Where can I find the dimensions for Snaplock couplings?
You can find general dimensions for Snaplock products on the
Snaplock
page.
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How can I check what materials are compatible with the media I am using?
There is a chemical compatibility guide in the technical resources section of our site.
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What certification is available?
Most products are sold with a Certificate of Conformity as standard. Material certificates and/or DIN 2.1.b certificates can also be supplied on request. DIN 3.1.b certificates can also be provided but this will affect price and delivery and must be requested at the enquiry stage and confirmed when ordering. You should
contact us for any special certification or product test requirements you have.
Certificates of conformity are also available upon request.
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What is the specification for Snaplock couplings?
Cam and groove couplings have traditionally been manufactured to the US Military specification MIL-C-27487. This specification covered the dimensions and machining tolerances, the materials, the closing torque, part numbers, pressure ratings, finish, inspection procedures and packing requirements of the product. Compliance to this specification ensured inter-changeability of parts from different manufacturers.
Only parts manufactured for Defence Ministry applications normally complied in full with MIL-C-27487 in respect of stamping of part numbers, inspection, packaging and anodising. Such products were ordered using the specific MS part numbers within MIL-C-27487. Parts supplied for commercial applications normally only complied with the material, dimensional and pressure parameters of the specification. It should also be noted that only some of the sizes and materials offered were covered by MIL-C-27487.
In recent years, many generic products have been produced which only loosely comply with the specification and where alternative materials, reduced wall thickness and less inspection are provided. This process helps to reduce the cost but it will also adversely affect the life of the product as well as its resistance to some media. In some cases, it can also endanger the operator and/or the environment.
The specification A-A-59326 has replaced MIL-C-27487, a cancellation notice being issued in 1998. The German DIN 2828 standard has been introduced in Europe and there is also a draft CEN standard for cam and groove couplings in existence. Products produced to DIN 2828 are interchangeable with those made to the original MIL-C-27487 but have differences in the hose tail design, thread, part number and other details.
Pro Flow Dynamics offers the following options:
- Snaplock metallic product from 3/4" to 4" in a range of basic configurations, designed to interchange with product manufactured to DIN 2828 or A-A-59326 (previously known as MIL-C-27487) Snaplock product as above but to DIN 2828.
For full details of the product types available, see the
Snaplock pages within this site.
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What is permament mold casting?
The permanent mold casting process is the production of castings by pouring molten metal into permanent metal molds under gravity pressure. Castings produced in permanent molds have finer grain structure and better strength properties than those cast from similar alloys in sandcasting and diecasting. The castings have better dimensional uniformity and in addition, a smooth surface finish is achieved right out of the mold, therefore, eliminating some secondary polishing operations.
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What is investment casting?
The investment casting process begins with the production of a wax pattern with the exact geometry of the finished casting. This pattern is usually made by injecting liquid wax or plastic into a metal die cavity. The ceramic-shell mold-making process starts by dipping the entire wax cluster into a fine ceramic slurry and then coating it with a fine ceramic sand. After the initial coating dries sufficiently, the cluster is dipped into progressively coarser grades of ceramic material. When the shell is between 3/16" and 5/8" thick, it is placed in a heated environment that melts the wax pattern gates, runners, and sprue. The remaining ceramic shell contains dimensionally precise cavities of the casting shape desired.
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