Therefore, the application and its environment must be taken into consideration for proper hose selection. The information and tables are standards published by the rma rubber manufacturers association handbook for molded parts. Rma is a memberdriven, resultsoriented, focused service organization which creates value for its members by addressing. Hose to be pressure tested must be restrained by placing steel rods or straps close to each end and at approximate 10 foot 3 m intervals along its length to keep the hose from whipping if failure occurs. Hose handbook march 2003 hose fittings hydraulic hoses. Rma handbook download this book provides design requirements standards for rubber products. These amendments are effective upon approval and until obsoleted. It includes new copies that may be purchased on the nahad website and an update pack for any existing copies. Reprinted with permission from the rubber manufacturers association rma hose handbook, rmaip 22003. Oct 26, 2018 as noted in absa information bulletin, ib4, which references csa b5109 clause 8. Information obtained from rma hose handbook ip2 1987. Information obtained from rma hose handbook ip2 1987 nahad 500 2005.
The nahad hose safety institute handbook for the design and specification of hose. Rma rubber manufacturers association rma ip2 the rma hose handbook ulc underwriters laboratories of canada canulcs603. Chapter 1 molded rubber products purpose and scope summaryand examples of rma drawing designations molded rubber products table 1 summary of rma drawing designations 3. Nahad creates the hose safety institute to formalize the work of driving safety, quality and reliability of hose assemblies. The hose assembly guidelines are updated and republished as the hose safety institute handbook. The rubber manufacturers association is a manufacturing trade association of more than 120 corporate members which produce finished rubber and tpe products. All other types of rubber hose designs that are not in accordance with rubber manufacturers association rma ip2, such as those that are based on different design code requirements e. In handling gasoline and other petroleumbased liquids, recognized national associations and companies have conflicting opinions on the need for conductive.
Refer to rma ip115, welding hose, precautions for the selection and use of. The radius is measured to the inside of the curvature. This is the radius to which the hose can be bent in service without damage or appreciably shortening its life. Handbook revision task force acadia elastomers corporation. Reprinted from rma hose handbook ip2 sixth edition 1996. The purpose of this handbook is to provide a method for standardizing design requirements for molded rubber products. Rma classification, the rubber samples are immersed in irm 903 oil at 100. The table below shows the 4 classes that are used by rma. Interpretation rubber hose assemblies manufactured in. The handbook has 324 pages, 93 charts and 319 photos and images.
Drafted and maintained by committees of technical professionals from leading domestic manufacturers, this technical publication offers engineering specifications and standards, testing procedures and common manufacturing practices for a wide array of finished hose products. A typical industrial hose is dragged, coiled, run over, kinked and subjected to all kinds of wear and tear as well as abuse. The rubber manufacturers association gratefully acknowledges the efforts and approval of the following companies in the publication of this 6th edition of the rma rubber handbook. It is intended to serve as a guide for the use, care. Air should be removed from the hose by bleeding it through an outlet valve while the hose is being filled with the test medium. Rma tolerances tables rubber manufacturers association. Rma tolerances tables the rubber manufacturers association rma has developed tolerance tables with ranges to provide communication between user and provider across a wide range of industries. Application selection guide sae j30r2 covers coupled and uncoupled synthetic rubber tube and cover hose. Materials updated and all 7 specification manuals plus design guides for industrial. Rma tolerances for molded rubber products using the industry standard callouts for rubber tolerancing is good practice and provides for a common understanding between the design engineer and the manufacturer. This handbook replaces the fcic18190 general standards handbook, dated december 15, 2017. Users of welding hose are urged to communicate their service conditions to the hose manufacturer and obtain the best recommendation of the manufacturer for a hose suitable for those conditions. This handbook gives easytouse guidelines and compiles all relevant information in one place.
Risk management agency product administration and standards division fcic 18010 062018 2019 crop insurance handbook underwriting and actual production history standards for fcic programs administered under the aph administrative regulations and the basic provisions for the common crop insurance and area risk protection. You can also consult the rma article on factors affecting tolerances of molded rubber products. See astm method d471 for a detailed description of the oil and the testing procedure. The specified pressure, which is normally the proof pressure, is applied and immediate measurement of the characteristics desired are taken and recorded. Hydraulic piping standard handbook is intended for professionals working within industries where hydraulic piping is used. The value connection in industrial hose 39496000 january 2005 industrial hose productslist prices. Bleed hoses when not in use for 30 minutes or longer.
