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Bigamart
Price
$16.49
Home/Garden/Gardening/Greenhouses & Plant Germination Equipment/Greenhouse Parts & Accessories
Replacement Piston for Speedwellstar Greenhouse Vent Opener – 15kg Automatic Window Cylinder, M10 Thread, Fits Most Standard Vent Openers (Not Compatible with Bayliss) — image 1
Greenhouse Parts & AccessoriesSpeedwellstar✓ In stock

Replacement Piston for Speedwellstar Greenhouse Vent Opener – 15kg Automatic Window Cylinder, M10 Thread, Fits Most Standard Vent Openers (Not Compatible with Bayliss)

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$16.49
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About this item
  • REPLACEMENT PISTON ONLY – This listing is for the piston cylinder only, not a complete vent opener. Designed to replace worn or faulty pistons in your existing automatic greenhouse vent opener
  • M10 THREAD – CHECK COMPATIBILITY BEFORE ORDERING – Fits Speedwellstar vent openers and many similar automatic greenhouse vent openers using a standard M10 (10mm) thread. Please check your existing piston size and thread before purchasing. Not compatible with Bayliss vent openers.
  • 15KG LIFTING FORCE – AUTOMATIC OPERATION – Strong piston lifts up to 15kg, opening and closing your greenhouse window automatically as temperatures change.
  • TEMPERATURE ACTIVATED FUNCTION – Opens automatically between approx. 15–23°C. In colder temperatures the piston will remain closed – this is normal operation.
  • QUICK & EASY TO REPLACE – Remove your old piston and screw in the new one. Before fitting, place the piston in the freezer for 10 minutes and push the pin inward until you feel firm resistance. No tools required and installation takes just minutes.
Product details
Brand
Speedwellstar
Manufacturer
edenStar UK Ltd

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
★★★★★
Excellent
4.5 average rating
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S
Sigalit
🇮🇱 · January 2026
★★★★★

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
🇦🇺 · November 2025
★★★★★

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 1–2 of 10 reviews

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