What is instantaneous coupling?

The instantaneous coupling system comprises of a male and female two part connection which are held securely in position by two internal spring loaded plunger mechanisms. The hose tails have a double rib arrangement which facilitate wire binding or hose clamps.

What is Storz coupling?

Storz is a type of hose coupling invented by Carl August Guido Storz in 1882 and patented in Switzerland in 1890, and patented in the U.S. in 1893 that connects using interlocking hooks and flanges. It was first specified in standard FEN 301-316, and has been used by German fire brigades since 1933.

What is BS336?

BS336 ‘Instantaneous’ fire hose couplings are the standard low pressure fire hose fitting for UK fire brigades and all fire related installations. BS336 Instantaneous fire couplings are also used by utility companies and contractors who obtain water from mains hydrants.

What is NH pipe thread?

NH stands for National Hose and NST stands for National Standard Thread. This is often referred to as “fire hose thread” because fire departments use it the most. It’s popular on many fire hydrants and accessories. Garden hose thread (GHT) is also referred to as NH.

Who makes camlock fittings?

Camlock fittings are one of Seal Fast’s specialties as an industry-leading manufacturer of valves, couplings, fittings, and PVC hoses.

What is fire hose coupling?

Hose couplings are used to connect one hose to another and increase overall length of a fire hose. They are attached to each end of a length of fire hose. Hose couplings are also used to connect hose to appliances like hydrants, wyes, and Siamese connections.

Are all camlock fittings the same?

Camlock fittings come in a variety of different materials which means that it is easy to select the material that will provide the most durability for each specific project or use. Quick to use: Camlock fittings are designed to be used quickly to connect or disconnect hoses or pipes from each other.

What is Type A Camlock?

Type A stainless steel camlock couplings have male adaptors & female threads of the same size. The male grooved end can be inserted into any female couplers such as Type D, B, C & Dust Cap with identical size. Various gaskets are provided.

What are two types of couplings used in fire service?

There are three types of hose couplings, including threaded couplings, storz-type couplings, and non-symmetrical quick connect couplings. Threaded couplings are one of the commonly used in the fire service. They are a male/female set designed for use on most fire hose up to 3 inch in diameter.

Is NH and nst the same?

NST also goes by the initials NH or National Hose. It can even be referred to as NHT or National Hose Thread but NST or NH is more common these days. NH = NST. Fire hoses with National Pipe Straight Hose Thread (NPSH) has the same threads per inch as National Pipe Thread (NPT) but the threads do not taper.

Is NST and NPT the same?

What is the notch on couplings called?

The raised ridges on the body of the male and the swivel of the female are known as rocker lugs. These lugs are engaged with spanners to tighten and loosen the couplings. The notch on the lugs is called a higbee notch or higbee cut (I have also seen it spelled higby).

What does R mean in thread?

R = External tapered screw pipe thread for fits made on the thread per ISO-7 & BS-21. Per the standard the R mates with the Rc and Rp, but will also mate with the G. Rc = internal tapered threads for fits made on the thread per ISO-7 & BS-21. Per the standard Rc mates with R. .

What is R thread?

These are parallel threads (BSPP), which have a constant diameter, which are known a G threads, and taper threads (BSPT), whose diameter increases or decreases along the length of the thread, known as R threads.

Do camlock fittings leak?

Camlock fittings are widely used in every industry to provide quick bonding between pipes and hoses. They are economical and don’t need any additional tools to deal with. Their male adapter and female coupler mating provide a quick leak-free seal.