20 mm
NTVS20-0,8
Nominal diameter
DN20
Kvs
0.8
Stroke
20 mm
NTVS20-1,6
Nominal diameter
DN20
Kvs
1.6
Stroke
20 mm
NTVS20-2,7
Nominal diameter
DN20
Kvs
2.7
Stroke
20 mm
NTVS20-3,9
Nominal diameter
DN20
Kvs
3.9
Stroke
20 mm
NTVS20-6,3
Nominal diameter
DN20
Kvs
6.3
Stroke
20 mm
NTVS25-1,6
Nominal diameter
DN25
Kvs
1.6
Stroke
20 mm
NTVS25-2,5
Nominal diameter
DN25
Kvs
2.5
Stroke
20 mm
NTVS25-4,0
Nominal diameter
DN25
Kvs
4
Stroke
20 mm
NTVS25-6,3
Nominal diameter
DN25
Kvs
6.3
Stroke
20 mm
NTVS25-10
Nominal diameter
DN25
Kvs
10
Stroke
20 mm
NTVS32-4,0
Nominal diameter
DN32
Kvs
4
Stroke
20 mm
NTVS32-6,3
Nominal diameter
DN32
Kvs
6.3
Stroke
20 mm
NTVS32-10
Nominal diameter
DN32
Kvs
10
Stroke
20 mm
NTVS32-16
Nominal diameter
DN32
Kvs
16
Stroke
20 mm
NTVS40-6,3
Nominal diameter
DN40
Kvs
6.3
Stroke
20 mm
NTVS40-10
Nominal diameter
DN40
Kvs
10
Stroke
20 mm
NTVS40-16
Nominal diameter
DN40
Kvs
16
Stroke
20 mm
NTVS40-27 Nominal diameterDN40 Kvs27
Stroke
20 mm
NTVS50-6,3 Nominal diameterDN50
Kvs
6.3
Stroke
20 mm
NTVS50-10 Nominal diameterDN50
Kvs
10
Stroke
20 mm
NTVS50-16 Nominal diameterDN50
Kvs
16
Stroke
20 mm
NTVS50-27 Nominal diameterDN50
Kvs
27
Stroke
20 mm
NTVS50-39 Nominal diameterDN50
Kvs
39
Stroke
20 mm
NTVS65-16 Nominal diameterDN65
Kvs
16
Stroke
20 mm
NTVS65-27 Nominal diameterDN65
Kvs
27
Stroke
20 mm
NTVS65-39 Nominal diameterDN65
Kvs
39
Stroke
20 mm
NTVS65-63 Nominal diameterDN65 Kvs

63
Stroke
20 mm
NTVS80-100 Nominal diameterDN80 Kvs100
Stroke
20 mm
NTVS100-160 Nominal diameterDN100 Kvs160
Stroke
38 mm
NTVS125-215 Nominal diameterDN125 Kvs215
Stroke
40 mm
NTVS150-410 Nominal diameterDN150 Kvs410
Stroke
40 mm

 

Vastavusdeklaratisoon

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