Fitting instructions for Tyton joints

Transcription

1 Fitting instructions for Tyton joints Tyton joint Cleaning the connection point Spigot end up to the marking line Socket inside in particular sealing ring seat and retaining groove Sealing ring Applying lubricant Apply lubricant to the hatched sealing face only. Inserting the sealing ring Clean the sealing ring and fold it so to form a heart. Insert it into the socket such that the outer hard rubber claw sits firmly in the retaining groove. If necessary, make two loops and smoothen them out. The inner edge of the hard rubber sealing ring must not protrude from the centring collar. Applying lubricant Apply a thin film of lubricant to the inserted seal and to the spigot end in particular to the chamfer. Assembling the joint Push the spigot end concentrically and straight into the socket until it touches the sealing ring. The axes of the two joined elements (pipe sections or fittings) must form a straight line. When you are ready, check the sealing ring for firm seat all-round with a feeler gauge. Use the fitting tool to push the spigot end further into the socket until the second marking line is visible only. Feeler gauge Tab 1, page 53

2 Fitting instructions for Tyton joints Tyton joint Offsetting After having assembled the joint, pipe sections can be offset. Tyton Up to DN Offset angle from Shortening pipes If pipes are shortened on the installation site, the cut edges shall be chamfered carefully with a coarse file or hand-held grinder. The chamfer shall have about the same dimension as that of the original spigot end. For radius and distance of marking lines see the table below. DN X Y r Tab 1, page 54

3 Fitting instructions for Tyton joints Dimensions of sockets and accessories Sealing ring Socket of fittings (Shapes A and B) Socket depth t₁ of shape A Socket depth t₂ of shape B²) Nominal length of the pipe section Socket of EU pieces (Shapes A and B) Socket depth t₁ of shape A Socket depth t₂ of shape B²) Nominal length of the EU piece Fittings can be supplied with socket collar, dimension D1 (see TYT pipes). Observe the fitting instructions for Tyton socket joints. Nominal size DN d₁ d₂ Shape A t₁ Shape B²) t₂ Weight¹) of a socket in kg for Permitted Permitted tolerance tolerance ±10 ±10 Fittings EU pieces ¹) Weight calculated based on a density of 7.05 kg/dm³. ²) Shape B permits greater axial offset, so that the actual length of a pipe may differ slightly. Tab 1, page 55

4 Fitting instructions for Tyton SIT /Tyton SIT PLUS joints Tyton SIT /Tyton SIT PLUS joint General instructions When laying pressure pipes and fittings with thrust-resisting joint Tyton SIT and/or TYTON SIT PLUS (TSP ), always observe the Fitting instructions for pressure pipes and fittings with Tyton joints and any special instructions provided by the pressure pipe manufacturer. Tyton SIT sealing and thrust protection rings are available for dimensions DN 80 to DN 400. Tyton SIT PLUS (TSP ) sealing and thrust protection rings are available for dimensions DN 80 to DN 600. Schematic diagram of the joint Tyton SIT TYTON SIT PLUS Tyton SIT ring with stainless steel segments Code ring TSP ring with Code ring stainless steel segments Socket Spigot end Socket Spigot end Marking Tyton SIT Groove in the sealing bead Marking TYTON SIT PLUS Two teeth per stainless steel segment Four teeth per stainless steel segment Tab 1, page 56

