Is the Ball valve with aluminum lever with GZ BSPT, type 4420 suitable for use with aggressive chemicals at 120Â°C considering its nickel-plated brass body and PTFE sealing?

Ball valve with aluminum lever with GZ BSPT, type 4420 . not generally recommended for aggressive chemicals at 120Â°C without a specific compatibility check. Powody: - Body: nickelâplated brass . brass and nickel plating can corrode or suffer dezincification when exposed to many aggressive chemicals (acids, chlorides, ammonia, sour hydrocarbons). High temperature (120Â°C) accelerates degradation. - Sealing: PTFE seats . PTFE has excellent chemical resistance across a wide range and is suitable at 120Â°C, so seats are likely acceptable for many aggressive media. - Stem seals: FKM + NBR . FKM (Viton) resists many chemicals and high temperatures, but NBR degrades with many aggressive solvents and at elevated temp; NBRâs upper temp limit and chemical resistance may be limiting. - PED compliance and stated operating range (-20 to +150Â°C) show mechanical suitability at 120Â°C, but chemical compatibility depends on fluid specifics. - Working pressure may drop at higher temperatures; verify pressure rating at 120Â°C. Recomendation: Before use with aggressive chemicals at 120Â°C, obtain the exact chemical composition and concentration, then consult manufacturerâs chemical compatibility data for brass/nickel plating, PTFE, FKM and NBR. If uncertainty remains, consider valves in corrosionâresistant materials (stainless steel, Hastelloy, or full PTFE-lined) and eliminate NBR where possible.

Can Ball valve with aluminum lever with GZ BSPT, type 4420 reliably handle steam or high-humidity gases at 100Â°C given its PTFE and FKM/NBR seals?

Ball valve with aluminum lever with GZ BSPT, type 4420 can generally handle steam or highâhumidity gases at 100Â°C, but with important caveats. PTFE ball seals tolerate 100Â°C and resist moisture; FKM (Viton) and NBR stem seals have different limits-FKM is typically OK up to ~150Â°C, NBR degrades above ~100Â°C and can lose elasticity in steam/humidity. Nickelâplated brass body and chromeâplated brass ball are acceptable for many gases, but steam can accelerate gasket swell/ageing and may affect NBR. Also consider reduced working pressure at elevated temperature per datasheet/PED. Recommendation: avoid prolonged saturated steam exposure if NBR is present or confirm seal compound grades (use allâFKM or steamârated elastomers) and verify pressure rating at 100Â°C with manufacturer before service.

Can Ball valve with aluminum lever with GZ BSPT, type 4420 be used for potable water systems at varying temperatures up to 150Â°C?

Yes. Ball valve with aluminum lever with GZ BSPT, type 4420 can be used in potable (drinking) water systems across the stated temperature range up to 150Â°C only if several conditions are satisfied: 1. Materials compatibility: - Body: nickelâplated brass and ball: chromeâplated brass are commonly used in water systems, but nickel plating and brass may release trace metals (e.g., lead depending on alloy). verify the brass alloy meets local potableâwater standards (e.g., NSF/ANSI 61, WRAS, ACS) for drinking water. - Seals: PTFE ball sealing is generally safe for potable water and wide temperature range. Stem seals: FKM + NBR. NBR (nitrile) has limited highâtemperature resistance (typically up to ~100â120Â°C depending on grade); FKM (Viton) is acceptable to ~150Â°C. Confirm the specific NBR grade used is rated for prolonged exposure near 150Â°C and is certified for potable water contact. 2. Temperature and pressure limits: - The valveâs allowable working pressure falls with increasing temperature. Ensure the system pressure at the intended operating temperatures does not exceed the valveâs pressure rating at that temperature (consult manufacturer pressure/temperature charts). 3. Regulatory/certification requirements: - Although the valve meets PED 2014/68/EU (pressure equipment), PED does not guarantee potableâwater suitability. Obtain certifications required by your jurisdiction for drinking water use (NSF/WRAS/ACS or equivalent). 4. Application considerations: - Continuous use of potable water near 150Â°C is uncommon (water at 150Â°C is pressurized and used in specialized systems). Make sure system design, seals, and safety measures account for pressurized hot water service. - Aluminum lever is acceptable for actuation but confirm no contact materials or lubricants contaminate drinking water. Conclusion: Ball valve with aluminum lever with GZ BSPT, type 4420 is potentially usable for potable water up to 150Â°C if the specific valve variantâs materials (brass alloy, NBR grade), seals, and workmanship are certified for drinking water and the pressure rating at temperature is not exceeded. Obtain manufacturer confirmation and required potableâwater certifications before installation.

Ball valve with aluminum lever with GZ BSPT, type 4420

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Additional information

Material	B – brass (bronze)

Universal ball valve type 4420 intended for industrial installations. It can be used for air, gases, water, chemicals, petrochemical products, etc., considering the chemical resistance of the valve material and sealing. It meets the requirements of the PED Directive 2014/68/EU. The working pressure depends on the operating temperature. Body material: nickel-plated brass. Ball material: chrome-plated brass. Lever material: aluminum. Ball sealing: PTFE. Stem sealing: FKM + NBR. Connection: GZ BSPT. Operating temperature: from -20°C to +150°C.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
RV-4420-13	Ball valve type 4420 GZ BSPT 1/2", brass, aluminum lever	-	64
RV-4420-19	Ball valve type 4420 GZ BSPT 3/4", brass, aluminum lever	-	40
RV-4420-25	Ball valve type 4420 GZ BSPT 1", brass, aluminum lever	-	40
RV-4420-32	Ball valve type 4420 GZ BSPT 1.1/4", brass, aluminum lever	-	40
RV-4420-38	Ball valve type 4420 GZ BSPT 1.1/2", brass, aluminum lever	-	40
RV-4420-50	Ball valve type 4420 GZ BSPT 2", brass, aluminum lever	-	40

Universal ball valve type 4420 intended for industrial installations. It can be used for air, gases, water, chemicals, petrochemical products, etc., considering the chemical resistance of the valve material and sealing. It meets the requirements of the PED Directive 2014/68/EU. The working pressure depends on the operating temperature. Body material: nickel-plated brass. Ball material: chrome-plated brass. Lever material: aluminum. Ball sealing: PTFE. Stem sealing: FKM + NBR. Connection: GZ BSPT. Operating temperature: from -20°C to +150°C.