navitron
 
Renewable Energy and Sustainability Forum
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Anyone wishing to register as a new member on the forum is strongly recommended to use a "proper" email address. Following continuous spam/hack attempts on the forum, "disposable" email addresses like Gmail, Yahoo and Hotmail tend to be viewed with suspicion, and the application rejected if there is any doubt whatsoever
 
Recent Articles: Navitron Partners With Solax to Help Create A More Sustainable Future | Navitron Calls for Increased Carbon Footprint Reduction In Light of Earth Overshoot Day | A plea from The David School - Issue 18
   Home   Help Search Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Steca TPS 20 Pump Station - spares  (Read 393 times)
greentangerine
Sr. Member
****
Offline Offline

Posts: 457


Osmington, Dorset


WWW
« on: January 09, 2021, 06:33:49 PM »

My system is nearly ten years old now and the pump and controller have been replaced courtesy of our host in the interim but now the hot side integral ball valve / thermo-syphon / temp gauge thing has developed a leak which has gradually got worse to the extent I have to top the system up around every three weeks or so.

It doesn't appear that Steca sells them and I can't find an obvious distributor in thr UK who might stock spare parts.

Any ideas or am I looking at a new pump station? 




Logged

2.940 kWP (Sharp ND210/Solis 4G 2.5)
2.115 kWP (Kinve KV235-60P/SB1600)
2.000 kWP (Sharp ND250/SB1600)
65 x 58mm SunnPro/Torrent T280 RE OV/SunSpeed2 205
11kW Dean Forge Croft Clearburn 10,000 BTU
SoFar ME3000SP / Pylon US2000 19.2kW
myenergi eddi
Zoe ZE50 R135
MG5 SW EV
Philip R
Hero Member
*****
Offline Offline

Posts: 1815

South Cheshire


« Reply #1 on: January 11, 2021, 09:19:53 AM »

Can you be a bit more specific about the leak location? Is it leaking to the outside, or through the pressure relief valve? The prv does not appear to connect to an air gap/ tundish, so little leaks would not be noticeable or obvious.
Logged
Fintray
Hero Member
*****
Offline Offline

Posts: 976



« Reply #2 on: January 11, 2021, 10:29:13 AM »

Looking at the staining to the right of the valve in the second picture it is difficult to identify the exact position of the leak but there does look to be a joint just below the valve.
I would take out that side between the inlet and outlet pipes and remake all the joints with new seals/PTFE tape/sealing compound etc.
Logged

3.87kWp PV
10.24kWp PV SolarEdge system
Tesla Powerwall 2
100 x 47mm Navitron tubes (still being installed!)
MK2 PV router DHW diverter
Morso 5kW WBS
Nissan Leaf
greentangerine
Sr. Member
****
Offline Offline

Posts: 457


Osmington, Dorset


WWW
« Reply #3 on: January 11, 2021, 04:35:22 PM »

Can you be a bit more specific about the leak location? Is it leaking to the outside, or through the pressure relief valve? The prv does not appear to connect to an air gap/ tundish, so little leaks would not be noticeable or obvious.

The leak is from the thing that turns i.e. the mount for the temperature gauge that also switches the valve on / off.  It runs down and pools at the air separator junction - that seems sound as far as I can tell.

Most pump stations (including the one sold by our hosts) appear to have similar valves with built in thermo-syphon and 3/4" male threads so I suspect if I could source one from somewhere it'd probably fit.

I'll call Navitron tomorrow to see if they can sell me one - I don't see anything on the shop site and haven't found anyone else who sells such things outside of the complete unit.
Logged

2.940 kWP (Sharp ND210/Solis 4G 2.5)
2.115 kWP (Kinve KV235-60P/SB1600)
2.000 kWP (Sharp ND250/SB1600)
65 x 58mm SunnPro/Torrent T280 RE OV/SunSpeed2 205
11kW Dean Forge Croft Clearburn 10,000 BTU
SoFar ME3000SP / Pylon US2000 19.2kW
myenergi eddi
Zoe ZE50 R135
MG5 SW EV
ceisra
Full Member
***
Offline Offline

Posts: 122



« Reply #4 on: January 11, 2021, 05:22:37 PM »

A company that is mentioned very often on this forum is https://www.bes.co.uk/
I use them quite often

Search for isolator valves that will take high temps pointed me to  Stainless Steel Ball Valves
https://www.bes.co.uk/catalogsearch/result/?q=Stainless+Steel+Ball+Valve

They will take up to 230c

You will probably need male to male adaptors and they probably stock them also.

I would not use thread tape and go for jointing paste
eg https://www.toolstation.com/tru-blu-pipe-thread-sealant/p40236? never had a problem with it.

Roger

Logged

16 X 240W Panasonic panels with a 3.6 ABB ( PowerOne ) inverter
http://pvoutput.org/list.jsp?id=40128&sid=36661
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
SMFAds for Free Forums
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!