Is the Ball valve with aluminum lever with BSP thread, type 4190 compatible with aggressive chemicals at 120Â°C considering its PTFE seals and nickel-plated brass body?

Ball valve with aluminum lever with BSP thread, type 4190 . compatibility with aggressive chemicals at 120Â°C: Type 4190 has a nickel-plated brass body and chrome-plated brass ball, with PTFE ball seals and FKM+NBR stem seals. Maximum listed operating temperature is +150Â°C, so 120Â°C is within the stated temperature range. However chemical compatibility depends primarily on the specific aggressive chemical: - PTFE seals: excellent chemical resistance to most acids, bases and solvents at 120Â°C, generally suitable for many aggressive media. - Nickelâplated brass body and chromeâplated brass ball: brass alloys can be attacked by ammonia, strong acids (e.g. nitric acid), strong oxidizers, and some halogenated compounds, especially at elevated temperatures; nickel plating offers some protection but may be compromised over time with highly corrosive media. - FKM and NBR stem seals: FKM (fluoroelastomer) resists many oils, fuels and some chemicals at elevated temperatures better than NBR; NBR is more limited (poor with strong acids, ketones and some solvents) and its performance at 120Â°C may be marginal or lead to accelerated aging. Conclusion: For many aggressive chemicals PTFE seals are suitable, but the brass body/ball and NBR component may not be compatible with strongly corrosive or oxidizing chemicals at 120Â°C. You must check the specific chemical (concentration, oxidizing nature) against material compatibility charts and consider alternative materials (stainless steel, full PTFE-lined bodies, or allâFKM seals) if the media is highly corrosive. Also verify pressure rating at 120Â°C per manufacturer/PED documentation before use.

Can the Ball valve with aluminum lever with BSP thread, type 4190 be used for steam service at 140Â°C given its PTFE seals and nickel-plated brass body?

Ball valve with aluminum lever with BSP thread, type 4190 can be used for steam service at 140Â°C only with caution. Its stated operating temperature range is -20Â°C to +150Â°C and ball sealing is PTFE, which can tolerate 140Â°C; stem seals are FKM + NBR, but NBR degrades with high-temperature steam and may not be suitable. Nickel-plated and chrome-plated brass body/ball resist many media but brass can suffer dezincification/ corrosion in steam/condensate environments. Ensure compatibility with steam (including pressure, wet/dry steam, and condensate) and verify that NBR in stem sealing is acceptable at 140Â°C steam; if unsure, use a valve with steam-approved elastomers (e.g., EPDM or high-temp FKM) or stainless steel construction. Also confirm allowable working pressure at 140Â°C per manufacturer/PED documentation before use.

Can the Ball valve with aluminum lever with BSP thread, type 4190 be used for compressed air systems at -20Â°C?

Yes. Ball valve with aluminum lever with BSP thread, type 4190 can be used for compressed air systems at â20Â°C, provided the specific application conditions are met. Key points: - Rated operating temperature range: â20Â°C to +150Â°C. so â20Â°C is within the specified limits. - Seals: PTFE ball sealing (good for air at low temperatures), stem sealing uses FKM + NBR. Note that NBR (nitrile) becomes less flexible and may harden at low temperatures; FKM performs better but specific low-temperature performance depends on compound. - Materials (nickel-plated brass body, chrome-plated brass ball, aluminum lever) are compatible with compressed air. - Working pressure depends on temperature. verify the allowed pressure at â20Â°C from the manufacturerâs pressureâtemperature chart to ensure system pressure stays within safe limits. - Also check for any standards or certifications required for your compressed air installation beyond PED compliance. Recommendation: Confirm the valveâs allowable working pressure at â20Â°C and validate that the NBR seal is acceptable for your operating pressure and duty cycle; if in doubt, choose a version with low-temperature-rated elastomers or consult the manufacturer.

Ball valve with aluminum lever with BSP thread, type 4190

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Additional information

Material	B – brass (bronze)

Universal ball valve type 4190 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: BSP thread. Operating temperature: from -20°C to +150°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
RV-4190-006	Ball valve type 4190 GW BSP 1/4", brass, aluminum lever	-	64	In stock	Enquiry
RV-4190-010	Ball valve type 4190 GW BSP 3/8", brass, aluminum lever	-	64	In stock	Enquiry
RV-4190-013	Ball valve type 4190 GW BSP 1/2", brass, aluminum lever	-	64	In stock	Enquiry
RV-4190-019	Ball valve type 4190 GW BSP 3/4", brass, aluminum lever	-	40	In stock	Enquiry
RV-4190-025	Ball valve type 4190 GW BSP 1", brass, aluminum lever	-	40	In stock	Enquiry
RV-4190-032	Ball valve type 4190 GW BSP 1.1/4", brass, aluminum lever	-	40	In stock	Enquiry
RV-4190-038	Ball valve type 4190 GW BSP 1.1/2", brass, aluminum lever	-	40	In stock	Enquiry
RV-4190-050	Ball valve type 4190 GW BSP 2", brass, aluminum lever	-	40	In stock	Enquiry
RV-4190-065	Ball valve type 4190 GW BSP 2.1/2", brass, aluminum lever	-	40	In stock	Enquiry
RV-4190-075	Ball valve type 4190 GW BSP 3", brass, aluminum lever	-	32	In stock	Enquiry
RV-4190-100	Ball valve type 4190 GW BSP 4", brass, aluminum lever	-	25	In stock	Enquiry

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Universal ball valve type 4190 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: BSP thread. Operating temperature: from -20°C to +150°C.