Pressure Seal Gate Valve
- Size
- NPS 2-24 (DN 50-600)
- Class
- 600 - 4500
- Material
- A105, A182 F11, F22, F91, F92
FROM OUR TEST BENCHNPS 10 · Class 2500 check valve
DERVOS VALVE · LISHUI MANUFACTURING PLANT
Pressure seal &
forged steel valves
Gate, globe, check and stop-check valves manufactured for high-pressure steam, feedwater and process lines.
For RFQ: send size, pressure class, material, quantity and delivery date. E-mail your MTO or drawings with the enquiry.
- Manufacturing site
- Lishui, Zhejiang
- Catalogue pressure classes
- Class 600–4500
- Selected body materials
- A105 · F22 · F91 · F92
- Factory inspection
- Dimensions · pressure · coating
Need a project-specific configuration? Send your specification for quotation ↗
Manufactured valve ranges
Industrial valve product range
Pressure seal valvesMain steam, reheat & feedwater
4 products →Forged steel valvesIntegral forged constructions
3 products →High pressure valvesSteam, water & process isolation
3 products →
Pressure Seal Globe Valve
- Size
- NPS 2-16 (DN 50-400)
- Class
- 900 - 4500
- Material
- A105, A182 F11, F22, F91, F92
Pressure Seal Check Valve
- Size
- NPS 2-24 (DN 50-600)
- Class
- 600 - 4500
- Material
- A105, A182 F11, F22, F91, F92
No matching valves
Try a valve type, material grade or pressure class, or send us your specification.
Plant & quality control
Valve manufacturing
and inspection
Eight real photographs from our Lishui plant and one valve order: approved GA drawing, dimensional inspection, pressure testing and coating check.
01 The plant
Lishui, Zhejiang, China
02 Assembly shop
Valve body machining and assembly
03 Paint shop
Surface preparation and coating
04 Order drawing
Buyer-approved GA drawing
05 Dimensional check
Checked against the approved drawing
06 Pressure test 1
Valve secured in the test rig
07 Pressure test 2
Pressure read on a calibrated gauge
08 Coating check
Dry film thickness before packing
Industrial applications
Valves for power and process plants
Power generation
Main steam, reheat & feedwater
Gate, globe, check and stop-check valves→
Refining & process
High-pressure isolation
Isolation valves, drains and vents→Application photographs illustrate service environments. Review pressure, temperature and medium before selection.
Order documentation
Drawings, certificates
and test records
GA drawings, material certificates, pressure test reports and ITP scope are agreed for each order.
Review product specificationsTalk to the manufacturer
Send your valve requirement.
One valve or a project list. Tell us what you need and we’ll review the size, material, pressure class and documents with you.
inquiry@valvesmaker.comAlready have a valve list?
E-mail your Excel, PDF or MTO. Include quantities and the required delivery date.