5 Fitting instructions for Tyton SIT /Tyton SIT PLUS joints Tyton SIT /Tyton SIT PLUS joint Application Assembling the joint Tyton SIT DN PN Steel segment TYTON SIT PLUS DN PN This thrust-resisting socket joint renders concrete anchoring blocks superfluous. The number of socket joints to be secured this way shall be determined as specified in DVGW standard GW 368. Always contact our customer service before you use these joints in gas pipelines, suspended pipelines or bridge pipelines. 1. Clean the socket and spigot end. 2. Clean the Tyton SIT / TYTON SIT PLUS ring, fold it so to form a heart and insert it into the socket. Note that the inner bend shall be situated between two steel segments (see Fig.). Apply a thin film of lubricant to the inserted sealing ring. 3. Slide the profiled code ring with colour stripe (blue for Tyton SIT and white for TYTON SIT PLUS ) onto the spigot end. 4. Apply a thin film of lubricant to the spigot end in particular to the chamfer and insert it into the socket until it touches the sealing ring. 5. Attach the fitting tool to the socket and spigot end and force the spigot end into the socket. Make sure the spigot is inserted concentrically and straight. Caution! Turning an element in the circumferential direction (e.g. to bring a branch connection into position) shall be avoided; if unavoidable, it is essential that this is done before locking. Tab 1, page 57

6 Fitting instructions for Tyton SIT /Tyton SIT PLUS joints Tyton SIT /Tyton SIT PLUS joint Fitting tool Marking the thrust-resisting joint Locking Tyton SIT Tyton SIT PLUS Forcing the spigot end in by alternately moving the two levers Code ring Caution! Now lock the joint by moving the two levers in opposite directions. When you are ready, check the Tyton SIT / TYTON SIT PLUS ring for firm seat all-round with a feeler gauge. We supply a profiled rubber code ring with colour stripe on the outer shell (blue for Tyton SIT or white for Tyton SIT PLUS ) for permanent marking. The code ring shall be attached as shown in the drawing. Feeler gauge Dismantling the thrust-resisting joint Unlocking tool Note: After assembly of the thrust-resisting joint, the joined elements may be offset by an angle of up to 3. Attach the fitting tool and force the spigot end further in towards the base of the socket, thereby relieving the steel segments. Apply lubricant thinly to either side of the unlocking tools and hammer them into the gap at the socket all-round as far as they will go. Take the joined elements apart with the help of a dismantling clamp or fitting tool. If the unlocking tools cannot be driven in on the entire circumference, then the pipeline must be cut apart. Tab 1, page 58

7 Fitting instructions for SMU joints Screw-gland socket joint Cleaning the connection point Spigot end for a length of about 200 mm Socket inside with Threaded ring scraper, steel brush and hand-brush Marking Attach a distance mark to the pipe spigot with crayon pen to be able to check the insertion depth after assembly. DN Dimension L in mm SMU Applying lubricant Apply plenty of lubricant to the following parts: Assembling the joint Press the sealing ring into its seat in the socket. Tab 1, page 59

8 Fitting instructions for SMU joints Screw-gland socket joint Tightening the threaded ring Tighten the threaded ring with a hammer as far as it will go. Checking Check the correct insertion depth. Only remove the lifting device when the joint is completely assembled. Offsetting The pipe can be offset by an angle of up to 3 after assembly of the joint (1 equals about 6 cm deflection per 1 m pipe length). Tab 1, page 60

9 Fitting instructions for SMU joints Dimensions of sockets and accessories Threaded ring Sliding ring SMU sealing ring Sealing ring 1) Dimensions in mm Weight in kg DN d₁ D t Threaded ring Sealing ring Sliding ring * * * According to factory standard ¹) Rubber seals with polyamide cap or Perbunan (NBR) are supplied for gas pipelines. Observe the fitting instructions for screw-gland socket joints. Application of U and EU pieces as collars. Tab 1, page 61

10 Fitting instructions for self-anchored joints Keula thrust protection for screw-gland socket joints Application Preparation Keula self-anchored joints can be used in pipelines with sizes from DN 80 to DN 400. They are reliable up to a test pressure of 25 bar (DN 80 to DN 300) or 16 bar (DN 350, DN 400). The form-fit connection caused by the wedge-shaped grooves serves to absorb the thrust force caused by the internal pressure and makes an otherwise required concrete anchoring block superfluous. The wedges are nitrided to provide corrosion protection. Pipe or F piece spigot end: Socket inside: Threaded ring: Sealing ring and sliding ring: Wedges: Clean a length of about 200 mm and remove any paint residues. Remove any soiling. Make sure that the pockets in the threaded ring are unclogged. Apply a thin film of DVGW-approved lubricant to the sealing ring and sliding ring. Identical wedges are used for all nominal sizes. DN Number of wedges per joint / / /300/350/400 6 Tab 1, page 62

