Danfoss QDV 15 Data sheet

Data Sheet

Shut-off valve
Type QDV 15

Quick Closing Drain Valve designed particularly for
draining oil from systems

QDV is a shut-o valve, designed particularly
for draining oil from systems containing
refrigerant (ammonia) under pressure.

The valve will close immediately on release of
the handle, thus protecting user and
environment against unnecessary refrigerant
leaks. The valve should as a rule be installed as
illustrated in g. 1.

In order to prevent hydraulic pressure building
up between the stop valve and the QDV an
integral relief device is included as part of the
cone arrangement, which will open at approx.
16 bar (232 psig).

QDV is designed to meet the safety demands
specied by national and international
authorities within industrial refrigeration.

Features:

• Applicable to R717 (ammonia)

• Meets the safety demands within industrial
refrigeration

• Handle can be positioned 360°

• Built-in integral relief device opening when
16 bar (232 psig) is exceeded. (preventing
hydraulic pressure building up between shut-
o valve and QDV)

• Can be supplied together with a stop valve
for quick on site mounting (g. 1)

• Max. operating pressure: 40 bar (580 psig)

• Temperature range: -50 °C – +150 °C (-58 °F –
+302 °F)

• 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.

AI183386419531en-001001

Shut-o valve, Type QDV 15

Media

Refrigerants

Liquid refrigerant can be trapped between the stop valve and drain valve causing an unsafe, high-pressure situation,
or potentially damaging either valve.

The internal relief device in the Danfoss QDV allows refrigerant to slowly bleed if internal valve pressure exceeds 16
bar (232 psig). Further, the valve is easily actuated by hand (without tools), and has an internal spring mechanism to
instantly close the valve if the actuator is let go. All QDV valves are in angle orientation with FPT outlet, suitable for
safe draining.

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.

© Danfoss | Climate Solutions | 2021.02 AI183386419531en-001001 | 2

Oil

Q

DV

Temperature range

-50 °C – 150 °C (-58 °F – 302 °F)

Maximum operating pressure

40 bar (580 psig)

No.

Part

Material

DIN/EN

ASTM

1

Housing

Steel

G20Mn5QT
EN10213-3

LCC A352

2

Bonnet

Steel
St37-2

S235JR
EN 10025

AISI 1015

3

Spindle/Cone

Stainless steel
X10CrNiS18-9

S189
EN 10088-3

AISI 303

4

Spring

Steel5O-ring

Cloroprene

6

O-ring

Cloroprene

Shut-o valve, Type QDV 15

Product specication

Pressure and temperature data

QDV is a backpressure dependent valve. If any tube or hose is mounted on the outlet of the QDV it has to be
calculated to prevent back pressure building up when relieving.

For further information please see installation guide for QDV. Flammable hydrocarbons are not recommended, for
further information please contact your local Danfoss Sales Company.

Figure 1: QDV

Table 1: Pressure and temperature

Material specication

Figure 2: QDV 15

Table 2: QDV 15

© Danfoss | Climate Solutions | 2021.02 AI183386419531en-001001 | 3