Identify Pegler Valve type

[andrew1974]

Good evening. Would anybody be able to identify a Pegler valve? Its located in our airing cupboard on the cold water supply. I think it might be a filter perhaps. The gauge has not worked for a while so I was planning on replacing it. The problem comes with knowing what it is! This system was fitted when our house was built around 2003. I have attached two pictures of it. Thanks

 

[ShaunCorbs]

Pressure reducing valve

 

[snowhead]

It's most likely obsolete, it's not shown on Peglers current models.

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Is it just the gauge you need to replace, they're a standard item?
Is this supplying an Unvented cylinder?

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[andrew1974]

Thanks Gents for the replies. I was planning on changing it out (but I might just change the pressure gauge first). I changed the expansion tank last year as the diaphragm had disintegrated (I did wonder why the pressure dropped so much).