CONTROL BUTTERFLY VALVES 2 PIPE FLAP VALVES 6 EXHAUS HEADS 9 RAIN BAFFLES 12 DAMPING PADS 15 AUTOMATIC FLAPS 18 ROUND CANOPIES 21 CAGI HEADS 24 COVER

Transcription

1 CONTROL BUTTERFLY VALVES 2 PIPE FLAP VALVES 6 EXHAUS HEADS 9 RAIN BAFFLES 12 DAMPING PADS 15 AUTOMATIC FLAPS 18 ROUND CANOPIES 21 CAGI HEADS 24 COVER GRILLES 27 CONTROL DAMPERS 30 SQUARE AND ROUND PIPING 33

2 Product overview TPA1 CONTROL BUTTERFLY VALVES TPA 2 PIPE FLAP VALVES TPA 3 EXHAUST HEADS TPA 4 RAIN BAFFLES TPA 5 DAMPING PADS TPA 6 AUTOMATIC FLAPS TPA 7 ROUND CANOPIES TPA 8 CAGI HEADS TPA 9 COVER GRILLES TPA 10 CONTROL DAMPERS TPA 11 PIPING

3 Control butterfly valve CONTROL BUTTERFLY VALVES

4 Control butterfly valve Use: The control butterfly valve (V-RK) is used to change the pressure and volume air currents in the piping and in air-conditioning units, in combination with a rain baffle for the regulation of air flow to the room. Product description: The control butterfly valve is composed of hollow aluminum strips turned by means of a geared mechanism. They are connected by means of pins into a framework. The control can be automatic with a servo drive or manual by means of a lever. The servo drive or lever is installed directly to the shaft of the control butterfly valve by means of a universal clamp. The operating angle is set by means of a mechanical stop. Technical parameters: Mark: V RK AxB/L, control (R,SM,S) V BOKA s.r.o. producer RK control butterfly valve A width [mm], Table 2 B height [mm], Table 2 L length [mm] L=160mm Control: R manual, fig. 1 SM with servo drive + type, fig. 2 Make S as SM without delivery of the servo drive. If no type of control is specified in the order, the control is deemed to be manual. If the order party has no specific requirement regarding the servo drive, the type is set by the producer. Servo drives produced by Belimo are delivered by default, Table 1. More detailed technical parameters of servo drives are available with suppliers or at BOKA s.r.o. Table 1: Basic technical parameters of servo drives:. Type Torsional moment Feeding Effective area of the valve Location signaling Belimo NM Nm 230 V Up to 1,35 m 2 yes/no Belimo SM Nm 230 V More than 1,35 m 2 yes/no Belimo AM Nm 230/24 V Up to 3,6 m 2 yes/no Fig. 1 Manual control Fig. 2 Servo drive control

5 Control butterfly valve Table 2. Nominal dimensions range A, B Atypical dimensions can be produced at the request of the customer. Materials used: The cover and flange profiles of the control butterfly valve are made of zinc coated sheet steel, the profiled control blades are made of aluminum. The pins and gear wheels are made of PVC. Installation: The butterfly valve is mounted and demounted like the other forms of the air duct. Ordering: The following has to be specified in the order: a) Mark b) number of pieces Examples of orders: V-RK 500x630 3pcs. manual control V-RK 200x400, SM 5 pcs. servo drive control V-RK 200x400, S 10 pcs. make as with a servo drive without delivery of the servo drive Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The control butterfly valve is delivered assembled. The servo drive is delivered in packaging. Packaging, transport and storage: The control butterfly valve is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend to store the valve in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer.

6 PIPE FLAP VALVES

7 Pipe flap valve Use: The pipe flap valve (V-KP) is used to readjust the air flow in square cut and round piping. Product description: The pipe flap valve (KP) consists of a control blade, pins and a control butterfly valve holder. The valve is controlled manually by default or using a servo drive at the request of the customer. The operating angle is set by a mechanical stop. Technical parameters: Označenie: Mark: V KP AxB/L, control (R, SM, S) V KP ØD/L, control (R, SM, S) Square cut valve Round valve V BOKA s.r.o. producer KP control butterfly valve A width [mm], Table 2 B height [mm], Table 2 ØD average [mm] Table 3 L length [mm] If no other length is required, valves with L=250 mm are produced by default. Control: R manual, fig. 1 SM with a servo drive + type, fig. 2 Make S as SM without delivery of the servo drive. Ak na objednávke nie je uvedený typ ovládania, považuje sa za ovládanie ručné. If no type of control is specified in the order, the control is deemed to be manual. If the order party has no specific requirement regarding the servo drive, the type is set by the producer. Servo drives produced by Belimo are delivered by default, Table 1. More detailed technical parameters of servo drives are available with suppliers or at BOKA s.r.o. Table 1: Basic technical parameters of servo drives Type Torsional moment Feeding Location signaling Belimo LM230 4Nm 230V no Belimo LM230-S 4Nm 230V yes Table 2: Nominal dimensions range A, B

