Is STOPFLEXÂ® protection compatible with all hydraulic hose fittings (metric, inch, flange) and how do I choose the correct OP-SFO clamp for my hose diameter?

STOPFLEXÂ® protection is compatible with hydraulic hose fittings of various types (metric, inch, flange, etc.), but must be selected to match the specific fitting type used on your system. Compatibility depends on choosing the STOPFLEXÂ® safety device designed for that fitting style. To choose the correct OP-SFO clamp: - Identify your hose outer diameter (OD). - Order the STOPFLEXÂ® clamp with the index OP-SFO-... that corresponds to that hose OD (each OP-SFO size is matched to a specific hose diameter). - Ensure the hose and clamp combination is intended for the fitting type in use (metric/inch/flange) as STOPFLEXÂ® devices are selected by fitting type. Additional checks: - Confirm the hose complies with the listed standards (EN 853, EN 854, EN 855, EN 856, SAE J517). - Make sure system working pressure does not exceed the maximum working pressure specified for the hose per those standards; proper operation of STOPFLEXÂ® is guaranteed only when pressure limits are respected.

Can STOPFLEXÂ® protection prevent hose ejection at pressures up to the maximums specified in EN and SAE standards, and which standards were used in testing?

Yes. STOPFLEXÂ® protection prevents hose ejection when hoses operate at or below the maximum working pressures specified in the standards used for testing. The system was tested on hoses per EN 853, EN 854, EN 855, EN 856 and SAE J517. Proper operation is guaranteed only if the working pressure does not exceed the limits given in those standards and the correct STOPFLEXÂ® clamp (index OP-SFO-...) is selected for the hose diameter and fitting type.

How does STOPFLEXÂ® protection behave if hose pressure briefly exceeds the standard maximum working pressure?

STOPFLEXÂ® protection is designed to hold a hose securely in the event it is pulled from the fitting, using a clamp with a rubber seal that maintains stable fastening despite pressure changes. The system has been tested on hoses operating at the maximum working pressures defined by standards EN 853, EN 854, EN 855, EN 856 and SAE J517, and proper operation is guaranteed as long as those specified working pressures are not exceeded. If hose pressure briefly exceeds the standard maximum working pressure, STOPFLEXÂ® protection may not be guaranteed to perform as tested. Short overpressure spikes can compromise hose integrity, the clamp seal, or the hose-to-fitting interface, reducing the deviceâs ability to retain the hose. Therefore, while the clamp provides robust retention under normal and fluctuating pressures within the rated limits, any exceedance beyond the standardized maximum working pressure carries increased risk of failure and falls outside the conditions under which STOPFLEXÂ® protectionâs performance is certified. For reliable safety, ensure the correct STOPFLEXÂ® clamp (index OP-SFO-...) is selected for the specific hose diameter and fitting type, and avoid operating pressures above the standardsâ specified maximums.

Protection STOPFLEX®

All products, Hose Safety Systems/

Additional information

Standard length [m]	50

STOPFLEX® to system securing, which protects devices against damage and workers against injury in case tearing hose with fastening fittings. torn out with fittings hose will be held using cable. clamp, equipped in rubber a gasket, ensures stable fixing, independently od changing pressure working. securing intended is for lines hydraulic and selects je for individual types ends (metric, inch, flange, etc.). additional should purchase appropriate clamp STOPFLEX® (index OP-SFO-…) for given diameter hose. System has been tested on line working under maximum pressure working hoses, specified in accordance with following standards: EN 853, EN 854, EN 855, EN 856, SAE J517. correct action guaranteed is under a condition not exceeding pressure working the given in standards.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
OP-SF-DIN-14	Securing STOPFLEX DIN 14.5 mm, L= 300 mm	-	-	In stock	Enquiry
OP-SF-DIN-17	Securing STOPFLEX DIN 17 mm, L= 300 mm	-	-	In stock	Enquiry
OP-SF-DIN-18	Securing STOPFLEX DIN 18.5 mm, L= 300 mm	-	-	In stock	Enquiry
OP-SF-DIN-20	Securing STOPFLEX DIN 20.5 mm, L= 300 mm	-	-	In stock	Enquiry
OP-SF-DIN-22	Securing STOPFLEX DIN 22.5 mm, L= 300 mm	-	-	In stock	Enquiry
OP-SF-DIN-24	Securing STOPFLEX DIN 24.5 mm, L= 300 mm	-	-	In stock	Enquiry
OP-SF-DIN-26	Securing STOPFLEX DIN 26.5 mm, L= 300 mm	-	-	In stock	Enquiry
OP-SF-DIN-30	Securing STOPFLEX DIN 30.5 mm, L= 300 mm	-	-	In stock	Enquiry
OP-SF-DIN-34	Securing STOPFLEX DIN 34 mm, L= 450 mm	-	-	In stock	Enquiry
OP-SF-DIN-36	Securing STOPFLEX DIN 36.5 mm, L= 450 mm	-	-	In stock	Enquiry
OP-SF-DIN-42	Securing STOPFLEX DIN 42.5 mm, L= 450 mm	-	-	In stock	Enquiry
OP-SF-DIN-45	Securing STOPFLEX DIN 45.5 mm, L= 450 mm	-	-	In stock	Enquiry
OP-SF-DIN-49	Securing STOPFLEX DIN 49 mm, L= 450 mm	-	-	In stock	Enquiry
OP-SF-DIN-52	Securing STOPFLEX DIN 52.5 mm, L= 450 mm	-	-	In stock	Enquiry
OP-SF-DIN-60	Securing STOPFLEX DIN 60 mm, L= 450 mm	-	-	In stock	Enquiry
OP-SF-SAE-08	Securing STOPFLEX SAE 8.5 mm, L = 300 mm	-	-	In stock	Enquiry
OP-SF-SAE-10	Securing STOPFLEX SAE 10.5 mm, L = 450 mm	-	-	In stock	Enquiry
OP-SF-SAE-10-300	Securing STOPFLEX SAE 3000 3/4" 10.5 mm, L = 300 mm	-	-	In stock	Enquiry
OP-SF-SAE-12	Securing STOPFLEX SAE 12.5 mm, L = 450 mm	-	-	In stock	Enquiry
OP-SF-SAE-14	Securing STOPFLEX SAE 14.5 mm, L = 450 mm	-	-	In stock	Enquiry
OP-SF-SAE-16	Securing STOPFLEX SAE 16.5 mm, L = 450 mm	-	-	In stock	Enquiry
OP-SF-SAE-20	Securing STOPFLEX SAE 20.5 mm, L = 450 mm	-	-	In stock	Enquiry
OP-SF-SAE-25	Securing STOPFLEX SAE 25 mm, L = 550 mm	-	-	In stock	Enquiry
OP-SF-SAE-32	Securing STOPFLEX SAE 32 mm, L = 550 mm	-	-	In stock	Enquiry
OP-SF-V	Securing STOPFLEX 13 mm, L = 450 mm	-	-	In stock	Enquiry

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STOPFLEX® to system securing, which protects devices against damage and workers against injury in case tearing hose with fastening fittings. torn out with fittings hose will be held using cable. clamp, equipped in rubber a gasket, ensures stable fixing, independently od changing pressure working. securing intended is for lines hydraulic and selects je for individual types ends (metric, inch, flange, etc.). additional should purchase appropriate clamp STOPFLEX® (index OP-SFO-…) for given diameter hose. System has been tested on line working under maximum pressure working hoses, specified in accordance with following standards: EN 853, EN 854, EN 855, EN 856, SAE J517. correct action guaranteed is under a condition not exceeding pressure working the given in standards.