Danfoss BSV-8 Data sheet

Data Sheet

Safety relief valves Type BSV-8

Used as pressure limiting devices to protect hydraulic systems and components

BSV is a standard, back pressure independent safety relief valve, especially designed for protection of small components against excessive pressure and as a pilot valve for the pilot operated internal safety valve, type POV.

BSV is an angle-way safety relief valve which can operate with a very high back pressure. The valve is designed to meet the strict quality demands and safety requirements for refrigeration installations, specied by the international classication societies.

As the valve is not dependent on the back pressure, it is recommended for use as an internal safety relief valve. However, the valve can also be used as an external safety relief valve. The spring housing is tightly sealed to avoid refrigerant leakage.

The inlet ow diameter of the BSV 8 is 8.0 mm

5

(

⁄16 in.).

The valves can be delivered with set pressures between 10 and 25 bar (145 and 363 psig).

Standard pressure setting valves having "TÜV Pressure Setting Certicate" with each valve are also available.

Features:

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

Company.

AI183186419214en-000702

Safety relief valves, Type BSV-8

Media

Refrigerants

Applicable for the refrigerants HCFC, HFC, R717 (Ammonia), R744 (CO2). Flammable hydrocarbons are not recommended. For further information please contact your local Danfoss Sales Company.

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.

Working pressure

Reseating pressure

Set pressure p

Opening pressure

p + 10%

p – 10%

0 100%

Safety relief valves, Type BSV-8

Product specication

Design

BSV is designed as a standard safety relief valve (DIN 3320) which are recommended for refrigeration plants. On a rise in pressure above the set pressure, the safety relief valve will initially start opening slightly, to minimise the outlet of refrigerant. If the pressure continues to increase, the valve will open fully. The safety relief valve will be fully open before the pressure is 10% higher than set pressure, and fully closed before the pressure is 10% below set pressure.

The valve is recommended as an internal safety relief valve because its function is independent of the back pressure. The valve can also be used as an external safety relief valve.

Figure 1: Design

Pressure and temperature data

Pressure

Pressure setting range: 10 – 25 bar (145 – 363 psig), For further information please contact your local Danfoss Sales

Company.

The valves are designed for: Strength test: 43 bar (624 psig) Leakage safety: 25 bar (363 psig) Special circumstances such as vibrations (which should be avoided) and oscillating pressure may require an increased dierence between the operational pressure and the closing pressure.

Pressure setting

The operating pressure of the plant should be at least 15% below the set pressure. This allows a perfect re-seating of the safety relief valve after having been activated.

Temperature range for BSV used as an external safety relief valve:

-30 °C /+ 100 °C (-22 °F /+ 212 °F)

Temperature range for BSV used as a pilot valve for POV:

-50 °C /+ 100 °C (-58 °F /+ 212 °F)



NOTE:

For temperatures below -30 °C (-22 °F), the valve may not re-seat to a 100% gas tightness when activated.

Housing

Made of special steel approved for low temperature application. Spindle and seat are made of stainless steel, to ensure precise operation even during extraordinary conditions. The gasket of the valve cone is made of a special neoprene compound.

21

2

3

17

6

12

13

11

10

8

7

1

Danfoss

M148F0001_1

No.

Part

Material

DIN

ISO

ASTM

1

Housing

Steel

TT St 35 N/V, 17173

TW 6, 2604/3‑75

Grade 1, A333, A334

A350 LF2

(1)

2

Threaded plug

Steel

9S Mn28 1651 - 88

11S Mn28 630/9 - 88

1213

SAE J 403

3

Valve top

Steel

St. 37.2, 1652 - 2 - 90

Fe 360 B, 660 - 80

Grade C, A 283

6

Bellow

Stainless steel

7

Gasket

Aluminium

8

Valve seat

Stainless steel

10

O-ring

Cloroprene (Neoprene)

11

Valve cone

Steel12Spring

Steel

Class C, 17223-1-84

A 679SAE J 403

13

O-ring

Cloroprene (Neoprene)

17

Gasket

Aluminium

21

Marking label

Aluminium

Safety relief valves, Type BSV-8

Material specication

Figure 2: BSV-8

Table 1: Material specication

(1)

Alternative material

Installation

To ensure exact operation of the safety relief valve it should be installed with the spring housing upwards. If the valve is mounted as an internal safety relief valve without any demand for exact opening pressure, the valve may be tted with the spring housing in other positions. When the valve is mounted, it is important to avoid the inuence of static, dynamic and thermal stress.