11 Fitting instructions for self-anchored joints Keula thrust protection for screw-gland socket joints Assembly and dismantling Mount threaded ring (1), sliding ring (2) and sealing ring (3) (in this order) to the spigot end of pipe section or fitting (5) such that the distance (4) to the chamfer is at least 5 mm. Fix the marking (7) in this position. Screw parts 1, 2, 3, 5 and 6 (without wedges) together finger-tight and attach them firmly to the connection points so to adjust the required distance and offset angle (max. 2 to either side). Tighten the threaded ring firmly with a suitable tool and check that the distance to the mark does not exceed 5 mm. Insert the wedges (8) into the pockets of the threaded ring with their tips first and with their teeth facing the pipe. Drive the wedges in all-round against the screwing direction with strong hammer blows (1.5 kg) so that about identical drive-in forces are exerted on opposite wedges. How far they will actually go in depends on the offset angle and nominal size of the fitting (see drawing). Use a hardened punch (size 10 x 15 x 150) if necessary (obligatory for nominal sizes of DN 250 and more). While the wedges are driven in the triple teeth cut into the outer diameter of the pipe, thereby creating the thrust protection. Cut off protruding wedge ends at right angles with an angle grinder. If you turn back the threaded ring the wedges will be released and can be used again. After about 3 4 turns, the joint is released such that the joined elements can be pulled apart and the wedges can be taken out. After having released the joint, you may grip the wedges with multigrip pliers to pull them out. DN 80 to DN 200 min mm Use a punch for DN 250 to DN 400. You may also use a power hammer and special punch (for size see above, force 23 J). Tab 1, page 63

12 Fitting instructions for STO joints Bolted-gland socket joint Cleaning the connection elements Socket inside Spigot end for 200 mm Remove any excess bitumen from the seat of the sealing ring Front contact face of the bolted gland ring Marking Attach a distance mark to the pipe spigot with crayon pen. DN L Assembling the joint Sealing ring Bolted-gland ring Slide the bolted-gland ring and the sealing ring beyond the mark. Insert the spigot end into the socket concentrically and check the insertion depth. Push the sealing ring uniformly into its seat. Do not use lubricants. Tab 1, page 64

13 Fitting instructions for STO joints Bolted-gland socket joint Assembling the joint Push the bolted-gland ring towards the sealing ring and align it with two hardwood wedges which are inserted between gland ring and spigot end on the top side. If the bolted-gland ring is well centred then it will be easy to insert the T-head bolts later. Hardwood wedges Insert the T-head bolts into the bolted-gland flange and bolted-gland ring and treat the T-head bolts and nuts with commercially available bitumen varnish. Screw on the nuts finger-tight. Now tighten the nuts with a ring spanner crosswise by a half to one turn each time. The bolts are sufficiently tightened when the gland ring has been forced at least 6 mm into the sealing ring. The insertion depth after tightening the bolts can be determined by measuring the bolted-gland ring height and the distance from the outer edge of the bolted-gland ring to the sealing ring. The insertion depth should be as uniform as possible for a particular bolted-gland socket joint. Each joint thus requires at least three measurements at different points. Double-check the correct insertion depth. After having assembled the joint, pipe sections can be offset by an angle of up to 3. Steel measuring tape 6 mm Measuring depth Bolted-gland ring height Tab 1, page 65

14 Fitting instructions for STO joints Dimensions of bolted-gland socket joint Bolted-gland ring Sealing ring T-head bolt Socket (narrow hatched) Nominal length (of pipes) Socket joint T-head bolt with Weight in kg hexagon nut Bolted- T-head Nominal Pipe Fitting gland Sealing bolts size Dimensions in mm Qty. Dimensions in mm socket socket ring ring (total) DN d₁ D t₁ t₂ b k n d₂ l M M M M M M M M Bolts and nuts are included in the delivery. Observe the fitting instructions for bolted-gland socket joints. Tab 1, page 66

