Danfoss QDV 15 Data sheet

Data Sheet

Shut-o valve

Type QDV 15

Quick Closing Drain Valve designed particularly for draining oil from systems

QDV is a shut-off 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 fig. 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 specified 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 shutoff valve and QDV)

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

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

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

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

AI183386419531en-001001

Shut-off 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 specific refrigerants are best checked at store.danfoss.com/en/, or by contacting your local Danfoss representative.

© Danfoss | Climate Solutions | 2021.02

AI183386419531en-001001 | 2

Shut-off valve, Type QDV 15

Product specification

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

Oil

QDV

Table 1: Pressure and temperature

Temperature range	-50 °C – 150 °C (-58 °F – 302 °F)
Maximum operating pressure	40 bar (580 psig)

Material speci€cation

Figure 2: QDV 15

Table 2: QDV 15

	No.	Part	Material	DIN/EN	ASTM
	1	Housing	Steel	G20Mn5QT	LCC A352
				EN10213-3
	2	Bonnet	Steel	S235JR	AISI 1015
			St37-2	EN 10025
	3	Spindle/Cone	Stainless steel	S189	AISI 303
			X10CrNiS18-9	EN 10088-3
	4	Spring	Steel
	5	O-ring	Cloroprene
	6	O-ring	Cloroprene

© Danfoss | Climate Solutions | 2021.02

AI183386419531en-001001 | 3