Stainless Steel 3 Piece Ball Valve Plain

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Useful Information

Technical Specification

  • Material: Stainless Steel
  • Connection: Socket Weld Ends
  • Sizes Available: 1/4" - 3"
  • Pressure Rating:
    • 1/4" to 1": 82 bar
    • 1 1/4" to 1 1/2": 69 bar
    • 2" to 3": 62 bar
  • Operating Temperature: -25°C to +200°C
  • Bore: Reduced Bore
  • Features: ATEX approval and locking device.

Description

This stainless steel three-piece ball valve is fitted with socket weld ends, making it particularly well suited to high-pressure and high-temperature pipework systems where a permanent, leak-free connection is required. The socket weld configuration provides a strong, reliable joint and is commonly specified in process industries such as oil and gas, chemical processing, and power generation. The three-piece body construction offers a significant maintenance advantage, allowing the central valve body to be removed from the pipeline for inspection, cleaning, or ball replacement without disturbing the welded end connections, keeping downtime to a minimum.

Constructed with a CF8M stainless steel body and stainless steel 316 ball and stem, it delivers excellent corrosion resistance and consistent performance under demanding conditions. The full-bore design ensures maximum flow capacity, minimising pressure drop across the valve. PTFE seals throughout provide low-friction, chemically resistant operation across a working temperature range of -25°C to +200°C. The integrated locking lever prevents inadvertent operation, adding an additional layer of safety in critical installations. ATEX approved, this valve is also suitable for use in potentially explosive atmospheres. Available in ten sizes from 1/4" to 3".

Typical Applications

Key Features & Benefits

  • Socket Weld Ends: Provides a strong, permanent, leak-free connection, making this valve ideal for high-pressure and high-temperature pipework systems in demanding process industries.
  • Three-piece Construction: The central body can be removed from the pipeline without disturbing the welded end connections, enabling straightforward in-line maintenance, cleaning, and ball replacement with minimal downtime.
  • ATEX Approved: Certified for use in potentially explosive atmospheres, making this valve suitable for hazardous industrial environments.
  • Full-bore Design: Unrestricted flow path minimises pressure drop and accommodates pipeline pigging where required.
  • PTFE Seals: Low-friction, chemically resistant sealing throughout ensures long service life and reliable shut-off performance.
  • Locking Lever: Integrated locking device prevents unintended valve operation, enhancing safety in critical or high-risk applications.

Pressure & Temperature Relationship

Pressure & Temperature Relationship GraphPressure & Temperature Relationship Graph

Dimensions & Materials

Technical Drawing GraphTechnical Drawing Graph
Part Description Material
1 Body Stainless Steel (CF8M)
2 Ball Seat R-PTFE (15%)
3 Ball Stainless Steel (316)
4 Body Gasket PTFE
5 Cap Stainless Steel (CF8M)
6 Spring Washer Stainless Steel (304)
7 Nut Stainless Steel (304)
8 Bolt Stainless Steel (304)
9 Stem Stainless Steel (316)
10 Thrust Washer PTFE
11 Stem Packing PTFE
12 Gland Nut Stainless Steel (304)
13 Handle Stainless Steel (304)
14  Spring Washer Stainless Steel (304)
15 Nut Stainless Steel (304)
16 Lock Device Stainless Steel (304)
17 Handle Cover Plastic
Product Code DN (") D (mm) P (mm) L (mm) H (mm) W (mm) Torque Kv Weight (kg)
353805 1/4 14.0 10 50 51 105 4 6.43 0.37
353806 3/8 17.6 10 60 51 105 4 15.71 0.37
353807 1/2 21.7 10 75 53 118 5 26.19 0.52
353808 3/4 27.3 13 80 60 118 8 34.42 0.71
353809 1 34.1 13 90 75 150 10 53.87 1.01
353810 1 1/4 42.8 13 110 80 150 14 78.56 1.72
353811 1 1/2 48.7 13 120 88 182 18 127.20 2.33
353812 2 61.0 16 140 95 182 25 205.16 3.75
353813 2 1/2 77.0 16 185 121 254 48 379.35 7.63
353814 3 90.0 16 205 135 254 75 677.14 11.75

Downloads

Product DatasheetProduct Datasheet
Product Datasheet

IMPORTANT: The technical data given on this website is for preliminary information purposes only and is published without guarantee. All line drawings are for illustrative purposes only and should not be regarded as wholly accurate in every detail. We reserve the right to withdraw or to alter the specification of any product without notice. For more information, please consult our Terms of Business.

If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.

 

Grouped product items
Code Product Name List Price You Save You Pay Quantity
353815 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 1/4" £28.39 50%
You Pay:  £14.20
353816 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 3/8" £29.40 50%
You Pay:  £14.70
353817 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 1/2" £36.49 50%
You Pay:  £18.25
353818 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 3/4" £53.22 50%
You Pay:  £26.61
353819 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 1" £69.43 50%
You Pay:  £34.72
353820 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 1 1/4" £99.84 50%
You Pay:  £49.92
353821 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 1 1/2" £152.04 50%
You Pay:  £76.02
353822 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 2" £208.80 50%
You Pay:  £104.40
353823 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 2 1/2" £420.64 50%
You Pay:  £210.32
353824 Stainless Steel 3 Piece Ball Valve Plain Socket F/F 3" £643.63 50%
You Pay:  £321.82