Typical expansion ratios are about 50:1, i.e. a 1mm thick coating will expand to about 50mm when affected by fire. Detailed guidance on the specifiion and installation of site applied, thin film intumescent coatings is available from the Association for Specialist Fire Protection  .
Pipe Joining Expansion Joints Style 155 Expansion Joint Style 155 Expansion Joint Coination of couplings and short nipples, joined in tandem to provide increased expansion Style 155 grooved expansion joints are rated to the working pressure of the coupling Puhui Pipe manufacturer in China
6" Pipe, Neoprene Double Arch Pipe Expansion Joint 9" Long, 1-1/8" Extension, 2" Compression, 225 Max psi, Flanged MSC# 00451336 Unisource Mfg. (302-600) In Stock
Water Mains with no Fire Fighting Capability • DN63 PE (or other DN50 equivalent) pipe in cul-de-sacs which must be able to be covered for fire emergencies by hydrants on adjacent mains.
The Tefbellows is an expansion joint that coines the properties of metal and PTFE into the most advanced expansion joint available for highly corrosive piping systems. Normal design temperatures are from -300F to +400F, and they will retain their pressure carrying capacity up to 1,200F in an upset condition, sufficient time for system shut-down and replacement.
Water is at its highest density at 3.98 C = 1000 kg/m 3 or 1 g/cm 3. The correct SI unit of density of water is ρ = 1000 kg/m 3. [also FYI, 1 m 3 = 1,000,000 cm 3] Specific weight of water = 62.4 lb/ft 3 (IU) or 9.81 kN/m 3 Specific weight of seawater = 64 lb/ft 3 (IU) or 10.1 kN/m 3 - must be all that extra salt making it more dense, so we float better in seawater than in fresh water, right?
Expansion Joint A joint that absorbs axial displacement of pipework caused by changes in temperature, lateral displacement and angular displacement. Fire Service The pipes and fittings in premises, and any pipes and fittings between the premises
Multiply the total expansion of each line between its proposed anchors by the pipe’s moment of inertia (E). (The stiffness of a line is measured by its “Moment of inertia.”) The line with the largest of these calculated nuers will require the largest loop, the next smaller nuer, the next smaller loop, etc.
1/11/2012· This expansion can either be directed to a specific loion (i.e. expansion joint) by anchoring the pipe away from the joint and allowing it to expand/move in the direction of the joint, or by allowing the pipe to move throughout its length in both directions.
How To Deal With Thermal Pipe Expansion and … When an expansion joint is being used, consideration must be given to the pressure in the pipe. For example, a standard 200NB pipe with axial bellows creates over 2.5 tons of force. The pipe is kept aligned but
EXPANSION LOOP SIZES FOR HDPE PIPE EXPANSION LOOP SIZES FOR COPPER TUBING Expansion loops are sized for A53 Grade B ERW HDPE pipe allowable stresses. PIPE SIZE (IN) 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 ΔL (IN) 0.00 - 1.50 1.50 - 6
ALLOWABLE PIPE SIZE, CLASS AND MATERIALS FOR WATER MAINS Water Mains with no Fire Fighting Capability • DN63 PE (or other DN50 equivalent) pipe in cul-de-sacs which must be able to be covered for fire emergencies by hydrants on adjacent mains.
Hydraulic expansion is the direct appliion of high internal pressure within a tube or sleeve in order to form a tight joint between the tube and tube sheet or a tight seal between the sleeve and tube. Two processes are used to accomplish such expansions:
4 Reference standards NFPA 20, 2013 (Fire Pumps), Paragraph 4.28 NFPA 13, 2013 (Sprinkler Systems), Paragraph 9.3 NFPA 22, 2008 (Water Tanks), Paragraphs 4.11.4, 5.3, 6.3 for Water-Based Fire Protection Systems) Factory Mutual Datasheet 2
Expansion loops and offsets should be constructed with straight pipe and 90 elbows, which are solvent cemented together. If threaded pipe is used in the rest of the system, it is still recommended that expansion loops and offsets be constructed with solvent cement to allow the mechanisms to better handle the bending stresses incurred during expansion and contraction.
Standard cut grooved pipe will provide double the expansion/contraction or deflection capabilities of the same size standard roll groove pipe. The angular deflection available at a Victaulic flexible grooved pipe joint is useful in simplifying and speeding installation.
MNLC Bellows Expansion Joint Metal bellows expansion joint provides perfect balance between value and performance • Low corrugation • Shorter face/face dim • High temperature appliions • Max working pressure: 50-300 psi • Max temperature: 800º • Full