Is the Bolted Fuel End with BSP Male Thread, Type S4 suitable for LPG systems and what temperature and pressure limits apply?

Yes. The Bolted Fuel End with BSP Male Thread, Type S4 is suitable for LPG systems. It is compliant with EN 14424 and intended for rubber hoses and certain thermoplastic hoses (excluding wire-spiral types), making it appropriate for fuel and gas distribution including LPG. Operating limits: - Working pressure: 16 bar (standard); up to 25 bar for DN25. - Temperature range: -20°C to +65°C (general); for LPG applications: -30°C to +70°C. Materials: standard brass; options include chrome-plated brass (end and sleeve) and stainless-steel end with chrome-plated brass sleeve for enhanced durability.

How should the Bolted Fuel End with BSP Male Thread, Type S4 be maintained and inspected to ensure safe long-term use in fuel and LPG installations?

Maintenance and inspection of the Bolted Fuel End with BSP Male Thread, Type S4 to ensure safe long‑term use in fuel and LPG installations: - Visual inspection: routinely check for corrosion, cracks, deformations, wear or damage on the brass, chrome‑plated surfaces or stainless steel end. Pay special attention to the thread faces and flat sealing surfaces for nicks, burrs or contamination that could compromise the seal. - Seal and connection check: inspect the flat sealing area and mating surfaces for cleanliness and proper contact. Verify that sealing faces are free of fuel residue, dirt or compression set in any gasket/washer used. - Tightness and torque: confirm fittings are bolted and torqued to the manufacturer’s recommended values. Avoid over‑tightening which can damage threads or sealing faces; re‑torque after initial service run if specified. - Hose interface: examine the clamping sleeve and hose seating for slippage, chafing, bulging or deterioration of rubber/thermoplastic layers (excluding wire‑spiral hoses). Replace hose or sleeve if reinforcement or cover is compromised. - Pressure and leak testing: perform periodic leak checks and pressure tests appropriate to the system (up to the rated 16 bar, and where applicable DN25 up to 25 bar) following safety procedures. Check joints under both static and operational pressures. - Temperature and environment monitoring: ensure operating temperatures remain within specified ranges (-20°C to +65°C; for LPG −30°C to +70°C). Inspect after exposure to extreme temperatures or aggressive environments (salt, chemicals) for accelerated wear. - Corrosion protection: for chrome‑plated and stainless options, verify plating integrity and treat any surface corrosion promptly. Replace severely corroded parts. - Scheduled replacement: follow a preventive replacement schedule based on operating hours, cycles, and exposure; immediately replace fittings showing degradation of sealing surfaces, threads, or structural integrity. - Documentation and training: record inspections, tests and replacements. Ensure personnel are trained in correct assembly, torquing and inspection procedures and aware of EN 14424 compliance requirements. Following these steps will maintain sealing integrity, mechanical strength and safe operation of the Bolted Fuel End with BSP Male Thread, Type S4 in fuel and LPG systems.

Bolted Fuel End with BSP Male Thread, Type S4

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Additional information

Material	B – brass (bronze)

The screwed end fitting type S4 with external BSP thread (flat sealing), manufactured in compliance with EN 14424, is a reliable solution designed for rubber hoses and selected thermoplastic hoses reinforced with soft textile layers, excluding wire spirals. Widely applied in the fuel industry, it ensures safe and efficient performance in fuel and gas distribution systems, including LPG installations. The standard version is crafted entirely from high-quality brass, while alternative options include a chrome-plated brass model (end and sleeve) and a durable stainless steel variant (end) combined with a chrome-plated brass sleeve, offering flexibility to meet diverse technical and aesthetic requirements. Engineered for demanding conditions, the fitting withstands a working pressure of 16 bar, with enhanced resistance up to 25 bar for DN25 dimensions, ensuring dependable operation even under higher loads. Its temperature range spans from -20°C to +65°C, and for LPG applications from -30°C to +70°C, guaranteeing consistent performance across varying climates and environments. This robust and versatile fitting delivers long-lasting durability, secure connections, and optimal safety, making it an excellent choice for professionals seeking efficiency, reliability, and compliance with industry standards in fuel and gas transfer systems.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
ZP-S4-100-1904-B	End type S GZ BSP 1" hose 19x4 mm, brass	20	25	In stock	Enquiry
ZP-S4-100-1905-B	End type S GZ BSP 1" hose 19x5 mm, brass	20	25	In stock	Enquiry
ZP-S4-100-1906-B	End type S GZ BSP 1" hose 19x6 mm, brass	20	25	In stock	Enquiry
ZP-S4-100-2505-B	End type S GZ BSP 1" hose 25x5 mm, brass	25	25	In stock	Enquiry
ZP-S4-100-2506-B	End. type S GZ BSP 1" hose 25x6 mm, brass	25	25	In stock	Enquiry
ZP-S4-125-3206-B	End. type S GZ BSP 1.1/4" hose 32x6 mm, brass	32	16	In stock	Enquiry
ZP-S4-150-3806-B	End type S GZ BSP 1.1/2" hose 38x6.5 mm, brass	38	16	In stock	Enquiry

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The screwed end fitting type S4 with external BSP thread (flat sealing), manufactured in compliance with EN 14424, is a reliable solution designed for rubber hoses and selected thermoplastic hoses reinforced with soft textile layers, excluding wire spirals. Widely applied in the fuel industry, it ensures safe and efficient performance in fuel and gas distribution systems, including LPG installations. The standard version is crafted entirely from high-quality brass, while alternative options include a chrome-plated brass model (end and sleeve) and a durable stainless steel variant (end) combined with a chrome-plated brass sleeve, offering flexibility to meet diverse technical and aesthetic requirements. Engineered for demanding conditions, the fitting withstands a working pressure of 16 bar, with enhanced resistance up to 25 bar for DN25 dimensions, ensuring dependable operation even under higher loads. Its temperature range spans from -20°C to +65°C, and for LPG applications from -30°C to +70°C, guaranteeing consistent performance across varying climates and environments. This robust and versatile fitting delivers long-lasting durability, secure connections, and optimal safety, making it an excellent choice for professionals seeking efficiency, reliability, and compliance with industry standards in fuel and gas transfer systems.