SKU: PCS

Stainless Steel Piston Check Valve

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The PCS series of check valves is a 316 Stainless Steel Piston style check valve with a PTFE seat and BSP threaded end connections. The spring backed piston allows for this check valve to be mounted in any direction and features a low cracking pressure of a few kPa (depending on the size). The PTFE seat is rated to 180°C for intermittent use, prolonged use at this temperature is not recommended. At low temperatures the hard PTFE seat will also in some cases have seepage past the seat. Rated to a media pressure of 40 Bar, refer to below pressure temperature chart for operating pressures.

Model Size DN (mm) Media Pressure Media Temperature Cracking Pressure (kPa)
PCS-04 ½” 15 0 to 40 BAR 0°C to 180°C 4
PCS-05 ¾” 20 0 to 40 BAR 0°C to 180°C 3.7
PCS-06 1” 25 0 to 40 BAR 0°C to 180°C 3.5
PCS-07 1 ¼” 32 0 to 40 BAR 0°C to 180°C 3
PCS-08 1 ½” 40 0 to 40 BAR 0°C to 180°C 2.8
PCS-09 2” 50 0 to 40 BAR 0°C to 180°C 2.5

 Stainless Steel Piston Check Valve Temperature vs Pressure

Stainless Steel Piston Check Valve

Model Size A B C
PCS-04 ½” 65 46 19
PCS-05 ¾” 80 58 23
PCS-06 1” 90 69 27
PCS-07 1 ¼” 105 75 32
PCS-08 1 ½” 120 85 41
PCS-09 2” 140 98 50

All dimensions in mm unless shown otherwise. 

Stainless Steel Piston Check Valve

Number Name Material
1 Body ASTM A351 CF8M
2 Nut SS304
3 Spring Washer SS304
4 Washer SS304
5 Seat Ring PTFE
6 Plug SS316
7 Spring SS304
8 Gasket Packing PTFE
9 Cap ASTM A351 CF8M

Size 1/2" to 2" BSP
Body 316 Stainless Steel
Seat PTFE
Pressure Range 0 to 40 BAR
Temperature 0 to 180°C

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PCS

Stainless Steel Piston Check Valve

Features:

Size 1/2" to 2" BSP
Body 316 Stainless Steel
Seat PTFE
Pressure Range 0 to 40 BAR
Temperature 0 to 180°C

Description:

The PCS series of check valves is a 316 Stainless Steel Piston style check valve with a PTFE seat and BSP threaded end connections. The spring backed piston allows for this check valve to be mounted in any direction and features a low cracking pressure of a few kPa (depending on the size). The PTFE seat is rated to 180°C for intermittent use, prolonged use at this temperature is not recommended. At low temperatures the hard PTFE seat will also in some cases have seepage past the seat. Rated to a media pressure of 40 Bar, refer to below pressure temperature chart for operating pressures.

Model Size DN (mm) Media Pressure Media Temperature Cracking Pressure (kPa)
PCS-04 ½” 15 0 to 40 BAR 0°C to 180°C 4
PCS-05 ¾” 20 0 to 40 BAR 0°C to 180°C 3.7
PCS-06 1” 25 0 to 40 BAR 0°C to 180°C 3.5
PCS-07 1 ¼” 32 0 to 40 BAR 0°C to 180°C 3
PCS-08 1 ½” 40 0 to 40 BAR 0°C to 180°C 2.8
PCS-09 2” 50 0 to 40 BAR 0°C to 180°C 2.5

 Stainless Steel Piston Check Valve Temperature vs Pressure

.

Stainless Steel Piston Check Valve

PCS

Dimensions:

Stainless Steel Piston Check Valve

Model Size A B C
PCS-04 ½” 65 46 19
PCS-05 ¾” 80 58 23
PCS-06 1” 90 69 27
PCS-07 1 ¼” 105 75 32
PCS-08 1 ½” 120 85 41
PCS-09 2” 140 98 50

All dimensions in mm unless shown otherwise. 

.

Stainless Steel Piston Check Valve

PCS

Construction:

Stainless Steel Piston Check Valve

Number Name Material
1 Body ASTM A351 CF8M
2 Nut SS304
3 Spring Washer SS304
4 Washer SS304
5 Seat Ring PTFE
6 Plug SS316
7 Spring SS304
8 Gasket Packing PTFE
9 Cap ASTM A351 CF8M

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 Hawleys 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 Hawleys are warranted by Hawleys 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. Hawleys 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 Hawleys and provided such defective product is returned to Hawleys freight prepaid and upon examination by Hawleys 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 Hawleys representatives or employees. Hawleys reserves the right to change Valve and Brochure specifications without notice.