Fire Gate Valve
OS&Y Gate Valve
An outside screw and yoke (OS&Y) gate valve with an exposed rising stem that gives a clear visual indication of open/closed position. Flanged connection for fire pump rooms and fire-water risers.
Flange drilling and marking are confirmed against the approved drawing, sample or order schedule before production.
Technical overview
Confirmed construction and operating data
Critical product data is presented in HTML for clear international sourcing. The valve is produced to a national standard; no foreign approval is claimed on this page.
Series specifications
- Product type
- OS&Y (Outside Screw & Yoke) Gate Valve
- Available sizes
- DN50 / 2 in to DN150 / 6 in
- Connection
- Double flange, GB/T 17241.6
- Working pressure
- PN16 / 1.6 MPa / 16 bar
- Body, cover & disc
- Ductile iron QT450-10
- Stem
- Stainless steel
- Stem nut
- Copper alloy
- Seal
- EPDM
- Coating
- Red epoxy coating
- Operation
- OS&Y rising-stem handwheel
- Installation
- Fire pump room or fire-water riser; stem vertical upward; allow full-open height
Available models
Configurations for quotation
International size and connection are the primary selection fields. ZSZF4-Q codes are retained only as factory references.
| International configuration | Nominal size | Working pressure | Factory reference |
|---|---|---|---|
| OS&Y Gate Valve | DN50 / 2 in | PN16 | ZSZF4-Q-50-16-MG |
| OS&Y Gate Valve | DN65 / 2½ in | PN16 | ZSZF4-Q-65-16-MG |
| OS&Y Gate Valve | DN80 / 3 in | PN16 | ZSZF4-Q-80-16-MG |
| OS&Y Gate Valve | DN100 / 4 in | PN16 | ZSZF4-Q-100-16-MG |
| OS&Y Gate Valve | DN150 / 6 in | PN16 | ZSZF4-Q-150-16-MG |
OEM / ODM capability
Configured to the approved drawing or sample
Manufacturing options are confirmed against the buyer's technical schedule. Connection-standard names describe available machining patterns and do not imply third-party product approval.
Send your OS&Y gate valve schedule
Include size, flange drilling requirement and quantity.
