Just get some hose like this , https://www.festo.com/cat/da_dk/search?query=pun

you also repair the old with some heat shrink tube or fuel hose to connect the broken pice just to solve problem now.

 

Having a looksee today but rain temp stops play. Right the top pipe on the valve goes to the bulkhead which is actually the Vacuum brake assist reservoir tank. The other pipe must go to the EGR. I however found a problem on mine where the pipe coming from the tank is kinked even though there is a rubber elbow joint at it. Too short a pipe is causing this. So my EGR is as you would say isolated. Battery requires removal to gain access to this area.
Oh and I found mice nest under the engine cover...
Ok, smallbore pipe is 3.69mm and my kinked elbow is getting Vacuum through it but looks damaged.

 

Thanks Goggs.

Mice nest They must jump off the car before a journey otherwise the temp in engine bay would cook them alive

 

Either Silicone pipes or....Halfords have Vacuum hose in 1 meter lengths at £5.69 with 3.2mm bore.
Or how about a 10m length of cotton overbraid hose with 3.5mm bore from fleebay under "VW Golf Scirocco Corrado Turbo Vac Hose 3.5mm CA26" for £14.99.
Its a case here of dump the elbows and fit the hoses direct with nice loops from the valve and brake assist tank. Enie minie moo what should I chose...