Gate, Globe & Check Valves
Flanged gate, globe and check valves and Y-strainers, cast in our own foundry and machined in Wenzhou. Every valve is pressure-tested before it ships.
API 600 · API 623 · API 594 · GB/T 12234 · GB/T 12235 · GB/T 12236 · WCB / CF8 / CF3M
GATE VALVES · WENZHOU PLANTSelection guide
Which Valve Do You Need?
Pick by what the valve has to do in the line. Our engineers confirm the final selection against your datasheet.
| Type | Function | Standard | Range | Typical service |
|---|---|---|---|---|
| Gate valve | On/off isolation, full bore, low pressure drop | API 600 · GB/T 12234 | Class 150–600 · PN16 · DN25–DN500 | Water, oil, gas, steam lines |
| Globe valve | Throttling and tight shut-off | API 623 · GB/T 12235 | Class 150–600 · PN16–PN40 | Flow control, frequent operation |
| Check valve | Stops reverse flow | API 594 · GB/T 12236 | DN15–DN300 · NPS ½″–12″ | Pump and compressor discharge |
| Y-strainer | Removes scale and debris | GB · ASME · JIS flanged | PN16 · Class 150 · 10K · DN15–DN300 | Upstream of pumps, meters, valves |
Gate Valves
Full bore, wedge disc. For on/off isolation where the line runs fully open or fully closed.
Globe Valves
Disc moves onto the seat. For throttling and frequent operation where tight shut-off matters.
Not sure which valve fits?
Send your datasheet or line list. Our engineers pick the valve and quote within 24 hours.
Check Valves
Open with forward flow, close on reverse flow. Protect pumps and compressors from backflow.
Y-Strainers
Removable stainless screen catches scale and debris before pumps, meters and valves.
Knife Gate Valves
For slurry, pulp and wastewater lines.
Made by BAUTU
From Casting to Crate
01Casting
Bodies and bonnets poured in our own foundry; size, rating and material cast into every body.
02CNC machining
Bodies, bonnets, wedges, discs and stems machined on our CNC lines.
03Drilling
Flange bolt holes drilled in-house and checked against the drawing.
04Assembly
Wedge or disc, seat rings, stem and packing fitted; bonnet bolts torqued.
05Material check
Body and trim checked with a handheld spectrometer to confirm the grade.
06Pressure test
Shell and seat test on every valve, not batch samples.
07Dimension check & QC tag
Face-to-face and flanges checked against the drawing; QC tag on every valve.
08Export packing
Flange faces capped, valves crated for sea freight with the test report inside.
SAMPLE TEST REPORT · EN 10204 3.1 · CLICK TO OPEN
Quality records
Test Report (EN 10204 3.1) in Every Shipment
- Heat number of the body casting
- Chemical composition against ASTM limits
- Mechanical properties: tensile, yield, elongation
- Shell and seat test pressures and results
- Signed and stamped by our QC department
We welcome third-party inspection (e.g. SGS or BV), arranged and paid for by the buyer.
Download Sample Test Report (PDF)Why BAUTU
Why Buy Gate, Globe & Check Valves from BAUTU
Own foundry
Bodies cast in our own foundry since 1994, so every casting traces back to its heat number.
Every valve tested
Shell and seat test on every valve; test report with heat number and test pressures in every shipment.
Four types, one order
Gate, globe, check valves and Y-strainers from one factory, on one purchase order and one set of documents.
Inspect before shipment
Third-party inspection welcome (arranged and paid by the buyer), or a live video of your valves on the test bench.
FAQ
Gate, Globe & Check Valve FAQ
Gate valve or globe valve: which do I need?
A gate valve is for isolation: it runs fully open or fully closed and, when open, has almost no pressure drop. A globe valve is for throttling and frequent operation: it controls flow and shuts off tightly, but has a higher pressure drop. Do not use a gate valve half open to regulate flow.
Swing or lift check valve?
Swing check valves suit larger lines in horizontal pipe, or vertical pipe with upward flow, and have a low pressure drop. Lift check valves suit smaller sizes and close tightly, with a higher pressure drop. Send us the line size, media and flow direction and we recommend the type.
Which body materials do you offer?
WCB carbon steel (ASTM A216) for water, oil, gas and steam in non-corrosive service; CF8 (cast 304) and CF3M (cast 316L) stainless steel for corrosive media.
Are your valves API certified?
API series are designed and built to API 600, API 623 and API 594 and pressure-tested per API 598. We do not hold an API Monogram licence. Every shipment includes a test report with heat number, chemical composition, mechanical properties and test results.
What is your lead time?
Standard sizes ship in 15–20 days. Large sizes and special options may take longer; we confirm the date with your quote.
Can I inspect the valves before shipment?
Yes. We welcome third-party inspection (for example SGS or BV), arranged and paid for by the buyer, or we can show your valves on the test bench in a live video call.
Need a Gate, Globe or Check Valve Quote?
Send valve type, size, pressure class, body material, media and quantity. Our engineers reply within 24 hours.