SKU: RK-BLS-ST

BLS Ball Valve Repair Kit 50% Stainless Steel/PTFE

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50% Stainless Steel and Teflon filled seats for higher pressure and temperature applications. Suits 2 way 3 piece 316 Stainless Steel Ball Valves. Great for V port ball valves where the seat is exposed to the media for longer periods (max temperature rating of 200°C for v ports). Includes valve seats, washers and stem oring. Remember to operate within the pressure and temperature curve and do not site at the maximum temperature consistently. Please note that the 50/50 seat increases the torque of the ball valve as the below table shows. Please note these are no load torques (valve without pressure), we recommend at least a 30% safety margin on top of these torque figures when sizing actuators.

Size Torque @ zero pressure (Nm) Torque @ full pressure (Nm) Torque increase vs standard seats
1/4" 5 6.5 25.00%
3/8" 5 6.5 25.00%
1/2" 7 9 40.00%
3/4" 10.5 14 31.25%
1" 14 17 40.00%
1-1/4" 18.5 25 32.14%
1-1/2" 23 30 27.78%
2" 33 40 32.00%
2-1/2" 62 80 29.17%
3" 95 125 26.67%
4" 140 185 27.27%

50% stainless steel filled PTFE seats
The below table gives the bolt tightening torque for the tie rods when re-assembling the three piece ball valve with high temperature seats.

Size Bolt Tightening Torque (Nm)
1/4" 40
3/8" 40
1/2" 40
3/4" 50
1" 50
1-1/4" 60
1-1/2" 60
2" 60
2-1/2" 85
3" 85
4" 100

Item Description Material Qty
1 Ball Seat 50% SS 50% PTFE 2
2 Body Gasket PTFE 2
3 Stem Packing PTFE 1 Set
4 O-Ring FFKM 1

Size 3/4" to 4" 
To Suit 316 Stainless Steel 3 piece Ball Valves
Pressure 63 BAR @ Ambient
Temperature -20°C to 220°C

DATA SHEET

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RK-BLS-ST

BLS Ball Valve Repair Kit 50% Stainless Steel/PTFE

Features:

Size 3/4" to 4" 
To Suit 316 Stainless Steel 3 piece Ball Valves
Pressure 63 BAR @ Ambient
Temperature -20°C to 220°C

Description:

50% Stainless Steel and Teflon filled seats for higher pressure and temperature applications. Suits 2 way 3 piece 316 Stainless Steel Ball Valves. Great for V port ball valves where the seat is exposed to the media for longer periods (max temperature rating of 200°C for v ports). Includes valve seats, washers and stem oring. Remember to operate within the pressure and temperature curve and do not site at the maximum temperature consistently. Please note that the 50/50 seat increases the torque of the ball valve as the below table shows. Please note these are no load torques (valve without pressure), we recommend at least a 30% safety margin on top of these torque figures when sizing actuators.

Size Torque @ zero pressure (Nm) Torque @ full pressure (Nm) Torque increase vs standard seats
1/4" 5 6.5 25.00%
3/8" 5 6.5 25.00%
1/2" 7 9 40.00%
3/4" 10.5 14 31.25%
1" 14 17 40.00%
1-1/4" 18.5 25 32.14%
1-1/2" 23 30 27.78%
2" 33 40 32.00%
2-1/2" 62 80 29.17%
3" 95 125 26.67%
4" 140 185 27.27%

50% stainless steel filled PTFE seats
The below table gives the bolt tightening torque for the tie rods when re-assembling the three piece ball valve with high temperature seats.

Size Bolt Tightening Torque (Nm)
1/4" 40
3/8" 40
1/2" 40
3/4" 50
1" 50
1-1/4" 60
1-1/2" 60
2" 60
2-1/2" 85
3" 85
4" 100
.

BLS Ball Valve Repair Kit 50% Stainless Steel/PTFE

RK-BLS-ST

Construction:

Item Description Material Qty
1 Ball Seat 50% SS 50% PTFE 2
2 Body Gasket PTFE 2
3 Stem Packing PTFE 1 Set
4 O-Ring FFKM 1

WARNING

These products are intended for use in industrial applications only. Do not use these products where pressures and temperatures can exceed those listed under ‘Technical Data’ and in our individual ‘Series’ data sheets. Before using these products with fluids other than these specified, for non-industrial applications, life-support systems, or other applications not within published specifications, consult Process Systems Pty Ltd. Through misuse, age, or malfunction, components used in industrial valve applications can fail in various modes. The system designer is warned to consider the failure modes of all component parts used in industrial valve applications and to provide adequate safeguards to prevent personal injury or damage to equipment in the event of such failure. System designers must provide a warning to the user in the system instructional manual if protection against a failure mode cannot be adequately provided. System designers and end users are cautioned to review specific warnings or specifications found in instruction sheets or labels packed or attached and shipped with the products. Our policy is one of continuous research and development. We therefore reserve the right to amend without notice the specifications given in this document or our individual ‘Series’ data sheets.

WARRANTY INFORMATION

All valve series and other products manufactured or distributed by Process Systems Pty. Ltd. are warranted by Process Systems to be free of defects in material and workmanship for a period of 1 year from the date of purchase or as the manufacturer warrants. Process Systems obligation under this warranty is limited to repair or replacement of the defec1ive product or refund of the purchase price paid solely at the discretion of Process Systems and provided such defective product is returned to Process Systems freight prepaid and upon examination by Process Systems such product is found defective. This warranty shall be void in the event that the product has been subject to misuse, misapplication, improper maintenance, modification or tampering. This warranty is expressed in lieu of all other warranties, expressed or implied from Process Systems Pty. Ltd. representatives or employees. Process Systems reserves the right to change Valve and Brochure specifications without notice.