Danfoss SVA-S, SVA-L Data sheet

Data Sheet

Shut-oﬀ valves Type SVA-S and SVA-L

65 bar version for all industrial refrigeration and heat pump applications

The new 65 bar SVL range for Industrial Refrigeration and Heat Pumps is based on the successful modular Standard SVL platform. The same exibility, simplicity and eciency are features oered in this new series.

The SVA valves are designed to give favorable ow characteristics and are easy to dismantle and repair when necessary. The valve cone is designed to ensure perfect closing and withstand a high system pulsation and vibration, which can be present specically in the discharge line.

The valves are available from a parts program consisting of:

• Valve housing with DIN or ANSI butt-weld connections and DIN or ASME hard soldering (brazing) connections in angle or straightway and in a variety of sizes

• The function module in Standard neck (SVAS) and Long neck (SVA-L)

Further, SVA-S is available as complete valves with ANSI butt-weld connection.

Function modules (Top Complete) for the SVA Stop valves DN 50 to DN 100 are available in a special high temperature version called SVA-65BT.

AI377236007167en-000301

Shut-o valves, type SVA-S and SVA-L, 65 bar

Features

• Modular Concept:

◦ Each valve housing is available with DIN and ANSI butt weld connection and in several diferent sizes ◦ Possible to convert SVA-S or SVA-L to any other product in the FlexlineTM SVL family (regulating valve, check &

stop valve, check valve or strainer) just by replacing the complete top part

• Fast and easy valve overhaul service. It is easy to replace the top part and no welding is needed

• Optional accessories:

◦ Heavy duty industrial hand wheel for frequent operation ◦ Cap for infrequent operation

• Available in angleway and straightway versions with Standard neck or Long neck (DN 15 to DN 40) for insulated systems

• Each valve type is clearly marked with type, size and performance range

• The valves and caps are prepared for sealing, to prevent operation by unauthorized persons, using a seal wire

• Internal metal backseating:

◦ DN 6 - 65 (¼ - 2

• Internal PTFE backseating:

◦ DN 80 - 200 (3 - 8 in)

• Can accept ow in both directions

• Housing and bonnet material is low temperature steel according to requirements of the Pressure Equipment Directive and other international classication authorities

• Classication: DNV, CRN, BV, EAC etc. To get an updated list of certication on the products please contact your local Danfoss Sales Company

1

⁄2 in)

Shut-o valves, type SVA-S and SVA-L, 65 bar

Media

Refrigerants

Applicable to HCFC, HFC, R717 (Ammonia) and R744 (CO2). For further information please see installation guide for SVA.

New refrigerants

Danfoss products are continually evaluated for use with new refrigerants depending on market requirements.

When a refrigerant is approved for use by Danfoss, it is added to the relevant portfolio, and the R number of the refrigerant (e.g. R513A) will be added to the technical data of the code number. Therefore, products for specic refrigerants are best checked at store.danfoss.com/en/, or by contacting your local Danfoss representative.

Part

Temperature range

Max. working pressure

Housing DN50 -DN100

-60 °C to +190 °C (-76 °F to + 374 °F)

65 bar (943 psi)

Housing other than DN50 -DN100

-60 °C to +150 °C (-76 °F to +302 °F)

65 bar (943 psi)

Function module standard

-60 °C to +150 °C (-76 °F to +302 °F)

65 bar (943 psi)

Function module high temp SVA-65BT

0 °C to +190 °C (32 °F to + 374 °F)

65 bar (943 psi)

P

S

6

5

/

9

4

3

p

s

i

g

S

T

O

P

V

A

L

V

E

S

V

A

-

S

D

N

8

0

/

3

”

@

–

6

0

°

C

\

–

7

6

°

F

→

1

5

0

°

C

\

3

0

2

°

F

Shut-o valves, type SVA-S and SVA-L, 65 bar

Product specication

Design

Housing

Made of special, cold resistant steel

Valve cone

The valve cone can be turned on the spindle, thus there will be no friction between the cone and the seat when the valve is opened and closed and the special design will avoid cone spin due to pulsation and vibration when the valve is in open position. A teon tightening ring provides perfect sealing with minimum closing force.

Spindle

Made of polished stainless steel, ideal for leap seal sealing.

Packing gland

The low temperature packing gland ensures a perfect tightness. The packing glands are equipped with a scraper ring to prevent penetration of dirt and ice into the packing gland.

Table 1: Technical data

Installation

Figure 1: Example of Marking Ring

The valve is designed to withstand high internal pressure. However, the piping system in general should be designed to avoid liquid traps and reduce the risk of hydraulic pressure caused by thermal expansion.