15 Fitting instructions for FF joints Flange-to-flange joint General Tightening torque of the bolts of flanged joints with rubber gaskets The torque depends on the sealing material, the nominal size DN and the nominal line pressure PN. It can be calculated with the help of the following equations: MDPN 10 = DN/30 da Nm MDPN 25 = DN/10 da Nm MDPN 16 = DN/15 da Nm MDPN 40 = DN/ 5 da Nm (1 da Nm 1 kpm) Position of the bolt holes in flanged fittings Generally, bolt holes in flanges shall be positioned such that they do not lie in a plane perpendicular to the plane of the pipeline. Due to the different number of bolt holes at the two ends of FFR pieces, upstream and downstream elements may lie twisted when such a piece is mounted wrongly. Tab 1, page 67

16 Fitting instructions for FF joints Flange dimensions according to DIN EN (PN 10) Nominal Dimensions in mm size Flange Sealing face Bolts Weight¹) DN d₁ D b k d₄ f Qty. Thread d₂ in kg M M M M M M M M M M M M M M M M M M M M ¹) Weight of the narrow hatched part Flanged pressure pipes and flanged fittings DN 80 PN 10 can be supplied with four bolt holes on request. Tab 1, page 68

17 Fitting instructions for FF joints Flange dimensions according to DIN EN (PN 16) Nominal Dimensions in mm size Flange Sealing face Bolts Weight¹) DN d₁ D b k d₄ f Qty. Thread d₂ in kg M M M M M M M M M M M M M M M M M M M M ¹) Weight of the narrow hatched part PN 10 and PN 16 fl anges up to DN150 have identical dimensions. Tab 1, page 69

18 Fitting instructions for FF joints Flange dimensions according to DIN EN (PN 25) Nominal Dimensions in mm size Flange Sealing face Bolts Weight¹) DN d₁ D b k d₄ f Qty. Thread d₂ in kg M M M M M M M M M M M M M M M M M M M M ¹) Weight of the narrow hatched part Tab 1, page 70

19 Fitting instructions for FF joints Flange dimensions according to DIN EN (PN 40) Nominal Dimensions in mm size Flange Sealing face Bolts Weight¹) DN d₁ D b k d₄ f Qty. Thread d₂ in kg M M M M M M M M M M M M M M ¹) Weight of the narrow hatched part Tab 1, page 71

20 Fitting instructions for FF joints Dimensions of flanges and accessories Number of bolts 4 holes 8 holes 12 holes 16 holes Number of bolts Nominal size DN PN 10 PN 16 PN 25 PN Each flange has a number of bolt holes that can be divided by four. In all flanges, these holes are arranged such that they are symmetrical and bisect the angles of the two major geometrical axes. The scope of supply of accessories for flanged joint shall be agreed upon in the supply contract. Tab 1, page 72

21 Fitting instructions for FF joints Dimensions of flanges and accessories Flange gaskets Nominal size Dimensions in mm Nominal pressure range DN d₂ d₁ b PN Tab 1, page 73

22 Fitting instructions for FF joints Dimensions of flanges and accessories Bolt connections (According to DIN 601) For PN 10 For PN 16 For PN 25 For PN 40 Nominal l in mm l in mm l in mm l in mm size Flange pairing DN d GCI GCI SGCI d GCI GCI SGCI d GCI SGCI d GCI SGCI GCI SGCI SGCI GCI SGCI SGCI SGCI SGCI SGCI SGCI M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M The scope of supply of accessories for flanged joint shall be agreed upon in the supply contract. SGCI Thickness of flange made of ductile cast iron GCI Thickness of flange made of grey cast iron } Flange pairing Tab 1, page 74