Danfoss BSV 8 Installation guide

Installation Guide

Safety relief valves

BSV 8

Installation

安装方向

148R9506

148R9506

2

1

BSV mounted as safety valve:
with fitting 148F3019

BSV 作为安全阀安装：
配合部件 148 F 3019

Upwards

朝上

3

BSV mounted as pilot valve for POV:
with fitting 2469+069

BSV 作为 POV 导阀安装：
配合部件 2469+069

Upwards

朝上

4

© Danfoss | DCS (MWA) | 2021.01

Info for UK customers only:Danfoss Ltd. Oxford Road, UB9 4LH Denham, UK

AN04378644352901-000401 | 1

ENGLISH

Installation

Refrigerants

Applicable to all common non-flammable
refrigerants, including R717 and non­corrosive gases/liquids dependent on
sealing material compatability.
Special types required for flammable
hydrocarbones. The valve is only
recommended for use in closed circuits. For
further information please contact Danfoss.

Temperature range

Temperature range for BSV used as an
external safety relief valve:
–30/+100°C (–22/+212°F)

Temperature range for BSV used as a pilot
valve for POV:
–50/+100°C (–58/+212°F)

Note:

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

Assembly

Remove welding slag and dirt from tubes
and housing before the valve is mounted.
Mount the valve as shown in fig. 4.

Colours and identification

The valves are Zinc-Chromated in the
factory. If further corrosion protection
is required, it can be painted. Precise
identification of the valve is made via the
ID label on the valve housing.
In cases of doubt, please contact Danfoss.
Danfoss accepts no responsibility for
errors and omissions. Danfoss Industrial
Refrigeration reserves the right to make
changes to products and specifications
without prior notice.

Pressure range

The valve is designed for a max. working
pressure of 25 bar g (362 psi g). Danfoss
Industrial Refrigeration A/S is supplying
safety valves adjusted for a certain pressure
(indicated on the ID-plate) and sealed.

Danfoss Industrial Refrigeration guarantees
correct pressure as long as the seal remains
unbroken.

Installation

The valve should be installed with the
spring housing upwards (fig. 1).
By mounting of the safety valve it is
important to avoid the influence of thermic
and dynamic stress (vibrations) (fig. 2).
The valve is designed to withstand a high
internal pressure. However, the piping
system should be designed to avoid liquid
traps and reduce the risk of hydraulic
pressure caused by thermal expansion. It
must be ensured that the valve is protected
from pressure transients like “liquid
hammer” in the system.

Welding

If welding fittings are applied, these
should be dismounted during the welding
process (fig. 3). Only materials and welding
methods, compatible with the flange
material, must be welded to the flange.
Avoid welding debris and dirt in the
threads of the housing and pipes.

© Danfoss | DCS (MWA) | 2021.01

AN04378644352901-000401 | 2