8 Pipe flap valve Table 3: Nominal dimensions range ØD Atypical dimensions can be produced at the request of the customer. Materials used: The cover, flange profiles and the control blades of the control butterfly valve are made of zinc coated sheet steel. The pins are made of PVC. Installation: The butterfly valve is mounted and demounted like the other forms of the air duct. Ordering: The following has to be specified in the order: a) mark b) number of pieces Example of orders: V-KP 400x500 2pcs. length L=250, manual control V-KP 200x400, S 5pcs. length L=300, control as with a servo drive, without delivery of the servo drive V-KP 125/300, SM 3pcs. ØD=125, length L=300, control as with a servo drive, without delivery of the servo drive Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The pipe flap valve is delivered assembled. The servo drive is delivered in packaging. Packaging, transport and storage: The valve is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend to store the valve in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer

9 EXHAUST HEADS

10 Exhaust head Use: The exhaust head (V-VH) is used in group I round pipings at the exhaust equipment. It terminates the vertical delivery duct in free space. It ensures that no rain water flows into the piping it ensures that contaminants be exhausted to the free space as high as possible. Product description: The exhaust head consists of a case, an insert and a socket. The case in the form of truncated cones is connected with the socket by means of screws and raising pieces, which create a slit for the run-off of rain water that has fallen inside. A cone-shaped insert with a canopy, connected with the case by means of riveted ribs, is situated inside the case. The canopy is extended by o=2cm to prevent water from getting into the piping. Technical parameters: Mark: V VHØd, joint (P, NA) V BOKA s.r.o. producer VH exhaust head Ø d piping diameter [mm], Table 1 Ø D case diameter [mm], Table 1 Ø d1 exhaust opening diameter [mm], Table 1 L length [mm], Table 1 joints flange (P) or topping (NA). By default, the exhaust head is produced with a flange. If the order does not contain the type of joint, it is considered to be a joint with flange. Table 1 Dimensions range Ø d Ø D Ød L Ø d Ø D Ø d L Atypical dimensions can be produced at the request of the customer. Materials used: The whole exhaust head is made of zinc coated sheet steel. To achieve strength, the flange is an angle flange, the dimensions have been set by the producer according to the dimensions of the head. The flange has been painted by one rust-inhibitive primer.

11 Exhaust head Installation: The exhaust head is mounted and demounted like the other forms of the air duct. Ordering: The following has to be specified in the order: a) mark b) number of pieces Order example: V-VH 250 pcs. Ø d=250, angle flange V-VH 315, NA 3 pcs. Ø d=250, topping Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The head exhaust is delivered assembled. Packaging, transport and storage: The exhaust head is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend to store the exhaust head in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer.

12 RAIN BAFFLES

13 Rain baffle Use: The rain baffle (V-PŽA) is used to prevent rain from leaking into the suction opening in the vertical plane or to direct the air current. It also esthetically covers the opening of the piping. Product description: The baffle is composed of a profile frame; individual profile blades forming the infilling panel. A metallic zinccoated screen is inserted in the piping to prevent fouling. Depending on the way of installation, the baffle is produced with a wall frame or a piping frame. Technical parameters: Mark: V PŽA P AxB, S, R, P V BOKA s.r.o. producer PŽA rain baffle P industrial (zinc-coated sheet) A width [mm], Table 1 S baffle with a screen, default delivery without a screen R wall frame If there is no R mark, it is considered a piping frame P make without a kicking plate, if there is no P mark, i tis considered a baffle with plate Table 1 Nominal dimensions range A, B Atypical dimensions can be produced at the request of the customer. Materials used: The whole industrial rain baffle is made of zinc coated sheet steel. The covering screen is made of galvanized steel wire. Installation: The rain baffle is mounted at the end of the piping. It is attached by riveting or by self-drilling screws. It is sealed by means of putty or an aluminum tape. A frame is used to fix the baffle in the wall. Ordering: The following has to be specified in the order: a) mark b) numer of pieces Order example: V-PŽA-P 400x pcs. with a piping frame, without screen V-PŽA-P 500x630, S, R 3 pcs. with a screen, with a wall frame