It is recommended that the valves be installed in the direction of ow indicated by the arrow on the valve body. The valve can be installed in the opposite direction but this slightly reduces the kv-value (Cv-value).

P1

P2

P1 P2

Valve size [DN]

Flow direction

Maximum opening and closing pressure

dierential

Maximum closing pressure dierential

Maximum opening pressure dierential

P1

→ P2

P2

→ P1

P2

→ P1

65(80)

60 bar / 870 psi

65 bar / 943 psi

60 bar / 870 psi

100

44 bar / 638 psi

65 bar / 943 psi

44 bar / 638 psi

125

33 bar / 478 psi

65 bar / 943 psi

33 bar / 478 psi

150

21 bar / 304 psi

65 bar / 943 psi

21 bar / 304 psi

200

14 bar / 203 psi

65 bar / 943 psi

14 bar / 203 psi

Shut-o valves, type SVA-S and SVA-L, 65 bar

Maximum opening and closing pressure dierential (for sizes 100 to 200)

Figure 2: Flow direction

The maximum opening pressure dierential is equal to the maximum pressure dierence between inlet and outlet in the ow direction where the valve can be opened using normal hand force without damaging the valve.

The maximum closing pressure dierential is equal to the maximum pressure dierence between inlet and outlet in the ow direction where the valve is sealing according to specications.

The maximum opening and closing pressure dierentials are as default equal to the maximum operating pressure (PS or MWP) for valve sizes up to and including DN 50.

For valve sizes of DN 65(80) or larger than DN 65(80) the opening and closing pressure dierential depends on the ow direction as shown below. Note that the default ow direction indicated by the ow arrow is P1 -> P2.

Table 2: Flow direction

SVA-S 6-10 (1/4 - 3/8 in.)

SVA-S 15-20 (1/2 - 3/4 in.)

10

8

11

9 3

19

20

13

9

4

25

5

1

Danfoss

M148B0100_1

Danfoss

M148B0004_1

17

18

No.

Part

MaterialENISO

ASTM

1

Housing

Steel

G20Mn5QT, 10213-3

LCC, A352

P285QH+QT, 10222-4

LF2, A350

2

Bonnet, Flange

Steel

G20Mn5QT, 10213-3

LCC, A352

P285QH+QT, 10222-4

LF2, A350

P275NL, 10028-3

3

Bonnet, Insert

Steel

11SMn30, 10087

Type 2 R, 683/9

AISI 1213

4

Spindle

Stainless steel

X8CrNiS18-9, 10088

Type 17, 683/13

AISI 3035Cone

Steel

11SMn30, 10087

Type 2 R, 683/9

AISI 1213

8

Packing gland

Stainless steel

X8CrNiS18-9, 10088

Type 17, 683/13

AISI 303

9

Packing washer

Aluminium

10

O-ring

Chloroprene

11

Spring loaded Teon ring

PTFE

12

Bolts

High temperature steel

42CrMo5, 10269

A193

13

Gasket

Fiber, Non-asbestos

17

Cap

Aluminium

18

Gasket for cap

Nylon

19

Locking nut

Steel20Screw

Steel

22

Disk spring

Steel

Shut-o valves, type SVA-S and SVA-L, 65 bar

Material specication

Table 3: SVA-S 6-10 & SVA-S 15-20

Table 4: SVA-S 6-10 & SVA-S 15-20

Danfoss

M148B0035_1

No.

Part

MaterialENISO

ASTM

1

Housing

Steel

G20Mn5QT, 10213-3

LCC, A352

P285QH+QT, 10222-4

LF2, A350

2

Bonnet, Flange

Steel

G20Mn5QT, 10213-3

LCC, A352

P285QH+QT, 10222-4

LF2, A350

P275NL, 10028-3

3

Bonnet, Insert

Steel

11SMn30, 10087

Type 2 R, 683/9

AISI 1213

4

Spindle

Stainless steel

X8CrNiS18-9, 10088

Type 17, 683/13

AISI 303

5

Cone

Steel

11SMn30, 10087

Type 2 R, 683/9

AISI 1213

8

Packing gland

Stainless steel

X8CrNiS18-9, 10088

Type 17, 683/13

AISI 303

9

Packing washer

Aluminium

10

O-ring

Chloroprene

11

Spring loaded Teon ring

PTFE

12

Bolts

High temperature steel

42CrMo5, 10269

A193

13

Gasket

Fiber, Non-asbestos

17

Cap

Aluminium

18

Gasket for cap

Nylon

20

Identication ring

Stainless steel

21

Disk spring

Steel

Shut-o valves, type SVA-S and SVA-L, 65 bar

Figure 3: SVA-S 25-40 (1 - 1½ in.)

Table 5: SVA-S 25-40 (1 - 1½ in.)