To avoid premature hose failure by fatigue, do not exceed Gas: 45 metres / sec Liquid: 22 metres / sec Reduce a further 25% for 45° bends, 50% for 90° bends Where the flow velocity exceeds these rates, an interlocked metal liner or larger hose ID is recommended Pressure Drop Pressure drop in a straight corrugated hose is approximately 1.5
reduced by 50% for a 90% bend, 25% for a 45% bend and so on, proportionately to the angle. With higher velocity, the next larger hose with liner should be used. Pressure Loss To achieve the same pressure loss as in steel pipes, the diameter of the corrugated hose should be increased by 15%. Pressure Derating Factors
Minimum Bend Radius Recommended Recommended Nominal Bend Radius Intermittent OAL (inches) for ½ " OAL (inches) for ¼ Braided Hose Hose OD Weight Static Bend Flexing max. vibration or max. vibration or Hose Size (inches) lb per ft (inches) (inches)1½ " static offset ½ " static offset 8773-01 ½ " .90 .38 1.5 6 9 -
For a hose installed in a constant radius traveling loop (A-Loop), calculate the minimum live length required for 1/2” Annuflex AF4750 traveling 6” (3” above center and 3” below center). • Formula - See Corrugated alog (A-Loop) L = 4R + 1/2T • Dynamic Minimum Bend Radius (See Corrugated alog Annuflex Product Page) 5.5”
600mm dia., bend radius : 0.5D KINK RESISTANCE TEST Seaflex Super-300 600mm dia., bend radius : 1D BURST TEST Seaflex Double Carcass 300mm dia. prototype hose primary carcass : 146bar secondary carcass : 65.7bar BURST TEST Seaflex Double Carcass 600mm dia. prototype hose primary carcass : 122.6bar
FLANGE FITTINGS • Flange Fittings, Non-Lined Page 17 boiling sodium metal. PTFE lined hoses can therefore be used for a wider Bend Radius * Maximum Continuous Hose Length in mm in mm in mm in mm in mm Ft Mtrs ¹/2 15 0.440 11.2 TO SS PB SS, RC/FP RC, SI KYB
Nominal Hose Bore Size Bore Inside Convolutions Corroflon Grade (Braid & Cover) PTFE Liner Tube Wall Thickness O/D of Tube, Braid or Rubber Minimum Bend Radius * Maximum Continuous Hose Length; in mm in mm in mm in mm in mm Feet Metres; 1 / 2: 15: 0.440: 11.2: TO SS PB SS,RC RC,SI KYB: 0.05: 1.4: 0.63 0.70 0.80 0.90 0.90 0.76: 16.1 17.8 20.4 22
• “Metal Hose Selection Factors” pages for maximum service temperature of alloys page • “Common Metal Hose Fitting” pages • “Metal Hose Selection Factors” pages for assely life length, motion and vibration. • “Hose Technical Data” pages NOTICE: This Engineering Guide is to assist you in the selection and appliion of
Bend Radii & Minimum Bend Sizes. It is most economical to use a single bend radius throughout the design, but if necessary, you can utilize multiple radii. Use this document to choose values that are both manufacturable and meet your needs. If you need help choosing a value, contact us at [email protected] or 1-866-849-3911 and we can help.
Determining Maximum Bending Moment Drawing V and M diagrams will show us the maximum values for design. Remeer: Determining Maximum Bending Stress For a prismatic meer (constant cross section), the maximum normal stress will occur at the maximum moment. For a non-prismatic meer, the stress varies with the cross section AND the moment.
If velocity exceeds these figures, a metal interlocked liner should be welded into the corrugated assely. Match the liner size to the conveying pipe size and use a larger metal hose assely. If the assely is to be installed in a bent position, reduce the preceding values as follows: 50% for a 90° bend, 25% for a 45° bend, etc.
It has less to do with the stress and fatigue, so it generally has only one limiting radius for all appliions. For corrugated hoses, on the other hand, the limiting radius depends on the stress at the corrugations. For pressure hoses with braided reinforcement, the corrugation stress comes mainly from the bending of the hose.