14 Rain baffle Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The rain baffle is delivered assembled. Packaging, transport and storage: The exhaust head is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend storing the rain baffle in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer

15 DAMPING PADS

16 Damping pad Use: The damping pad (A-TV) is used to limit the transmission of vibration and noise in the ventilation and airconditioning system. Damping pads are most frequently used at the inlet and outlet of air-conditioning units or independent fans. Product description: The damping pad consists of two profile flanges connected by gummed cloth. Technical parameters: mark: A TV AxB A TV ØD V BOKA s.r.o. producer TV damping pad A width [mm], Table 1 B height [mm], Table 1 Ø D diameter [mm], Table 2 L length [mm], Lmin=100, Lmax=170, depending on the semi-products. Not specified Table 1 Nominal dimensions range A, B Table 2 Nominal dimensions range Ø D Atypical dimensions can be produced at the request of the customer. Materials used: The damping pad is made of galvanized steel profiles. The pad is made of a gummed textile cloth. Surface treatment: The damping pad is made of galvanized material without surface treatment. The gummed cloth is blue. Other surface treatment can be produced by agreement with the producer.

17 Damping pad Installation: The damping pad is mounted between the piping parts. Care has to be taken during the mounting that the cloth not be stretched or squeezed after the pad has been assembled, so that no mechanical damage is incurred. The stiffener is removed before the installation. Ordering: The following has to be specified in the order: a) mark b) number of pieces Order example: V-VH 400x pcs. square-cut V-VH 250 3ks round Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The damping pad is delivered assembled. Stiffeners are used to secure the position of the two flanges. They prevent mechanical damage to the gummed textile cloth. Packaging, transport and storage: The damping pad is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend to store the damping pad in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer.

18 AUTOMATIC FLAPS

19 Automatic flap Use: The automatic flap (V SK) is used for automatic equalization of the pressure difference in two neighboring rooms. Depending on the type of the flap, they automatically open either by means of overpressure or low pressure. Product description: The automatic flap consists of a profile frame, profile blades loosely put on wire pins and of a piping frame or wall frame. A metallic galvanized screen is inserted into the piping at the request of the customer. Technical parameters: Mark: V SK AxB, type, S, R, PR V SK ØD, type, S, R, PR V BOKA s.r.o. producer SK automatic flap A width [mm], Table 1 B height [mm], Table 1 Ø D piping diameter [mm], Table 2 Type I. or II., type I. is produced by default S flap with a screen, it is delivered without screen by default R wall fastening frame, a piping frame is installed by default PR topping with a flange Table 1 Nominal dimensions range A, B A partition is inserted into the flap from dimension A=630 onwards. Table 2 Nominal dimensions range Ø D Atypical dimensions can be produced at the request of the customer.

20 Automatic flap Materials used: The automatic flap is made of zinc coated sheet steel, the blades are of aluminum profiles and the pins are made of steel wire. Installation: The automatic flap is mounted at the end of the piping, in the wall or on a fan. It is attached by riveting or by self-drilling screws. It is sealed by means of putty or an aluminum tape. A frame is used to fix the baffle in the wall. Ordering: The following has to be specified in the order: a) mark b) number of pieces Order example: V-SK 400x pcs. square-cut, type L, with a piping frame, without screen V-SK 630, II, S, R 3 pcs. round topping with a screen, type II., with a wall frame Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The automatic flap is delivered assembled. Packaging, transport and storage: The automatic flap is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend to store the automatic flap in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer.

21 ROUND CANOPIES

22 Round canopy Use: The round canopy (V-KS) is used to prevent rain and snow from getting into the piping. It is located on vertical piping. Product description: The round canopy is composed of a round cover and a canopy fixed by stiffeners. The stiffeners are welded to the flange. The connection to the air duct is done either by means of a flange or by means of a round topping. Technical parameters: Označenie: V KS Ød, joints (P, NA) V BOKA s.r.o. producer KS automatic flap Ø d piping diameter [mm], Table 1 Ø D canopy diameter [mm], Table 1 L topping length [mm], Table 1 H head height [mm], Table 1 Joints flange (P) or topping (NA). By default, the round canopy is produced with a flange. If the order does not contain the joint type, it is considered a joint with flange. Table 1 Dimensions range Ø d Ø D L H Ø d Ø D L H Atypical dimensions can be produced at the request of the customer.

