Stop Check Valve
Datasheet
Download datasheet (PDF)Specifications are indicative. Final specification is confirmed at quotation.
Specifications
Confirmed at quote- Size Range
- DN50 to DN600
- Pressure Class
- Class 150, Class 300
- End connection
- Flanged · Butt weld
- Operating temperature
- -60°C to 538°C
Standards
- Design & manufacture
- API 6D, API 602, ASME B16.34, GB/T 12235, API 607
- Inspection & test
- API 598, GB/T 13927
- Fire safe
- API 607
- Face to face
- ASME B16.10, GB/T 12221
- Flange & end dimension
- ASME B16.5, GB/T 9113
- Butt weld end
- ASME B16.25, GB/T 12224
- Pressure-temperature rating
- ASME B16.34, GB/T 12224
- Materials
- ASME B16.34, GB/T 12224
Configure your variant(manually adjust box on the right if you require a different spec)
- Size
- Pressure
- End connection
Materials
All available material options per part. Click a pill to set it in the configurator.
- Body
- Disc And Seat Sealing Surface Hard Facing
Operating media
Typical applications
- Petroleum pipelines
- Chemical pipelines
- Pharmaceutical pipelines
- Fertiliser industry pipelines
- Power industry pipelines
- Low-temperature pipelines
- Pump outlet lines requiring combined stop and check function
Features
- Dual function: operates as a stop valve when stem is lowered and as a check valve when stem is raised
- Stem and disc are not mechanically fixed, enabling independent check valve action
- Disc and seat sealing surfaces are hard-faced with iron base alloy or Stellite cobalt base carbide
- Sealing surface provides wear resistance, high-temperature resistance, corrosion resistance, and extended service life
- Lower disc-to-seat friction compared to gate valve, improving wear resistance
- Reduces installation cost and space on lines requiring both stop and check functions
- Size range NPS 2" - 24" (DN50-DN600)
- Pressure rating Class 150-420 / PN10-420
- Temperature range -60 °C to +538 °C
Description
A multi-purpose cast valve that functions as both a stop valve and a check valve, with a structure similar to a globe valve in which the stem and disc are not mechanically fixed to one another. When the stem is lowered the disc is pressed onto the seat acting as a stop valve; when the stem is raised the valve operates as a check valve. The disc and seat sealing surfaces are hard-faced with iron base alloy or Stellite cobalt base carbide. Reduces installation cost and space on lines requiring both stop and check functions, such as pump outlet lines.
Selection notes
This stop check valve is a check valve and stop valve pattern, supplied for flanged and butt weld installation.
Sizes run DN50 to DN600, in Class 150, Class 300.
The body is offered in Carbon Steel, Stainless Steel and Alloy Steel, so the grade can be matched to the service rather than the other way round.
Stated service media include petroleum, chemical, pharmaceutical, fertiliser, power industry fluids and low-temperature media.
It is catalogued for Oil & Gas.
Working temperature is -60°C to 538°C.
Built to API 6D, API 602, ASME B16.34, GB/T 12235 and API 607.
Available pressure classes
Pressure classes this product is rated to.