Is the Twisted fuel end with NPT male thread, type S3 compatible with LPG systems at -30Â°C to +70Â°C?

Yes. The Twisted fuel end with NPT male thread, type S3 Format is compatible with LPG systems at -30Â°C to +70Â°C. The product specification explicitly lists an operating temperature range of -30Â°C to +70Â°C for LPG applications, it is made to EN 14424, is commonly used in fuel and gas distribution (including LPG), and is available in brass or stainless-steel end-fitting options suitable for the intended hoses and pressures.

Can the Twisted fuel end with NPT male thread, type S3 be used on rubber and thermoplastic hoses with soft textile reinforcement?

Yes. The Twisted fuel end with NPT male thread, type S3 Format is designed for rubber hoses and certain thermoplastic hoses with soft textile reinforcement (no wire spiral). It complies with EN 14424, seals on the external NPT thread, and is commonly used in fuel and gas distribution (e.g., LPG). Standard units are brass (B); an option with a stainless steel end fitting and chrome-plated brass sleeve is available. Working pressure is 16 bar (up to 25 bar for DN25). Operating temperature range is â20Â°C to +65Â°C (â30Â°C to +70Â°C for LPG).

Does the Twisted fuel end with NPT male thread, type S3 require specific torque values for tightening?

Twisted fuel end with NPT male thread, type S3 Format does not have a manufacturer-specified, unique torque value in the provided description. Because the seal is on the NPT thread (tapered thread seal), tightening must achieve proper thread deformation/sealing without overstressing the brass (or stainless) fitting or the hose assembly. Practical guidance: - Use recommended good-practice torque ranges for brass NPT male fittings of the relevant nominal size (DN). Typical hand-tight plus 1â3 turns with a wrench is common for smaller sizes; for larger sizes use calibrated torque values from established tables or manufacturer data. - For DN25 (higher pressure up to 25 bar) exercise additional care; if available, follow the hose or fitting manufacturerâs torque chart. - Do not exceed torque that could deform the brass material, crush the hose tail or damage threads. If using a stainless steel end fitting with a chrome-plated brass sleeve, avoid excessive torque that could strip plating or gall threads. - Apply appropriate sealing compound or tape only if permitted by standard EN 14424 and system requirements; NPT normally forms a seal through thread interference plus sealant. - After initial installation, pressure-test the assembly at working pressure or per applicable standards to verify leak-tightness. For precise torque values for a specific nominal size and material (brass B or stainless end), consult the fitting or hose manufacturerâs technical datasheet or torque tables referenced to EN 14424.

Screw-together fuel fitting with NPT male thread, type S3

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Additional information

Material	B – brass (bronze)

Screw-together threaded fitting type S3 with NPT male thread (thread sealing), manufactured in accordance with EN 14424, intended for rubber hoses and certain types of thermoplastic hoses with soft textile reinforcement (without wire spiral). Widely used in the fuel sector in fuel and gas distribution lines (e.g., LPG). The basic version is made entirely of brass; also available in a stainless steel version (fitting) with a chrome-plated brass sleeve. Material: brass (B). Working pressure: 16 bar (up to 25 bar for DN25). Operating temperature: from -20°C to +65°C (from -30°C to +70°C for LPG).

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
ZP-S3-075-1505-B	Fitting type S 3/4" NPT male hose 15x5 mm, brass	16	25	In stock	Enquiry
ZP-S3-075-1904-B	Fitting type S 3/4" NPT male hose 19x4 mm, brass	20	25	In stock	Enquiry
ZP-S3-075-1905-B	Fitting type S 3/4" NPT male hose 19x5 mm, brass	20	25	In stock	Enquiry
ZP-S3-075-1906-B	Fitting type S 3/4" NPT male hose 19x6 mm, brass	20	25	In stock	Enquiry
ZP-S3-100-2505-B	Fitting type S 1" NPT male hose 25x5 mm, brass	25	25	In stock	Enquiry
ZP-S3-100-2506-B	Fitting type S 1" NPT male hose 25x6 mm, brass	25	25	In stock	Enquiry

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Screw-together threaded fitting type S3 with NPT male thread (thread sealing), manufactured in accordance with EN 14424, intended for rubber hoses and certain types of thermoplastic hoses with soft textile reinforcement (without wire spiral). Widely used in the fuel sector in fuel and gas distribution lines (e.g., LPG). The basic version is made entirely of brass; also available in a stainless steel version (fitting) with a chrome-plated brass sleeve. Material: brass (B). Working pressure: 16 bar (up to 25 bar for DN25). Operating temperature: from -20°C to +65°C (from -30°C to +70°C for LPG).