23 Round canopy Installation: The round canopy is mounted and demounted like the other forms of the air duct. Ordering: The following has to be specified in the order: a) mark b) number of pieces Order example: V-SK 250 pcs. Ød=250, flange V-SK 315, NA 3 pcs. Ød=315, topping Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The round canopy is delivered assembled. Packaging, transport and storage: The round canopy is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend to store the round canopy in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer.

24 CAGI HEADS

25 CAGI head Use: The CAGI head is inserted into roof constructions or into exhaust piping, where it automatic ventilation is expected as a result of pressure differences and wind. It is guaranteed that no rain water will leak into the piping. The head is place in such a way that it is exposed to the action of wind pressure. Product description: The CAGI head is composed of a case, an insert and a socket. The cylindrical case is connected with a conic socket by means of ribs. The canopy is also fixed on the ribs. Technical parameters: Označenie: V HC Ød, joints (P,NA) V BOKA s.r.o. producer HC CAGI head Ø d piping diameter [mm], Table 1 Ø D external case [mm], Table 1 H head height [mm], Table 1 L topping length [mm], Table 1 joints flange (P) or topping (NA). By default, the CAGI head is produced with a flange. If the order does not contain the type of joint, the joint is considered to be a joint with flange. Table 1 Dimensions range Ø d Ø D L H H Ø d Ø D L H H Atypical dimensions can be produced at the request of the customer.

26 CAGI head Materials used: The whole CAGI head is made of zinc coated sheet steel, without surface treatment. The ribs are made of steel sheet. Installation: The CAGI head is mounted and demounted like the other forms of the air duct. Ordering: The following has to be specified in the order: a) mark b) number of pieces Order example: V-VH 250 pcs. Ø d=250, flange V-VH 315, NA 3 pcs. Ø d=315, topping Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The CAGI head is delivered assembled. Packaging, transport and storage: The CAGI head is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend to store the CAGI head in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer.

27 COVER GRILLES

28 COVER GRILLES Use: The cover grille (A-KM) protects the external inlet and exhaust openings of the ventilation and air-conditioning systems from pollution. It can be wall-fixed or piping-fixed. It covers the opening esthetically. Product description: The cover grille filling is formed by a perforated grid. It is inserted between the outer profile frame and an inner frame. Depending on the way of installation, the grille is produced with a piping frame or with a wall frame. Technical parameters: Mark: V KM AxB, R V KM ØD, R V BOKA s.r.o. producer KM cover grille A width [mm], Table 1 B height [mm], Table 1 ØD piping diameter [mm], Table 2 R wall frame. If the mark is not R, the frame is considered to be a piping frame Table 1 Nominal dimensions range Table 2 Nominal dimension ØD range Atypical dimensions can be produced at the request of the customer. Materials used: The outer frame and the inner frame are made of zinc coated sheet steel without surface treatment. By request, the grille can be made of galvanized wire or of perforated sheet. The openings are square-cut, usually 10x10mm. Installation: The cover grille is attached by riveting or using self-drilling screws. A seal or an aluminum tape is used to increase tightness. It is inserted to the masonry together with a fastening frame.

29 COVER GRILLES Ordering: The following has to be specified in the order: a) Mark b) Number of pieces Order example: V-KM 315x pcs. squared with a piping frame V-KM 315, R 3 pcs. Ød =315, with a wall frame Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is is provided by the producer. The cover grille is delivered assembled. Packaging, transport and storage: The cover grille is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend storing the cover grille in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer.

30 CONTROL DAMPERS

31 CONTROL DAMPERS Use: The control damper (V-PR) is used to choke the cross section or to close the round socket of the exhausting system piping. It is not dustproof. Product description: The control damper consists of a base plate and a sliding plate and of attach flanges. The set position is secured by screwing a wing nut. Technical parameters: Označenie: V RP Ød, joints (P, NA) V BOKA s.r.o. producer RP- control damper Ød piping diameter [mm], Table 1 Š damper width [mm], Table 1 L closed position length [mm], Table 1 L1 opened position length [mm], Table 1 Joints flange (P) or topping (NA). The damper is produced with a flange by default. If the joint type is not stated in the order, the joint is considered a joint with flange. Table 1 Dimensions range Ød L L Š Ød L L Š Atypical dimensions can be produced at the request of the customer. Used materials: The control damper is made of zinc coated sheet steel without surfacing. Installation: The control damper is mounting and dismantling just like the other forms of air-conditioning manifold. The seal or aluminum tape is used to increase the tightness. Control damper

