| The Holedall system is a method of attaching couplings to hose utilizing a draw type progressive swage. The patented Holedall couplings include a Holedall stem and a specially engineered ferrule. The hydraulic swaging of the coupling to the hose is accomplished by pushing the ferrule through a die which reduces the ferrule O. D. The ferrule penetrates the hose wall, providing a 360º uninterrupted compression band around the hose. A special hydraulic ram called a Mulcoram is the only piece of machinery necessary to accomplish the coupling. Available in three different sizes - 25, 50 and 100 ton - these rams will accommodate dies and pushers of various sizes so that hoses up to 10" in diameter may be coupled. This multi-purpose, high pressure coupling system requires no bolts and results in a clean coupling with no protrusions. The swaging operation is fast and hose of various lengths and different styles can be coupled. Ease of operation, flexibility and economy make the Holedall method an unequalled assembly system. For almost half a century, Holedall couplings have provided long-lasting efficiency and safety unmatched by any other industrial hose fitting. Couplings are available in stainless steel and carbon steel. Couplings are furnished with pipe thread, plain end for welding, grooved or flanged ends. The Holedall coupling - the most adaptable coupling available. |
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| Holedall stems and ferrules are specifically designed to be used together as a coupling system. Due to differences in dimensions and tolerances for safety reasons, do not use other manufacturer's stems or ferrules with Holedall products! |
| Designed for hose I. D.'s from 1-¼" to 10". The ferrule size depends on the hose O. D. Consult the table further down on this page for the selection of the correct ferrule. Stems are supplied in plated carbon steel and 316 stainless steel. For higher working pressure applications, use Long style Stems & Ferrules. |
| Male Pipe Threads (NPT) ![]() |
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| Beveled End (For Welding) ![]() |
| Grooved End![]() |
Long Style Carbon Steel Stems |
| Male NPT | Beveled End | Grooved End | Hose I.D. & Pipe Size |
|---|---|---|---|
| TML20 | TPL20 | TGL20 | 1-¼" |
| TML24 | TPL24 | TGL24 | 1-½" |
| TML32 | TPL32 | TGL32 | 2" |
| TML40 | TPL40 | TGL40 | 2-½" |
| TML48 | TPL48 | TGL48 | 3" |
| TML64 | TPL64 | TGL64 | 4" |
| TML80 | TPL80 | TGL80 | 5" |
| TML96 | TPL96 | TGL96 | 6" |
| TML128 | TPL128 | TGL128 | 8" |
| TML160 | TPL160 | TGL160 | 10" |
The selection of ferrules is very important to achieve the proper coupling-to-hose assembly.
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| F & FL - 1-¼" to 5" (2 holes) ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| F & FL - 6" to 10" (6 holes) ![]() | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| For use with thin wall hose. These specially designed carbon steel ferrules have serrations on the outside and are for use with Styles TM, TP and TG stems shown above. * 4" takes special stem, TM64-42 shown above. | |||||||||||||||||||||||||||
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| Light Duty 304 stainless ferrules for use with standard length stems such as the TMR series. Consult the Tampa Rubber Customer Service Department for die recommendations. See our page on Holedall Recommended Pressure Ratings for specific pressure recommendations. | ||||||||||||||||||||||||||||||||
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| Stem Part Number | Ferrule Part Number | Hose I. D. | Hose O. D. Range | |
|---|---|---|---|---|
| From: | To: | |||
| RST150NOS | GAS2334NOS | 1-½" | 1-60/64" | 2-12/64" |
| GAS2370NOS | 2-4/64" | 2-22/64" | ||
| RST200NOS | GAS2709NOS | 2" | 2-30/64" | 2-44/64" |
| GAS2885NOS | 2-42/64" | 2-54/64" | ||
| RST300NOS | GAS3760NOS | 3" | 3-30/64" | 3-46/64" |
| GAS3885NOS | 3-47/64" | 3-54/64" | ||
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| Fixed Flange | Floating Flange | Hose I. D. | Hose O. D. Range | |||
|---|---|---|---|---|---|---|
| Carbon Steel | Stainless Steel | Carbon Steel | Stainless Steel | From: | To: | |
| 32P1SO15 | R32P1SOR15 | 32P1LJ15 | R32P1LJR15 | 2" | 2-36/64" | 2-40/64" |
| 32P2SO15 | R32P2SOR15 | 32P2LJ15 | R32P2LJR15 | 2-41/64" | 2-48/64" | |
| 32P3SO15 | R32P3SOR15 | 32P3LJ15 | R32P3LJR15 | 2-49/64" | 2-56/64" | |
| 48P1SO15 | R48P1SOR15 | 48P1LJ15 | R48P1LJR15 | 3" | 3-36/64" | 3-40/64" |
| 48P2SO15 | R48P2SOR15 | 48P2LJ15 | R48P2LJR15 | 3-41/64" | 3-48/64" | |
| 48P3SO15 | R48P3SOR15 | 48P3LJ15 | R48P3LJR15 | 3-49/64" | 3-56/64" | |
| 64P1SO15 | R64P1SOR15 | 64P1LJ15 | R64P1LJR15 | 4" | 4-40/64" | 4-44/64" |
| 64P2SO15 | R64P2SOR15 | 64P2LJ15 | R64P2LJR15 | 4-45/64" | 4-52/64" | |
| 64P3SO15 | R64P3SOR15 | 64P3LJ15 | R64P3LJR15 | 4-53/64" | 4-60/64" | |
| 96P1SO15 | R96P1SOR15 | 96P1LJ15 | R96P1LJR15 | 6" | 7" | 7-4/64" |
| 96P2SO15 | R96P2SOR15 | 96P2LJ15 | R96P2LJR15 | 7-5/64" | 7-12/64" | |
| 96P3SO15 | R96P3SOR15 | 96P3LJ15 | R96P3LJR15 | 7-13/64" | 7-20/64" | |
| 128P1SO15 | - | 128P1LJ15 | - | 8" | 9-20/64" | 9-24/64" |
| 128P2SO15 | - | 128P2LJ15 | - | 9-25/64" | 9-32/64" | |
| 128P3SO15 | - | 128P3LJ15 | - | 9-33/64" | 9-40/64" | |
![]() | Designed for smaller hose systems, these couplings may be used for hose I. D.'s of ¼" to 1" and come complete with factory assembled stem and ferrule combination.
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| These couplings are for services requiring a fitting which will withstand extremely high pressure (up to 3,000 PSI) and severe operating conditions, such as on small and medium size drilling rigs, used for slim hole, core drill, workover, seismograph, water well, blast or shot holes, etc. These extra long, rugged fittings are machined from seamless pipe and tubing with specially designed serrations. The mating ferrules are machined from heavy wall material incorporating matching serrations and rows of set screws for better coupling retention. These couplings are shipped with matching ferrules. Please provide the hose O.D. when ordering for properly sized ferrule. Make sure both ends of the hose are measured for O.D. Must be swaged with the 50 Ton or 100 Ton Ram. |
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| * An accurate hose O.D. must be provided to complete the part number and to insure proper retention. | |||||||||||||||||
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| The LM fittings are sold as a complete coupling, including stem and ferrule. | |||||||||||||||||
| API size and NPT are interchangeable. | |||||||||||||||||