Crown Acoustic Products: Crown Pipe Insulation

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Crown Acoustic Materials: Crown Pipe Insulation

Below you will find information on specific products within our range. To ensure that you purchase the correct products to suit your requirements we recommend that, you contact one of our qualified customer focused advisors, who will be only too pleased to help. Please call 08451 306 269 or email us for a quote or advice.

Crown Pipe Insulation

Short Description

Crown Pipe Insulation is a one-piece 'snap on' pre-formed mineral wool section of 80 kg/m³ nominal density. It is made from shot-free non-combustible glass mineral wool. Crown Pipe Insulation is faced with a bright class 'O' facing of reinforced aluminium foil with a self-adhesive overlap. Various other finishes may be applied to meet specification requirements.

Crown Pipe Insulation

Application

Pipework insulated with Crown Pipe Insulation. Finish of either bright aluminium foil, canvas, polyisobutylene, sheet metal etc.

The HVAC section sets out the most common recommended pipework finishes for a range of applications.

Operating temperatures

Crown Pipe Insulation may be used on pipework at continuous operating temperatures up to 230°C and may be used down to below ambient temperatures provided that a 100% vapour barrier is maintained. The surface temperature of the product should not exceed 80°C.

Thermal performance

Crown Pipe Insulation has one of the lowest thermal conductivities of any mineral wool pipe section and complies with the requirements of the Building Regulations for pipe insulation. The thermal conductivity varies with temperature in accordance with the following table:

Performance standard	Result
10	0.031
50	0.035
100	0.042
150	0.050

Fire performance

Crown Pipe Insulation base glass mineral wool is non-combustible to BS 476: Part 4: 1970 (1984). The bright foil facing complies with the class 'O' requirements of the Building Regulations when tested to BS 476: Part 6: 1989 and Part 7: 1997.

Acoustic performance

Where there is a need to reduce radiated noise levels from pipework, Crown Pipe Insulation provides effective control. The actual performance varies with insulation thickness and surface finish.

As an example, 100mm thickness of Crown Pipe Insulation under 20 swg mild steel gives an average reduction of over 31 dB and 50mm thickness of insulation gives a reduction of 28 dB. Particular care is required to seal joints and avoid bridging to achieve the best results.

Vapour and condensation

Crown Pipe Insulation will help to prevent condensation and protect pipework from freezing when applied in thicknesses as recommended in BS 5422: 1990 and shown in the table below:

	Insulation thickness (mm)
O/d of copper pipe	Indoor installation where freezing might occur	Outdoor installation within scope of BS 5422
22	25	-
28	25	30
35	25	25
42	25	25
54	25	25
76	25	25
89	25	25

Notes:

Insulation alone will not prevent static water in pipes from freezing; it will however delay the onset of freezing. The table shows extracts from BS 5422: 1990.
The thicknesses are based on a low emissivity outer surface (ambient 25ºC, 80% RH). Bright Class ‘O’ foil is a low emissivity surface

Chloride content

Crown Pipe Insulation contains inherently low levels of chlorides and high levels of stress corrosion inhibitors in the form of sodium ions and silicate ions.

Chlorides are common to most environments and can be deposited on the surface of the insulation from the air or even from operatives' hands. In the presence of water the chlorides can migrate through the insulation and be concentrated on the insulated surface thus increasing the risk of stress corrosion cracking of austenitic stainless steels.

The water resistance of Crown Pipe Insulation helps prevent this migration whilst its natural inhibitors afford additional protection.

Installation

For details on the installation of Crown Pipe Insulation, please refer to the relevant solution page.

Other Advantages

Corrosion free
No thermal bridging
No deterioration of performance over time
Speed of installation
Form and dimensions

Crown Pipe Insulation is available as one-piece snap-on tubes, 1200mm long throughout the range.

Product Data

Crown Pipe Insulation - Steel Pipes
The Crown Pipe Insulation sizes below reflect the most common sizes of steel pipes used to comply with BS 1387 and BS 3601-5.

Product Specification			Packaging Details
Product Specification			Per Box	Insulation Wall Thickness
Pipe Bore (mm)	Pipe Bore (ins)	Pipe o/d (mm)	Per Box	20mm	25mm	30mm	40mm	50mm
250	10	273	Lin m	–	–	–	1.2	–
250	10	273	Sections	–	–	–	1	–
200	8	219	Lin m	–	–	4.8*	1.2	1.2
200	8	219	Sections	–	–	4*	1	1
150	6	168	Lin m	–	6.0*	6.0*	4.8*	4.8*
150	6	168	Sections	–	5*	5*	4*	4*
125	5	140	Lin m	–	9.6*	7.2*	6.0*	–
125	5	140	Sections	–	8*	6*	5*	–
100	4	114	Lin m	–	4.8	4.8	4.8	7.2*
100	4	114	Sections	–	4	4	4	6*
80	3	89	Lin m	–	7.2	6.0	4.8	10.8*
80	3	89	Sections	–	6	5	4	9*
65	2.5	76	Lin m	–	10.8	7.2	6.0	4.8
65	2.5	76	Sections	–	9	6	5	4
50	2	60	Lin m	15.6	12.0	10.8	7.2	4.8
50	2	60	Sections	13	10	9	6	4
40	1.5	48	Lin m	21.6	15.6	12.0	10.8	–
40	1.5	48	Sections	18	13	10	9	–
32	1.25	42	Lin m	24.0	19.2	14.4	10.8	–
32	1.25	42	Sections	20	16	12	9	–
25	1	34	Lin m	30.0	24.0	15.6	10.8	–
25	1	34	Sections	25	20	13	9	–
20	3/4	27	Lin m	36.0	30.0	19.2	14.4	–
20	3/4	27	Sections	30	25	16	12	–
15	1/2	21	Lin m	50.4	32.4	24.0	–	–
15	1/2	21	Sections	42	27	20	–	–
Key	Linear metres per box
	No. of sections per box
	Except where indicated products come in boxes 390x390x1200mm
	*Products come in boxes 570x570x1200mm

Standard section length is 1200mm

Crown Pipe Insulation - Copper Pipes
The Crown Pipe Insulation sizes below reflect the most common sizes of light gauge copper pipes used to comply with BS 2871.

Product Specification			Packaging Details
Product Specification			Per Box	Insulation Wall Thickness
Pipe Bore (mm)	Pipe Bore (ins)	Pipe o/d (mm)	Per Box	20mm	25mm	30mm	40mm
100	4	108	Lin m	–	6.0	–	–
100	4	108	Sections	–	5	–	–
65	2.5	67	Lin m	–	10.8	10.8	–
65	2.5	67	Sections	–	9	9	–
50	2	54	Lin m	19.2	14.4	10.8	7.2
50	2	54	Sections	16	12	9	6
14	0.5	15	Lin m	58.8	38.4	24.0	–
14	0.5	15	Sections	49	32	20	–
Key	Linear metres per box
	No. of sections per box
	Except where indicated products come in boxes 390x390x1200mm

Standard section length is 1200mm