Technical drawing
Pressure relief valve · AiFO
Pressure relief valve (up to 20 m3, +1/10°C) ZD-849
Item no. ZD-849 · EAN 2010000051474
- simple design and easy installation
- excellent operation wherever pressure equalisation is needed in rooms of different temperature
- they act progressively by means of rotating diaphragms set in motion by overpressure or underpressure
- made entirely of nylon
- freezer versions resistant to low temperatures
- temperature
- above zero
- energy consumption
- 7 W
- telescopic
- yes (70/130 mm)
In brief
- The ZD-849 is for refrigeration chambers with a volume up to 20 m3.
- Positive version, drawing 7 W, body entirely nylon.
- Telescopic construction with a 70/130 mm range.
Prices and stock levels are in the B2B shop. Sets of cold room fittings are put together to order.
Pressure relief valve (up to 20 m3, +1/10°C) ZD-849 – how to choose the right one
The ZD-849 is a pressure relief valve for refrigeration chambers with a volume up to 20 m3, in the positive-temperature version, drawing 7 W. The body is nylon, and the construction is telescopic with a 70/130 mm range.
The telescope solves a problem that can hold up fitting with fixed-length valves: matching the partition thickness. The range from seventy to one hundred and thirty millimetres covers typical chamber panels along with their finish.
Seven watts in a cold store is a draw on the level of an indicator lamp. In the positive version there is no need for intensive heating, since water at the passage does not turn to ice.
How to match the fittings to the panel thickness and the weight of the door – we explained it in the selection guide for this category.
Where it works
- Small back-of-house cold stores and prep rooms
- Chambers with a non-standard wall thickness
- Catering fit-outs of a dozen or so cubic metres
- Installations with a limited power reserve on the board
FAQ
Frequently asked questions
Have not found your answer? Give the panel thickness and the door dimensions – we will select a complete set of fittings.
Ask a questionWhat does the 70/130 mm figure mean?
It is the adjustment range for the passage length through the partition. The valve extends within these limits, so one item covers several panel thicknesses.
How does the ZD-849 differ from the ZD-847?
In the operating temperature range - this valve is the positive version, the other the freezer one. Volume, power draw and telescopic adjustment stay identical.
Enquiry
We will quote Pressure relief valve (up to 20 m3, +1/10°C) ZD-849 for your appliance
Give the panel thickness, the door dimensions and the type of cold room – we will reply with a selection and a quote.
B2B shopGet in touch
We usually reply within 24 working hours.