Zilimontt 1/2 Inch FOR BSP Automatic Air Vent Auto Cut-Off Self Bleeding Radiator Valve,Automatic Bleed Valve For Radiators, Automatic Bleed Valve For Heating,27 x 26 x 26mm(5pcs)

• 【Automatic Air Vent Valve】: The 1/2" for BSP Automatic Air Vent is designed for easy replacement and compatibility with all conventional radiators featuring a 1/2 inch thread.
• 【Swelling Discs for Leakage Prevention】: This valve utilizes swelling discs that expand upon contact with water, effectively AVOIDING any leakage.
• 【Energy-saving Auto Bleeding】: By continuously and automatically bleeding the radiators, this valve helps save heating energy.
• 【Adjustable Operating Modes】: The product offers three operating modes: fully screwed-in middle knob for automatic venting (which shuts off automatically when all air is expelled from the radiator), partially screwed-in middle knob for venting open, and unscrewed middle knob for vent closure.
• 【Multiple Quantities Available】: Available in quantities of 1, 2, 3, 4, or 5 pieces, allowing flexibility for various installation needs.

Features: *Easy and uncomplicated replacement– suitable for all conventional radiators with 1/2 inch thread. *Works with swelling discs- when in contact with water, the discs swell up to prevent leakage. *Saves heating energy through continuous and automatic bleeding of radiators. *It has a shut off cap that can be used to stop auto venting if so required. *Product has got 3 operating modes:1. Middle knob fully screwed in- automatic venting(it will shut off automaticaly when there is no more air in the radiator).2. Middle knob partially screwed in- vent open. *Middle knob unscrewed- vent closed. Specifications: *Size: 1/2" for BSP. *quantity:1/2/3/4/5pcs *Item dimensions:L x W x H 27 x 26 x 26 millimeters *Style:vent valve *Controller type:ring Package Contents: 1/2/3/5pcs vent valve（for you choose）