32 CONTROL DAMPERS Ordering: It is necessary to state in the order form: a) labeling b) quantity Order example: V-RP 250 pcs. Ød=250, flange V-RP 315, NA 3pcs. Ød=315, topping Acceptance and delivery: Acceptance is performed according to generally binding regulations. The completeness inspection of the product is provided by the producer. The control damper is delivered assembled. Packaging, transport and storage: The control damper is delivered unpacked. Transportation is done by usual means of transport at the expense of the buyer. We recommend to store the control damper in covered and dry premises. Addendum: All deviations from these technical specifications have to be discussed with the producer.

33 SQUARE AND ROUND PIPING

34 Piping Use and operating parameters: Group 1 air ducts are designed for ventilation, air-conditioning and air exhaust without mechanical and abrasive impurities and without corrosive, aggressive gases and vapors. The maximum operating temperature is 80 C. The maximum flow-rate is 12m/s. The allowed static differential pressure ranges from 1000 Pa to 2500 Pa. Air ducts for the transport of toxic or explosive media are delivered under special technical specifications in compliance with customer requirements based on technical negotiations. Product description: Ventilation and air-conditioning square and round piping under these technical specifications stands for direct pipes, shaped pieces (adapting pieces) and pipe shapes uniformly connected to them. The nomenclature of the individual shapes complies with the standard STN These technical specifications tie in with the company standard ON for group 1 squared and round steel piping. Technical parameters: 1. Dimensions and the dimensions marking. The nominal dimension is the inner cross section dimension. The nominal dimension of square piping is marked by capital letters AxB. The nominal dimension of round piping is marked by a capital letter diameter ØD. Adherence to these marks is necessary for setting the correct dimension of typified shape. The nominal dimensions according to Table 1 are used preferentially. Table 1: Nominal dimensions range As for the bends, the inner rounding radius R is usually stated. Bends up to a nominal dimension of 800 have an R=150, for a nominal dimension of more than 800 they have an R=250. Requests for other radiuses have to be negotiated. Bends are produced with an roundness angle α from 15 to 90, graded per 15. The piping length is marked by the capital letter L. The piping is made in lengths ranging from 400 to 2000 mm, graded per 10 mm. The use of the dimensions range is not obligatory for the length of direct pieces. 2. Material The piping is commonly made of bilaterally zinc coated sheet. It is possible to make it of black or aluminum sheet, if needed. The sheet type is prescribed by the first additional digit following the ON ,X, labeling according to Table 2. Table2: Sheet types Type Standard Quality Additional digit (.X) Black steel sheet STN Zinc coated steel sheet STN Aluminum sheet STN Pipelines made of aluminum sheet are produced with flange joints.

35 Piping 1. Pressure operation Tab. 3: Pressure operation Low-pressure High-pressure Maximum pressure differential Δp 1000 Pa 2500 Pa 2. Wall thickness dimensions The minimum wall thickness depends on the longer side of the pipeline cross section and on the pressure operation as stated in Table 4. Tab. 4: Side length Minimum sheet thickness Operation to 1000 Pa Operation to 2500 Pa ,6 0, ,7 0, ,8 0, , ,1 More than ,1 1,1 A stiffener is used when the side length is above Joint types The profiled rim P20 and P 30 manifold linking. The flange profiles and piping walls are fixed by means of a non-dismountable joint by mutual overpressing of the flange profile or by point welding, by riveting using a maximum spacing of 100. A dismountable connection by means of self-drilling screws is used for the mounting. A stick-on seal is inserted between the flange profiles during the mounting. Figure 1 Figure 1. A picture of the the set and a sectional view of the joint. The profiled flange consists of a flange profile and an angle iron - Figure 2.