A very precise technique has been applied for the production of the seal. However, this seal can still be damaged, if dirt is blown from the pipe system into the valve.

Re-calibration/servicing

In certain countries the authorities demand that the valves are checked at least once a year (see local rules).

Size mm

Size in.

Inlet

Outlet

L [mm]

L [in.]

8

5

⁄16

G

3

⁄4

G 1170.67

Valve

Nominal size

Flow diameter

Flow area

De-rated,

certied coef‐

ficient of discharge

Inlet

Outlet

d0A0K

dr

BSV 8

15 mm

20 mm

8 mm

50 mm2

0.43

1

⁄2

in.

3

⁄4

in.

0.315 in.

0.078 in2

q

m

= 0.2883 x C × A0 × Kdr × Kb × √

p

⁄v

q

m

Discharge capacity (kg/h)

C

Discharge function depending of the actual refrigerant (κ) see table 2.

A

0

Flow area of the safety relief valve (mm

2

).

Safety relief valves, Type BSV-8

Control/Identication

After adjustment of the set pressure at Danfoss, the valves are sealed. For that reason Danfoss can only guarantee correct operation, as long as the seal remains unbroken.

All valves are provided with a metal plate with the following information:

• Flow diameter

• Set pressure

• Date of production

• Production number

• Type approved code

Transport/Handling

The valves are tted with special protection covers and packed in purpose made transportation cartons. It is important that the cover remains tted around the valve until it is installed.

NOTE:



To ensure the exact and precise operation of the valve it must be handled with care.

Connections

Available with the following connections:

Outside pipe thread T (ISO 228/1)

Figure 3: Connections T

Table 2: T outside pipe thread, (ISO 228/1)

Capacity

The design and construction of the safety relief valve has been tested and approved by TÜV. This test comprises control of the function of the valve as well as measuring of the capacity, which is the basis of the curves and tables on the following pages. The values in the table are based on saturated gas.

If e.g. back pressure or superheated gas have to be taken into consideration, the formulas or the Danfoss computation program Coolselector can be used.

Table 3: Capacity



NOTE:

The discharge capacity of the safety relief valves are based on (IS0 4126‑1/EN 1268‑1 / prEN 1313 6 (1998)).

Table 4: Discharge capacity

qm = 0.2883 x C × A0 × Kdr × Kb × √

p

⁄v

K

dr

De-rated coecient of discharge (Kdr = Kd × 0.9), (the

Kdr

is certied by TÜV) see table 1.

K

b

Correction factor for sub-critical ow. (-) Kb = 1.0 when the back pressure is lower than approx. 0.5 × relieving pressure (Pb < 0.5 × p).

v

Specic volume of the vapour. (m3/kg)

p

set

Set pressure, the predetermined pressure at which a pressure relief valve under operation starts to open (p

set

is indicated on the metal plate on

the safety relief valve). (bar g)

p

atm

Atmospheric pressure. (1 bar)

p

Relieving pressure, p = p

set

× 1.1 + P

atm

(bar a)

Refrigerant

Isentropic exponent [κ]

Discharge function [C]

R22

1.17

2.54

R134a

1.12

2.5

R404A

1.12

2.49

R410A

1.17

2.54

R717 (Ammonia)

1.31

2.64

R744 (CO2)

1.3

2.63

Air

1.4

2.7

R404A R134a

R22

Air (20 °C)

R717

Set pressure

Capacity

Set pressure

R22

R134a

R404A

R717

Air (20 °C)

13 barg

kg/h

540

575

590

240

300

189 psig

lb/min

19.9

21.2

21.6

8.7

11.1

18 barg

kg/h

745

810

825

325

410

261 psig

lb/min

27.5

29.7

30.3

11.9

15

21 barg

kg/h

875

955

970

375

475

305 psig

lb/min

32.2

35.1

35.7

13.8

17.4

25 barg

kg/h

1060

1175

1200

445

560

363 psig

lb/min

38.9

43.24416.4

20.6

Safety relief valves, Type BSV-8

 NOTE:

For back pressure higher than 0.5 × p, the Danfoss computer program Coolselector or the above mentioned standard must be used when calculating the capacity.

