Is the Manually operated butterfly valve, type 1123H suitable for seawater and chemical media given its EPDM sealing and CF8M disc?

Manually operated butterfly valve, type 1123H is generally suitable for seawater and many chemical media, with the following considerations: - Materials: CF8M (stainless steel 316-grade) disc and AISI 416 stem offer good corrosion resistance; body is gray cast iron with 80 Âµm epoxy coating.suitable for seawater in many applications but less resistant than all-stainless constructions in highly aggressive or long-term marine environments. - Sealing: EPDM seat is compatible with seawater, demineralized water, alcohols and many alkalis (e.g., diluted sodium hydroxide), but EPDM is not resistant to many hydrocarbons, strong oxidizing acids, ketones, and some aggressive chemicals. - Temperature: Rated -15Â°C to +110Â°C (briefly to +130Â°C); suitability depends on media temperature staying within this range. - Pressure/connections: Available in PN6/PN10/PN16, ASA150, JIS 10K . ensure ratings match system. - Certifications: PED, PZH and Lloydâs Register indicate conformity and reliability for industrial use. Conclusion: For typical seawater service and many aqueous chemicals (including diluted alkalis and alcohols) the Manually operated butterfly valve, type 1123H is suitable. For strongly aggressive chemicals, hydrocarbons, high-temperature fluids, or continuous severe marine exposure, evaluate chemical compatibility of EPDM and cast-iron body (or consider all-stainless body and alternative elastomer like FKM/FFKM) before selection.

Can the Manually operated butterfly valve, type 1123H be fitted with a pneumatic actuator for automated control?

Yes. Manually operated butterfly valve, type 1123H can be fitted with a pneumatic actuator for automated control. The product description explicitly states it "can be manually opened and closed or operated by a pneumatic actuator." Before fitting, verify compatibility of actuator torque with valve size (especially DN200+ with lever), ensure pneumatic actuator materials and seals are chemically compatible with your media, and confirm mounting flange/drive interface and pressure/temperature limits (operating temp â15Â°C to +110Â°C, temporarily +130Â°C) meet your application.

Does the Manually operated butterfly valve, type 1123H meet PED 2014/68/EU and have required certifications for pressure systems?

Manually operated butterfly valve, type 1123H meets the PED 2014/68/EU requirements and has the required certifications for pressure systems. According to the product description, it âComplies with the requirements of the PED Directive 2014/68/EUâ and additionally holds a PZH certificate and Lloydâs Register certification, which support conformity and suitability for use in regulated pressure applications.

Manually operated butterfly valve, type 1123H

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Additional information

Material	CS – steel (cast iron)

Universal butterfly valve, wafer type, centric, designed for industrial installations. Used for cold or hot water, drinking water, seawater and demineralized water, alcohols, lime milk, sodium hydroxide, and other media, considering the chemical resistance of the valve material and sealing. Can be manually opened and closed or operated by a pneumatic actuator. The handle positions the valve in 10 positions: “open,” “closed,” and intermediate positions. For sizes from DN200, there is a lever with stepless adjustment. Complies with the requirements of the PED Directive 2014/68/EU. Has a PZH certificate and Lloyd’s Register certification. Body material: gray cast iron EN-GJL-250, coated with 80 µm epoxy. Disc material: stainless steel CF8M. Stem material: stainless steel AISI 416. Lever material: aluminum. Disc and stem sealing: EPDM. Connection: PN6 flange for DN40 ÷ DN150 and DN300, PN10/PN16 for DN32 ÷ DN300, ASA150 for DN40 ÷ DN300, JIS 10K for DN40 ÷ DN300. Operating temperature: from -15°C to +110°C (temporarily up to +130°C).

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
TD-1123-040H	Butterfly valve type 1123, DN 40, manual drive	40	16
TD-1123-050H	Butterfly valve type 1123, DN 50, manual drive	50	16
TD-1123-065H	Butterfly valve type 1123, DN 65, manual drive	65	16
TD-1123-080H	Butterfly valve type 1123, DN 80, manual drive	80	16
TD-1123-100H	Butterfly valve type 1123, DN 100, manual drive	100	16
TD-1123-125H	Butterfly valve type 1123, DN 125, manual drive	125	16
TD-1123-150H	Butterfly valve type 1123, DN 150, manual drive	150	16
TD-1123-200H	Butterfly valve type 1123, DN 200, manual drive	200	16
TD-1123-250H	Butterfly valve type 1123, DN 250, manual drive	250	16
TD-1123-300H	Butterfly valve type 1123, DN 300, manual drive	300	16

Universal butterfly valve, wafer type, centric, designed for industrial installations. Used for cold or hot water, drinking water, seawater and demineralized water, alcohols, lime milk, sodium hydroxide, and other media, considering the chemical resistance of the valve material and sealing. Can be manually opened and closed or operated by a pneumatic actuator. The handle positions the valve in 10 positions: “open,” “closed,” and intermediate positions. For sizes from DN200, there is a lever with stepless adjustment. Complies with the requirements of the PED Directive 2014/68/EU. Has a PZH certificate and Lloyd’s Register certification. Body material: gray cast iron EN-GJL-250, coated with 80 µm epoxy. Disc material: stainless steel CF8M. Stem material: stainless steel AISI 416. Lever material: aluminum. Disc and stem sealing: EPDM. Connection: PN6 flange for DN40 ÷ DN150 and DN300, PN10/PN16 for DN32 ÷ DN300, ASA150 for DN40 ÷ DN300, JIS 10K for DN40 ÷ DN300. Operating temperature: from -15°C to +110°C (temporarily up to +130°C).