Is the Flapper Check Valve with BSP Female Thread, Type 2251 suitable for use with corrosive chemicals and what materials ensure chemical resistance?

Yes — the Flapper Check Valve with BSP Female Thread, Type 2251 is suitable for use with corrosive chemicals provided the chemical compatibility of the valve’s materials is appropriate for the specific media. The product description explicitly notes it was designed “with full consideration of the chemical resistance of its materials.” Key material details: - Body: high‑quality brass for sizes up to 4" and bronze for 5"–6". These materials offer good general corrosion resistance but have limits with strong acids, alkalis, and some halogenated or ammonia‑containing chemicals. - Disc: brass. Brass is durable and provides precise operation but can be attacked by ammonia, strong acids, and certain aggressive solvents. Operating limits: temperature range −10°C to +90°C and rated for maximum constant working pressure across that range. Recommendation: Verify compatibility by comparing the specific chemical, concentration, temperature and pressure to corrosion charts for brass/bronze. For highly corrosive fluids (strong acids, alkalis, chlorinated solvents, or ammonia) consider specifying alternative materials (e.g., stainless steels, Monel, Hastelloy, or non‑metallic elastomers/linings) or consult the manufacturer to confirm suitability for your service.

Can the Flapper Check Valve with BSP Female Thread, Type 2251 be installed in vertical pipelines or is it strictly for horizontal mounting?

The Flapper Check Valve with BSP Female Thread, Type 2251 is designed for horizontal installation only. The product description explicitly states it is "designed for horizontal installation in accordance with the marked flow direction," which means it should be mounted horizontally to guarantee correct operation, constant working pressure across the temperature range, and reliable sealing. Installing it in a vertical pipeline would risk improper flap/disc operation, potential leakage or premature wear, and deviation from specified performance. For vertical applications, choose a check valve specifically rated for vertical mounting.

Flapper Check Valve with BSP Female Thread, Type 2251

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Additional information

Material	B – brass (bronze)

The universal check valve is a reliable solution for a wide range of industrial applications, ensuring safe and efficient flow control of air, gases, water, chemicals, and petrochemical products, with full consideration of the chemical resistance of its materials. Designed for horizontal installation in accordance with the marked flow direction, it guarantees maximum constant working pressure across the entire temperature range. The robust body, made of high-quality brass for sizes up to 4 inches and durable bronze for 5- and 6-inch versions, provides long-lasting performance even in demanding environments. The brass disc ensures precise operation, while the BSP female thread connection allows for quick and secure installation. With an operating temperature range from -10°C to +90°C, this valve combines versatility, strength, and reliability, making it an essential component for industrial systems requiring consistent protection and uninterrupted performance.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
RV-2251-013	Check valve flap type 2251 GW/GW BSP 1/2"	12	16	In stock	Enquiry
RV-2251-019	Check valve flap type 2251 GW/GW BSP 3/4"	20	16	In stock	Enquiry
RV-2251-025	Check valve flap type 2251 GW/GW BSP 1"	25	16	In stock	Enquiry
RV-2251-032	Check valve flap type 2251 GW/GW BSP 1.1/4"	32	16	In stock	Enquiry
RV-2251-038	Check valve flap type 2251 GW/GW BSP 1.1/2"	38	16	In stock	Enquiry
RV-2251-050	Check valve flap type 2251 GW/GW BSP 2"	50	16	In stock	Enquiry
RV-2251-065	Check valve flap type 2251 GW/GW BSP 2.1/2"	65	16	In stock	Enquiry
RV-2251-075	Check valve flap type 2251 GW/GW BSP 3"	75	16	In stock	Enquiry
RV-2251-100	Check valve flap type 2251 GW/GW BSP 4"	100	10	In stock	Enquiry
RV-2251-125	Check valve flap type 2251 GW/GW BSP 5"	125	10	In stock	Enquiry
RV-2251-150	Check valve flap type 2251 GW/GW BSP 6"	150	10	In stock	Enquiry

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The universal check valve is a reliable solution for a wide range of industrial applications, ensuring safe and efficient flow control of air, gases, water, chemicals, and petrochemical products, with full consideration of the chemical resistance of its materials. Designed for horizontal installation in accordance with the marked flow direction, it guarantees maximum constant working pressure across the entire temperature range. The robust body, made of high-quality brass for sizes up to 4 inches and durable bronze for 5- and 6-inch versions, provides long-lasting performance even in demanding environments. The brass disc ensures precise operation, while the BSP female thread connection allows for quick and secure installation. With an operating temperature range from -10°C to +90°C, this valve combines versatility, strength, and reliability, making it an essential component for industrial systems requiring consistent protection and uninterrupted performance.