Storage tanks, hydraulic modules and accessories for heating, solar thermal and heat pumps from the range of Westech Solar (Traiskirchen, Austria). In addition to Westech's own items, the range includes products from several manufacturers, which you will find collected here.
Diaphragm expansion vessel of the Aquasystem VSV series for closed solar thermal systems. The vessel takes up the volume expansion of the heat transfer fluid when it heats...
Diaphragm expansion vessel of the Aquasystem VS series for closed solar thermal systems, including wall bracket for 3/4" connection. The vessel compensates the volume change of the heat...
Diaphragm expansion vessel of the Aquasystem VRV series for closed heating and cooling circuits. It takes up the temperature-related volume change of the heating water and stabilises the...
Diaphragm expansion vessel of the Aquasystem AR series for potable and domestic hot water systems. It compensates pressure fluctuations when the tank content heats up. Food-safe EPDM membrane,...
Wall bracket SUB002-WALL for wall mounting of expansion vessels with 3/4" or 1" connection. The vessel is connected via the female thread of the bracket and fixed to...
Wall bracket with clamp for expansion vessels with a diameter of 60 to 380 mm. The clamp encloses the vessel and leaves the connection area free. This is...
Flow-through valve DF001 made of brass for Aquasystem potable water expansion vessels. The T-piece ensures that potable water flows through the vessel and thus avoids stagnant water in...
Three-piece, pre-assembled fitting set for connecting stainless steel corrugated pipe, for example in solar, heating and heat pump lines. The set consists of a brass union nut with...
Stainless steel insert ring for sealing connections on corrugated pipe fittings, for example in solar thermal and heating lines. The ring is inserted into the matching fitting depending...
Flat gasket for union nuts on fittings in heating, solar and heat pump systems, for example as a replacement during maintenance.Note: Mounting and connection by a qualified installer....
Double nipple with male thread on both sides for connecting two components with female thread in heating, solar and sanitary installations. Version with wide sealing surface.Note: Mounting and...
Brass transition nipple for the transition from a male thread to a pipe with 22 mm outer diameter, for example in heating, potable water and solar installations.Note: Mounting...
Brass 90° elbow fitting with brass compression ring for pipes with 22 mm outer diameter, for example copper, PE-X or multilayer pipe. On the versions with male thread,...
Straight brass compression fitting for pipes with 22 mm outer diameter (PE-X, multilayer, copper). The pipe side seals via a brass compression ring, the thread side seals flat.Note:...
Brass reducer with male thread on one side and female thread on the other, flat sealing, as an adapter in heating, solar and sanitary installations.Note: Mounting and connection...
Brass reducing nipple with male threads of different sizes on both sides and wide sealing surfaces, as an adapter in heating, solar thermal and heat pump installations.Note: Mounting...
Equal brass tee with three 1" male threads (parallel, ISO 228-1) for branching in heating, solar and sanitary installations.Note: Mounting and connection by a qualified installer. On request...
Check valve with 1" female thread on both sides. It lets the medium pass in one direction only and prevents backflow, for example in water supply and heating...
Heavy-duty ball valve with nickel-plated brass body CW617N and female threads on both sides to ISO 228, for water, heating, air conditioning and compressed air. Operated via a...
Connection set for connecting an expansion vessel to the tank or system, for example in heating, cooling and hot water systems. Length approx. 126 cm. A cap valve...
Flaring tool with interchangeable clamping jaws for making sealing seats on stainless steel corrugated pipes and solar lines of nominal sizes DN25 and DN32. Body and jaws made...
Impressed current anode for corrosion protection of enamelled and metallic hot water tanks up to 1,000 litres. The activated titanium anode is supplied with protective current via a...
Fans for mounting under panel and column radiators. They increase the air flow at the radiator and distribute the heat faster in the room, which is helpful especially...
Pre-assembled boiler safety group of the 302 series for closed heating systems to EN 12828 up to 50 kW heat output. The group combines automatic air vent, pressure...
Buying guide
Selection guide, standards and practical tips for your project.
We help with selection, sizing and installation partners, Mon to Sun 8 am to 8 pm.
TWL supplies enamelled domestic hot water tanks S with one smooth tube heat exchanger (150 to 2,000 l), solar tanks SO with two heat exchangers (200 to 2,000 l), the heat pump tanks SWP and SWP2 and the efficiency combination tanks EKS and EKS2.
From Heizkraft come the SILO buffer tanks, for example PSS for heating and cooling (50 to 500 l), PS with removable insulation (800 to 1,500 l), PS1 with heat exchanger and SUB 70-GR for under-mounting, as well as the heat pump tanks SILO WP1 and WP2 and the domestic hot water tank SILO TS1 300-GR. They are complemented by the compact2 Hydrobox, a hydraulic module for air-to-water heat pumps with 16 kW, screw-in immersion heaters, an antifreeze valve for heat pumps and a magnetic filter ball valve. Further tanks can be found under hot water and buffer tanks.
Zilio Aquasystem supplies solar expansion vessels VSV with base (35 to 100 l) and VS with wall bracket (18 and 24 l), the expansion vessel VRV for heating and cooling (35 to 200 l) and the potable water expansion vessel AR (12 to 35 l). Matching wall brackets and the DF001 flow-through valve are also available.
Westech itself offers screw connections, insert rings and a striking tool with jaws for corrugated stainless steel pipe DN12 to DN32, brass fittings, a ball valve, a check valve, a connection set for expansion vessels and an electronic protective anode for tanks up to 1,000 l. The range is complemented by items from other manufacturers:
For solar thermal systems and controls, it is also worth taking a look at the solar technology category.
Recommendations
Selected brand-name products for ventilation, filters, heating and plumbing, ready to order.
Guide & news
Ventilation, heating and building technology, explained clearly.
Why Wohnungstechnik
Selected manufacturers, honest advice and delivery straight from the manufacturer.
From Blauberg, S&P, Nilan, Frico, Sanha and more: original goods from the manufacturer.
On request, our installation partners install, mount and service your system on site.
Help with selection, sizing and spare parts, by phone and email.
Delivery in 5 to 10 working days, free shipping in Germany from 100 € (manufacturer shipping from €150 to €250).
Brand partners
We work directly with leading manufacturers. Choose your brand and see the full range.
Contact
Product question, quote for a project or spare part: write to us, we will get back to you as soon as possible.