Manufacturers arpm, hose handbook, rmaip22003 arpm has replaced rma hose physical properties after exposure to oil volume tensile change strength classification max. This table is abstracted from the rma hose handbook. Rma tolerances tables rubber manufacturers association vicone. Asme, astm, asq, ul, iso, sae, rma and others which relate to hoses and. Testing can be dangerous and should be done only by trained personnel using proper tools and procedures. Hose testing methods reprinted from rma hose handbook ip2 sixth edition 1996 safety warning. Detailed information concerning storage, care and maintenance may be found in the hose handbook published by the rubber manufacturers as. Manufacturers association is a manufacturing trade association of more than. Extremeflex petroleum transfer an extremely flexible and lightweight hose for. As a guide to the user of hose in contact with oil, the oil resistance classes and a corresponding description are listed. Hose assembly inspection guidance lanl engineering standards. An inspection and hydrostatic test should be made at periodic intervals. Rma simply refers to the rma mo1 specification as the controlling document for the tolerance designation. Hbdthermoid produces durable, topquality hose products with lots of valueadded features.
This handbook has been compiled to provide authoritative information on materials, constructions, tolerances, applications, fittings, storage, care, and maintenance of hose. Chemical recommendations 2 reprinted with permission from the rubber manufacturers association rma hose handbook, rmaip 22003 chemical recommendations. River bend xwtransfer systems, llc conversion factor aow of straightsmooth gallons 25 75 100 200 145. Hose handbook 7321 shadeland station way, suite 285, indianapolis, in. Novaflex recommends the use of assembly guide lines as published by nahad hose. According to rubber manufacturers association rma hose handbook ip2 1987. This is the tightest tolerance classification and indicates a high precision. Hose with obvious damage should be scrapped and replaced. Chapter 1 molded rubber products purpose and scope summaryand examples of rma drawing designations molded rubber products table 1 summary of rma drawing designations 3 rma mo1 2005. Classes determine the fixed and closure dimensional tolerances for products molded in solid rubber. These inspections should include tube and cover conditions, leaking or slipped couplings and proof test. Reprinted with permission from the rubber manufacturers association rma hose handbook, rmaip22003.
December, 2019 this handbook has been compiled to provide authoritative information on materials, constructions, tolerances, applications, fittings, storage, care, and maintenance of hose. Mo1 the rma rubber handbook for molded, extruded, lathe. The arpm hose handbook has been compiled to provide authoritative information on materials. Flexibility bend radius reprinted from rma hose handbook ip2 fourth edition formula to determine minimum hose length given bend radius and. Handbook revision task force acadia elastomers corporation ashtabula rubber company chardon rubber company custom rubber corporation federalmogul corporation. Throughout handbook added or vfr wherever bfr was referenced.
These are helpful when designing and producing a part. All new industrial rubber hoses are to be hydrostatically tested to 2 times 200%. The rubber manufacturers association rma, now known as the us tire manufacturers association has published the rma handbook. As noted in absa information bulletin, ib4, which references csa b5109 clause 8. This handbook was written by the rma hose technical committee. Reprinted with permission from the rubber manufacturers association rma. The rubber manufacturers association rma has developed tolerance tables with ranges to provide communication between user and provider across a wide range of industries. Reprinted from rma hose handbook ip2 sixth edition 1996 safety warning. Reprinted with permission from the rubber manufacturers association rma hose handbook, rmaip22003 technical information hose construction a hose is a reinforced, flexible conduit used to move materials from one point to another or to transmit energy. Lanl engineering standards manual std 342 100 chapter 17. Rubber manufacturers association rma quality standard vicone.
It is no longer available as an individual publication. Selection of the proper hose and materials will increase hose life, improve performance and ensure safety. An inspection and preventive maintenance program for. All hoses should be visually, externally inspected prior to each use and thoroughly inspected prior to 12 months. This handbook offers relevant information in one package for anyone installing or using nonwelded hydraulic piping systems. Electrical engineers differ in opinion on the effects of static electricity and the means of dissipating it. The concure continuous manufacturing process was invented, developed and patented by. Rma hose handbook chapter 8 chemical recommendations for general. Rma class a msha up throuqh 112 only standard air hose machined brass with serrated shank, nptf threads on hex solid male and on hex solid female and npsm threads on hex swivel female.
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