Fully lined ball valve
Type NVN-EXTRA / NVN-R
- cavity minimized
- ball and ball shaft one-piece – no blow-out
DN 15 – 250 / PN 10 – 40
NPS ½ – 10 / Class 150 – 300
Range of application:
-10 < T < 150/210°C
Fully lined ball valve
Type NVN-EXTRA / NVN-R
- cavity minimized
- ball and ball shaft one-piece – no blow-out
DN 15 – 250 / PN 10 – 40
NPS ½ – 10 / Class 150 – 300
Range of application:
-10 < T < 150/210°C
Sealing systems
Design characteristics
- cavity minimized
- ball and ball shaft one-piece – no blow-out!
- body material optional
- Carbon Steel 1.0619, ASTM A216 WCB
- Stainless Steel 1.4308, ASTM A341 CF8
- mounting-flange for actuators acc. to ISO 5211
- closing-off with double-sided sealing
- adjustable shaft sealing
- antistatic-ring
- minimum 3 mm lining
Options
- locking device
Sealing systems
Design characteristics
- cavity minimized
- ball and ball shaft one-piece – no blow-out!
- body material optional
- Carbon Steel 1.0619, ASTM A216 WCB
- Stainless Steel 1.4308, ASTM A341 CF8
- mounting-flange for actuators acc. to ISO 5211
- closing-off with double-sided sealing
- adjustable shaft sealing
- antistatic-ring
- minimum 3 mm lining
Options
- locking device
Variants
Type NVN-EXTRA
- full bore design
- maxium flow rates – no pressure loss
Type NVN-R
- reduced bore
- less torque = smaller actuator
AZ ball valves: cavity minimized & anti blow-out design
Sealing systems:
- adjustable triple packing (sealing system CAS)
- disc springs for initial tension of packing “live-loaded” (sealing system CAS-SL)
AZ valve one-piece ball:
- anti blow-out design in case of high pressure or disassembly
- no risk of wear and tear between ball and shaft
- no danger for the lining
- constant torque
- optional: precise control with linear or equal percentage characteristics (type RH)
- customized solutions
Safe lining:
- chemical resistant PFA/FEP lining
- minimum 3mm FEP/PFA lining
- locked in lining
- suitable for toxic and aggressive chemicals
Standard materials
Body:
- Stainless Steel 1.4408 / A351/CF8M
- Ductile Iron EN-GJS-400-18 / ASTM A395 (DN ≥ 8″)
- Carbon Steel 1.0619 / ASTM A216 WCB
Ball:
- ASTM A995 – CD4MCUN (DN ≤ 4″)
- Carbon Steel 1.0619 / ASTM A216 WCB (DN ≥ 6″)