Table 5: Properties of Refrigerants

Figure 4: BSV 8, back pressure = atmosphere pressure

Table 6: BSV 8, back pressure = atmosphere pressure

R404A R134a

R22

Air (20 °C)

R717

Set pressure

Capacity

Set pressure

R22

R134a

R404A

R717

Air (20 °C)

13 barg

kg/h

495

525

535

215

275

189 psig

lb/min

18.2

19.4

19.7810.1

18 barg

kg/h

680

740

755

295

375

261 psig

lb/min

25.1

27.1

27.7

10.9

13.7

21 barg

kg/h

800

875

885

345

435

305 psig

lb/min

29.4

32.1

32.6

12.6

15.9

25 barg

kg/h

965

1075

1095

410

510

363 psig

lb/min

35.5

39.4

40.21518.8

Safety relief valves, Type BSV-8

 NOTE:

The capacity calculation is based on ISO 4126 - 1 / EN 1268 - 1 /prEN 13136 (1998).

Figure 5: BSV 8, back pressure = 0.6 × set pressure (barg/psig)

Table 7: BSV 8, back pressure = 0.6 × set pressure (barg/psig)

 NOTE:

The capacity calculation is based on ISO 4126 - 1 / EN 1268 - 1 /prEN 13136 (1998).

Valve size

ABC∅DAF

Weight

BSV 8 (

5

⁄16 in.)

mm

45

1503250461.5 kg

in.

1.77

5.91

1.26

1.97

1.81

3.3 lb

Safety relief valves, Type BSV-8

Dimensions and weight

Figure 6: BSV 8

Table 8: BSV 8, with threaded connections ISO 228/1 pipe threads



NOTE:

Specied weights are approximate values only.

BSV8T

211

Valve type

BSV

Back pressure independent safety valve

Nominal size in mm

8

DN 8

Connections

T

Outside threaded connections: ISO 228/1 Pipe thread

Fittings for connections must be ordered seperately

Fittings for pilot operation

The welding ttings for single mounted safety relief valve must be ordered seper‐

ately

Pressure setting

Standard pressure setting: 2××

210

10 barg (145 psig)

211

11 barg (160 psig)

212

12 barg (174 psig)

213

13 barg (189 psig)

214

14 barg (203 psig)

215

15 barg (218 psig)

216

16 barg (232 psig)

217

17 barg (247 psig)

218

18 barg (261 psig)

219

19 barg (276 psig)

220

20 barg (290 psig)

221

21 barg (305 psig)

222

22 barg (319 psig)

223

23 barg (334 psig)

224

24 barg (348 psig)

225

25 barg (363 psig)

Standard pressure setting with TÜV certicate: 3××

310

10 barg (145 psig)

311

11 barg (160 psig)

312

12 barg (174 psig)

313

13 barg (188 psig)

314

14 barg (203 psig)

315

15 barg (218 psig)

316

16 barg (232 psig)

317

17 barg (247 psig)

318

18 barg (261 psig)

319

19 barg (276 psig)

320

20 barg (290 psig)

321

21 barg (304 psig)

322

22 barg (319 psig)

323

23 barg (334 psig)

324

24 barg (348 psig)

325

25 barg (362 psig)

Safety relief valves, Type BSV-8

Ordering

How to order

The table below is used to identify the valve required.

Please note that the type codes only serve to identify the valves, some of which may not form part of the standard product range. For further information please contact your local Danfoss Sales Company.

Table 9: Example for type codes

Table 10: Type codes



NOTE:

Where products need to be certied according to specic certication societies, the relevant information should be included at the time of order.

Size

Construction and test facilities are approved by TÜV

mm

in.

Type

barg (psig)

Part No.