Hose Master AF5550: Hose Material: T316 Stainless Steel Annular Corrugated Metal Hose: Braid Material: T304 Stainless Steel Single Braid: Burst Pressure: 2,872 PSI: Hose Inside Diameter: 1 In: Minimum Static Bend Radius: 2.1 In: Hose Outside Diameter: 1.53 In: Minimum Dynamic Bend Radius…
Bending radius Coil length Sheet 1 (PN 10/16 bar / 145/232 psi) split flange, e.g. compact conveyor hose systems integral steel flange, concealed attachment, vulcanized in, without lining drawn through integral rubber flange, optional with steel backing flange
The flow velocity in corrugated metal hose should never exceed 150 ft/sec for gas, or 75 ft/sec for liquids. When the hose is installed in a bent condition, these flow values should be reduced proportionally to the degree of the bend. Where the flow velocity exceeds these rates, an interlocked metal hose liner is recommended. Service Life
The hose structure is protected from heat by a fibreglass interlayer and it has a low bend radius. It can be supplied equipped with half-symetrical, threaded or flange fittings along with ADR test certifie. - In Ø 19, Its reinforcement consists of two metal wire spirals.
Hose ID (Inches) Nominal Hose OD (inches) Thickness (inches) Minimum Bend Radius (Inches) Maximum Working Pressure 70 deg F (PSIG) Minimum Bend Radius (Inches) Maximum Working Pressure 70 deg F (PSIG) Burst Pressure 70 deg F (PSIG).75" 1.04: 0.01: 4: 50: N/A: N/A: N/A.75" w/Braid: 1.1: 4: 800: 6: 700: 3200: 1" 1.34: 0.012: 4.5: 50: N/A: N/A: N/A: 1" w/Braid: 1.42: 4.5: …
3. Avoid over bending. The repetitive bending of a hose to a radius smaller than teh radius listed in the specifiion tables for corrugated hose will result in early hose will result in early hose failure. Always provide sufficient length to prevent overbending and to eliminate strain on the hose. 4. Avoid careless handling of the hose assely.
Loose flange metal corrugated hose. Loose flange metal corrugated hoses are mainly composed of bellows, mesh sleeves, flanges and joints. The loose flange is sleeved on the pipe end by using a flange, a steel ring, etc., and the flange can be moved on the pipe end. Steel rings or flanges are the sealing faces, and the flanges act to compress them.
※The maximum working pressure may vary depending on the design conditions. ※1: Pressure at working temperature of 40°C, safety factor of 3 and weld efficiency of 1 Nominal diameter Inner diameter （㎜） Thickness（㎜） Outer diameter （㎜） Min. bending radius （㎜） Max. working pressure (MPa)※1 A B SUS Teflon No braid
To obtain maximum service life from metal hose, some IMPORTANT installation rules must be kept in mind: To minimize possible torque damage to a hose, a union or floating flange should be used at one end of the hose assely. Where flanges are The repetitive bending of a hose to a radius smaller than the radius listed in the
Spiral spring or supporting hose, attached to the metal hose ends to reduce the bending stress at the joints between metal hose and fittings. Protection spiral Elastic spiral over the entire length of the hose assely to protect the metal hose and its braid against mechanical damage.
Hose (Flange Swivels Until Tightened) Temperature Range: 316 Stainless Steel Hose: -325° to 1,200° F. 321 Stainless Steel Hose: -20° to 950° F. Maximum Vacuum: 29" of Hg @ 72° F. Material: 316 Stainless Steel or 321 Stainless Steel. Braided stainless steel construction gives this hose moderate flexibility and makes it tough enough to
= depth of a wide flange section d y = difference in the y direction between an area centroid ( ) and the centroid of the composite shape ( ) DL = shorthand for dead load E = modulus of elasticity or Young’s modulus f b = bending stress f c = compressive stress f max = maximum stress f t = tensile stress f v = shear stress F b = allowable
The bend radius (calculated in a lab environment, appliions may vary) is measured as the distance to the inside edge of the hose (not the center line) when making a 90° bend. When bent at too sharp an angle, the reinforcement may be unduly stressed or distorted, thereby shortening the hose life. Textile reinforced hoses have a tendency to kink as the bend radius is reduced.