Types Hose clamp

1 types

1.1 screw/band (worm gear) clamps
1.2 spring clamps
1.3 wire clamps
1.4 ear clamps
1.5 other methods

types

many types available, including :

screw/band (worm gear) clamps

screw clamps consist of galvanized or stainless steel band screw thread pattern has been cut or pressed. 1 end of band contains captive screw. clamp put around hose or tube connected, loose end being fed narrow space between band , captive screw. when screw turned, acts worm drive pulling threads of band, causing band tighten around hose (or when screwed opposite direction, loosen). screw clamps used hoses 1/2 inch diameter , up, other clamps used smaller hoses.

pairs of screw clamps on short rubber tube form no-hub band, used attaching sections of domestic wastewater piping, or used other pipes flexible coupler (to fix alignment difficulties or prevent pipe breakage due relative movement of sections) or emergency repair.

they can used in similar way, simple means transmission of small amounts of power. short length of hose clipped between 2 shafts vibration or variations in alignment may taken flexibility of hose. technique adapted use mock-ups in development laboratory.

this type of clamp invented in 1921 ex royal navy commander, lumley robinson, founded l. robinson & co (gillingham) ltd., business in gillingham, kent. company owns trademark jubilee clip.

a similar type of clamp screw band, solid screw, marman clamp.

spring clamps

a pair of spring clamps, intended use on automotive fuel lines

spring clamps typically made strip of spring steel, cut 1 side has narrow protrusion centered on end, , other side pair of narrow protrusions on either side. ends of these protrusions bent outwards, , strip rolled form ring, protruding tabs intermeshing. use clamp, exposed tabs pressed towards each other (typically using pliers), increasing diameter of ring, , clamp slid onto hose, past portion go onto barb. hose fit onto barb, clamp expanded again, slid onto portion of hose on barb, released, compressing hose onto barb. clamps of design used high pressures or large hoses, require unwieldy amounts of steel generate enough clamping force, , impossible work using hand tools. commonly used on automotive cooling system hoses several inches in diameter, example on water-cooled volkswagen automobiles.

spring clamps particularly suited confined or otherwise awkward places other clip types require tightening tools applied narrow , possibly inaccessible angles. has made them particularly popular applications such automotive engine bays , securing barb connections in pc water-cooling.

a simple spring clamp, used on automotive vacuum hose subaru of america

another type of spring clamp, typically used on vacuum hoses, piece of spring steel wire bent loop, ends curled provide handles. these used similar standard spring clamps, pinched hand, , provide little clamping force. rather attempting seal hose barb, place slight pressure on hose, helping keep sliding off barb.

a (somewhat dirty , overtightened) wire clamp, used on automotive radiator hose subaru of america


wire clamps

wire clamps consist of piece of heavy wire, typically made of steel, first bent tight u, formed ring shape 1 end overlapping other, , ends bent outwards , cut. captive nut attached 1 end, , captive screw attached other end. when screw tightened, overlapped ends of wire pushed apart, tightening wire loop around hose. explanation of why design used, see section on sealing connection.

ear clamps

ear clamps consist of band (usually stainless steel) 1 or more “ears” or closing elements have been formed. clamp placed on end of hose or tube connected , when each ear closed @ base of ear special pincer tool, permanently deforms, pulling band, , causing band tighten around hose. size of clamp should chosen such ear(s) closed on installation.

other features of style of clamp include: narrow band widths, intended provide concentrated compression of hose or tube; , tamper resistance, due permanent deformation of clamp’s “ear”. if closure of clamp “ear(s)” performed manufacturer s recommendations, provide constant jaw force, sealing effect not unduly sensitive component tolerance variations.

some such clamps feature dimples intended provide spring effect when diameter of hose or tube contracts or expands due thermal or mechanical effects.

a stepless type of ear clamp invented hans oetiker in horgen, switzerland, eliminates steps or gaps on inner circumference of clamp. said provide uniform compression , 360° seal. such stepless clamps claimed suited applications involving thin-walled hoses, supposedly higher retained loads. suggests should considered difficult seal applications such molded plastics or other less malleable materials, commonly used in automotive industry.

other methods

many other methods can used attach hoses or tubing, such compression fittings (where nylon or soft metal ferrule compressed onto hose tightening of fitting), push-fit fittings (where hose inserted inside of compression sleeve, designed such force against hose causes sleeve tighten), swage fittings (where stiff collar compressed onto hose), clamp fittings (where 2 blocks tightened onto sides of hose, found on garden hoses), crimp banding (similar worm gear banding crimp used instead of screw/thread), , multitude of others. however, these devices not typically referred hose clamps.