8

5

⁄16

BSV8 T 210

10 (145)

2416+200

8

5

⁄16

BSV8 T 211

11 (160)

2416+309

8

5

⁄16

BSV8 T 212

12 (174)

2416+310

8

5

⁄16

BSV8 T 213

13 (189)

2416+201

8

5

⁄16

BSV8 T 214

14 (203)

2416+311

8

5

⁄16

BSV8 T 215

15 (218)

2416+312

8

5

⁄16

BSV8 T 216

16 (232)

2416+221

8

5

⁄16

BSV8 T 217

17 (247)

2416+313

8

5

⁄16

BSV8 T 218

18 (261)

2416+202

8

5

⁄16

BSV8 T 219

19 (276)

2416+225

8

5

⁄16

BSV8 T 220

20 (290)

2416+203

8

5

⁄16

BSV8 T 221

21 (305)

2416+204

8

5

⁄16

BSV8 T 222

22 (319)

2416+224

8

5

⁄16

BSV8 T 223

23 (334)

2416+314

8

5

⁄16

BSV8 T 224

24 (348)

2416+315

8

5

⁄16

BSV8 T 225

25 (363)

2416+205

Size

Each valve is

certied by a representative from TÜV

mm

in.

Type

barg (psig)

Part No.

8

5

⁄16

BSV8 T 310

10 (145)

2416+316

8

5

⁄16

BSV8 T 311

11 (160)

2416+317

8

5

⁄16

BSV8 T 312

12 (174)

2416+318

8

5

⁄16

BSV8 T 313

13 (189)

2416+206

8

5

⁄16

BSV8 T 314

14 (203)

2416+319

8

5

⁄16

BSV8 T 315

15 (218)

2416+320

8

5

⁄16

BSV8 T 316

16 (232)

2416+222

8

5

⁄16

BSV8 T 317

17 (247)

2416+321

8

5

⁄16

BSV8 T 318

18 (261)

2416+207

8

5

⁄16

BSV8 T 319

19 (276)

2416+322

8

5

⁄16

BSV8 T 320

20 (290)

2416+208

8

5

⁄16

BSV8 T 321

21 (305)

2416+209

8

5

⁄16

BSV8 T 322

22 (319)

2416+210

8

5

⁄16

BSV8 T 323

23 (334)

2416+323

8

5

⁄16

BSV8 T 324

24 (348)

2416+324

8

5

⁄16

BSV8 T 325

25 (363)

2416+211

Type

Code number

For stand-alone SFV 15/ SFA 15/ BSV-8: Nipples + gaskets set

148F3019

For system POV + BSV: Nipples + gaskets set

148H3453

Safety relief valves, Type BSV-8

Certied BSV valves with standard set pressure

Table 11: Certied BSV valves with standard set pressure

Certied BSV valves with standard set pressure and TÜV pressure setting certicate with each valve

Table 12: Certied BSV valves with standard set pressure and TÜV pressure setting certicate with each valve

Nipples and gaskets

Table 13: Attention: Fittings for connections must be ordered separately

Type

File name

Document type

Document topic

Approval authority

BSV

EAC RU Д-DK.БЛ08.B.03706

EAC Declaration

Machinery & Equipment

TÜV 0045 202 1204 Z 00354 19 D 001(00)

Pressure - Safety Certicate

EAC RU C-DK.БЛ08.B.01096_20

Pressure - Safety Certicate

PED

033F0473.AD

Manufacturers Declaration

ATEX

Danfoss

EU 033F0685.AK

EU Declaration

EMCD/PED

Danfoss

BSV 8

BV 39409-B0 BV

Marine - Safety Certicate

DNV GL TAP000000M

Marine - Safety Certicate

TUV SV 17-1013

Pressure - Safety Certicate

RMRS 19.10327.266

Marine - Safety Certicate

The BSV-valves are approved in accordance with the European standard specied in the Pressure Equipment Directive and are CE marked. For further details / restrictions - see Installation guide.

Type

BSV 8

Nominal bore

8 mm (0.315 in.)

Classied for

Fluid group I

Category

IV

Safety relief valves, Type BSV-8

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 14: Valid approvals

Table 15: Pressure Equipment Directive (PED)

Table 16: Compliance

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Any information, including, but not limited to information on selection of product, its application or use, product design, weight, dimensions, capacity or any other technical data in product manuals, catalogues descriptions, advertisements, etc. and whether made available in writing, orally, electronically, online or via download, shall be considered informative, and is only binding if and to the extent, explicit reference is made in a quotation or order conrmation. Danfoss cannot accept any responsibility for possible errors in catalogues, brochures, videos and other material. Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered provided that such alterations can be made without changes to form, t or function of the product. All trademarks in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved.

Danfoss BSV-8 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual