Underground ball valves
Applications
- opening and closing for district heating and cooling lines (shut-off)
- underground installations
Available
- in sizes from DN 25 to DN 800
- as full bore or reduced bore
- with welded connections according to EN (DIN) standards
- with various standard stem heights
- also with customized stem heights
- with different length extensions
- with manual gear, electric or hydraulic actuator
- unpainted
- NOTE! separate air release valves (Vexve 231/I and 231/IAP/M)
Characteristics
- fully welded construction
- lightweight
- easy to insulate
- space saving design
- easy to install and use
- maintenance-free
- long service life
- total bi-directional tightness (EN 12266-1, leakage rate A)
- high Kv value (minimum pressure loss, minimized pumping costs)
- high-quality materials, suitable for many different applications
- stainless steel or stainless material plated ball
- trunnion mounted (sizes ≥ DN 600)
- spring loaded PTFE ball seals
- blow-out safe stem construction
- stem sealing with double o-rings
- designed and certified in accordance with EN488: 2015 and EHP003
Long stem ball valve features
Fully welded structure of high quality materials
- pressure vessel steel
- suitable for many different applications and withstands varying water quality
- lightweight and space-saving design
- practically maintenance-free
Easy to install and insulate
- lightweight and simple to install
- the entire valve is easy to insulate
- no leakage risk
- no condensation problems
Standard and custom stem heights
- customer-specific stem heights according to special order
