Is the Stainless Steel Hose End HWW170 for High-Pressure Gases, W21.8x1/14" Thread DIN477 compatible with ammonia and CO2 at high working pressures?

Yes. The Stainless Steel Hose End HWW170 for High-Pressure Gases, W21.8x1/14" Thread DIN477 is compatible with ammonia and CO2 at high working pressures. The product description specifies the HPG-HI end fitting is engineered for use with ammonia and carbon dioxide, designed for Teflon hoses in high-pressure gas applications, and built to ensure secure, leak-free performance under demanding conditions. Constructed from AISI 304 stainless steel (fitting) and brass (nut), it provides strength and corrosion resistance suitable for these gases when installed and used according to applicable pressure ratings and standards.

Can the Stainless Steel Hose End HWW170 for High-Pressure Gases, W21.8x1/14" Thread DIN477 be used with helium and argon in cryogenic or very low-temperature conditions?

Yes. The Stainless Steel Hose End HWW170 for High-Pressure Gases, W21.8x1/14" Thread DIN477 Format is specified for compatibility with helium and argon and is manufactured from AISI 304 stainless steel (fitting) with a brass nut, providing good strength and corrosion resistance. It is designed for high‑pressure gas service and to ensure secure, leak‑free connections per DIN477 standards. However, for cryogenic or very low‑temperature applications note: AISI 304 and brass retain usable properties at low temperatures but may become less ductile; sealing performance also depends on the Teflon hose and any elastomeric seals used (Teflon itself performs well at low temperatures). Confirm the complete assembly (hose, fittings, seals) is rated for the specific cryogenic temperature and pressure of your application and validate compatibility with thermal contraction, cyclic loading, and leak tightness. For critical or regulatory cryogenic use, consult the manufacturer’s detailed datasheets and perform appropriate qualification/testing before service.

A fitting for hoses for gases high-pressure with a thread W21.8×1/14″ acc. to DIN477, steel stainless, type HWW170

All products, Technical gases hoses/

A fitting for hoses for gases high-pressure with a thread W21.8x1/14" acc. to DIN477, steel stainless, type HWW170

Additional information

Material	SS – stainless steel

A fitting for hoses teflon HPG-HI for gases high-pressure with a thread internal Whitworth W21.8 x 1/14″, Connection acc. to PN-81/M-69229 (DIN477-1 nr 6). purpose – mi.in.: ammonia, argon, dioxide carbon, hel. Material: Material: steel AISI 304 – A fitting, brass – A nut.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Price	Quantity	Actions	Catalogue
AF-HWW170-21-04-SS-MO	End fitting GW W21.8 DIN477 for PTFE hose DN 5.8, AISI 304 (brass nut)	6	-	In stock	0 €		Enquiry

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A fitting for hoses teflon HPG-HI for gases high-pressure with a thread internal Whitworth W21.8 x 1/14″, Connection acc. to PN-81/M-69229 (DIN477-1 nr 6). purpose – mi.in.: ammonia, argon, dioxide carbon, hel. Material: Material: steel AISI 304 – A fitting, brass – A nut.