36 Piping Figure 2. Angle irons and flange profiles The profile area size depends on the length of the piping section side. Table 5. Table 5: Allocation of flange profile to side lengths Maximal side length Maximum pressure differential Operation to 1000 Pa Operation to 2500 Pa P20 P P20 P P30 P30 More than 1600 P30 P30 The profile flanges are connected by an M8 screw joint for P20 and by an M10 for P30. The corner areas are sealed by acrylate cement for a maximum operating temperature of 80 C, and up to 450 C in the case of the special make with silicone cement. In the case of side lengths above 400 mm, clamping clips are used to prevent a flange from sagging are used. Figure 3. Mark of the joint The joint type is laid down in the mark behind the nominal dimension. It is marked by the parameter K (Ki). Connecting using a profile flange is used preferentially and there is no need to mark it. If no information is stated behind the nominal dimension,the joint is considered to be a P20 or P30 and is determined in accordance with the Table 5. Figure 3 Clamping clip for flange profiles Pipe with a free flange. The joint enables to shorten the piping to the appropriate length only during installation. The flange is delivered together with the piping. The flange is put on the free end after the shortening. Then it is filled up with cement and fastened with self-drilling screws. Figure 4. Mark of the pipe with a free flange The joint type is laid down in the mark behind the nominal dimension. It is marked by the parameter K (Ki). The mark of the free flange is VP Figure 4 Free flange

37 Piping Unflanged pipe The piping end is smooth and even (Figure 5) and it is used for the attachment of a rain baffle. Mark of the unflanged bar The joint type is laid down in the mark behind the nominal dimension. It is marked by the parameter K (Ki). The mark of the unflanged bar is BP. Blinded end The piping end has an airproof blinding flange. Figure 6 Blinded end Mark of the blinded end The joint type is laid down in the mark behind the nominal dimension. It is marked by the parameter K (Ki). The mark of the unflanged bar is ZSL. 4. Tolerances The nominal dimensions tolerances are specified in Table 6. Table 6: Nominal dimensions tolerances Maximum dimension Tolerance ± ± ±1, ± ±2,5 More than 1600 ±3 The length tolerance for all of the mounting distances of the piping is ±5mm, unless prescribed otherwise. The angular tolerances for bends are ±1.

38 Piping 1.Piping tightness The air ducts are delivered in two tightness classes- TT A and TT B. TT A- standard make for common tightness requirements, without additional transverse and longitudinal fringes. For example dressing rooms, garages, workshops, gyms, offices. TT A special make for increased tightness requirements with additional transverse and longitudinal fringes, if the piping has to be dustproof. For instance hospital rooms clean areas. TT B- The whole piping is cemented for the highest tightness requirements. For instance nuclear and isotopic areas. The dependence of the relative leakage flow rate Vs on the pressure differential Δp implies that the relative leakage flow rate within the scope of applicable pressures depending on the construction of the piping is given by the values in table 6. Table 6: Relative leakage flow rate Maximum pressure differential Relative leakage flow rate Operation to 1000Pa Operation to 2500Pa TT A TT B V s [m 3 /s.m 2 ] 0, , Piping weight Is calculated as the product of the piping wall volume [dm 3 ] and of the mass density ρ=7,85kg/ dm3 + weight of the flanges. The weight of flanges is 0,50kg/m for P20 and 0,753kg/m for P Surface treatment The piping made of zinc coated and aluminum sheet, including the VP,BP,ZASL joints, is uncoated. The point welding spots are painted with color S 2013 ( grey or silver tone). The surface treatment of black steel piping consist of a single rust-inhibitive primer. 4. Abnormal make Requests for an abnormal make, i.e. different sheet quality, requests for another or for multiple paint, for soldering, sealing etc., always have to be discussed with the producer in advance. 5. Make of the piping The external piping surface is transversely profiled with 120 mm spacing. Stiffening is done according to individual needs. The sheet joint is flanged by longitudinal fringes or, if needed, by angle or standing fringes. The connection between the pipe and the flange is implemented by overpressing or point welding. If the customer does not request a specific joint type, the joint type is defined by the producer. 6. Allowed adjustments to the piping. The designer can define the below mentioned adjustments to the pipe, S-bend and square transitions as follows (he also has to mark their position in the design): a) Adjustment for the installation of square toppings the toppings are inserted to the openings in the piping and are secured by rivets or point welding after flanging. The section areas of ventilation grill toppings depend on the size of the ventilation grille. If the designer requests tapered sheets, he has to

39 Piping mark them in the design. The radiuses R are the same as in the case of a pipe with a topping (see technical annex 18.(B)). The ventilation grilles are attached only during the installation. b) Adjustment for the installation of round toppings the round cross-section topping is secured against axial shift by a fringe and is flanged after being put on the piping. The topping is usually without a flange. If there is a flange, it is usually marked according to chapter 8. c) Adjustment for the installation of an inspection hole this adjustment is performed immediately during the production. One hole is placed on each wall of the installation part of the piping 7. Security The air duct parts have to be permanently connected to each other during the installation in accordance with STN and STN Two joint spots are used for a conductive connection - by means of 4 fanshaped washers on each joint (STN ). The air duct is not protected against fire spread in accordance with STN article Testing and acceptance The air duct is not tested. The producer is liable for the implementation and applicability according to these technical conditions. It is necessary to discuss a request for acceptance by the buyer with the piping producer and to place a special order. Individual air duct parts are marked according to design positions. 9. Packaging and transport The air duct is delivered unpacked. It is necessary to negotiate a request for packaging with the producer and to place a special order. Air ducts have to be transported so as to prevent damage to them and their deformation. The producer is not liable for damages incurred during transportation. The complete installation material screw, seal, spare angle irons and slats - is part of the delivery. The installation material is delivered in packaging. The producer is not liable for the damages incurred due to inappropriate storage. 10. Installation The complete installation material screws, nuts, washers, a Vitolen 120 insulation, an aluminum tape, spare angle irons, slats, clamping clips and accessories is also part of the delivery. The installation material is delivered in packaging. List of accessories: - zinc-coated sleeves of round piping hanger - hanging piping elements: slats, racks - V,L,Z shaped hangers - threaded rods, threaded sockets, lifting loops, rubber seals, dowels. Before installation, it is checked if the parts have not been damaged by transportation or storage. The individual parts must not be deformed, mechanically damaged or contaminated. The installation must be carried out by a professional firm. If the designer prescribes so, a tightness test has to be carried out in accordance with the appropriate standard after the installation. The installation is performed according to the design. A Vitolen 120 stick-on insulation is inserted between the individual piping forms; the screwing together and the use of the clamping clip result from the figures of chapter 8.1. The piping is suspended under the

40 Piping ceiling on threaded rods, if possible. The threaded rod is screwed into a dowel depending on the ceiling type. The piping is connected to the rod by a V,L or Z shaped hanger riveted or screwed to the piping wall. The threaded rod is terminated by a rubber seal, dowel and nut. Addendum BOKA s.r.o. also produces piping in makes, which are different from these technical specifications in accordance with the delivered design documents. Unless the order requests otherwise, the documentation will be adjusted for the production conditions of the supplier. Ordering: The following has to be specified in the order: a) mark b) number of pieces The marking differs for each shape. It is shown in the technical annex in article 18. Order example: OBL - 200x315/500/90 /150, K2 VP 2 pcs. bend with a pipe, the K2 end has a free flange, the flange is connected to the pipe RU x500/500, K1 BP 2 pcs. pipe, the K1 end has no flange. We send a piping ordering program on request.

41 Piping 18. Name and mark of basic piping shapes TECHNICAL ANNEX A) DIRECT BARS RU B) TOPPINGS NA Nadstavce The toppings are attached to the pipes by means of connectors and are secured by rivets after hammering. The toppings are produced in two sizes. For the cross-section axb =710x710 and less, the following specifications are allowed: R=100 and l=125. The topping for all types of cross-sections can have R=190 and l=190, meaning that there are two possible toppings for up to a cross-section of 710x710.

42 Piping The x, z dimensions (position of the opening) are set in the design. When projecting, care has to be take that dimension x be at least 70 mm from the end of the pipe and dimension y at least 20 mm from the pipe edge. This also applies to the other shapes having toppings. C) BLENDS OBL Bends are produced with the angles α=30,45,60,75, and 90. bends with α=15 are not recommended as independent pieces). The inner rounding radius is R=150 for an A dimension of <800 and R=250 for the A dimension of >800. Bends from A=630 and α=90 have a guide sheet in one third of the A. A pipe with a bend is produced only up to the maximum dimensions A=630, B=800, L=950. It is substituted by independent elements (pipe and bend) when the sections and lengths are bigger. D) ELBOWS KO The sharp elbows have guide plates

43 Piping E) BRANCHINGS RB Guide plates and choke valves or taper sheets are placed in branchings and branches in accordance with the designer instruction. The flow direction is highlighted on sharp elbows, branchings and branches with the guide plates by means of colour. F) BRANCHES OB

44 Piping G) OFFSETS OS H) REDUCERS PR

45 Piping