Economy Ratigan Style Blow-Out Preventer Model 312
Ratigan style BOP with taper thread internal end caps for higher working pressure engagement than acme-style designs. Carbon steel body rated to 3000 PSI. Full opening body with 26" ram spread when open — widest in the economy line.
Quick Specifications
SIZES AVAILABLE 2", 2-½", 3"
BODY & CAP MATERIAL Carbon Steel
END CAP STYLE Taper Thread Internal
CONNECTION Male × Female
HEIGHT 10"
WEIGHT 52 lbs.
WIDTH — RAMS OPEN 26"
RAM SCREW & GLAND Alloy Steel
RAM SIZES. Blind, 5/8"–1", 1-⅛", 1-¼", 1-½", 1-¾"
RAM MATERIALS STD-Buna, High Temp NACE/HSN
NACE SS RAM OPTION Available
Key Features
WHY THE MODEL 312
Taper Thread Internal Caps
Ratigan style design uses taper thread internal end caps — the tapered engagement provides a stronger and more positive seating than standard acme thread caps at 3000 PSI service.
Blow-Out Proof Ram Screw
Blow-out proof ram screw design prevents ejection under pressure — the same proven safety feature used across the WSI economy BOP line.
26" Ram Spread — Widest Economy
The Model 312 opens to a 26" width — the widest of any economy BOP in the WSI line. This extra lateral clearance is useful on wellheads with restricted overhead access.
Full Opening Body
Full opening body design does not restrict the production tubing bore when the BOP is open — no flow restriction during normal pump operation.
Carbon Steel Body
NACE Option Available
Optional NACE stainless steel ram screw and gland for sour service wells. Corrosion-resistant coatings available — contact factory for specifications.
Full Specifications
SIZES AVAILABLE 2", 2-½", 3"
BODY & CAP MATERIAL Carbon Steel
END CAP STYLE Taper Thread Internal
CONNECTION Male × Female
HEIGHT 10"
WEIGHT 52 lbs.
WIDTH — RAMS OPEN 26"
RAM SCREW & GLAND Alloy Steel
RAM SIZES. Blind, 5/8"–1", 1-⅛", 1-¼", 1-½", 1-¾"
RAM MATERIALS STD-Buna, High Temp NACE/HSN
NACE SS RAM OPTION Available
Product Notes
- Ratigan style BOP — taper thread internal end caps for stronger engagement
- 3000 PSI working pressure with carbon steel construction
- Widest ram spread in the economy BOP line at 26" open
- Alloy steel ram screw and packing gland
- Full opening body — does not restrict production flow
- Blow-out proof ram screw design
- NACE stainless steel ram screw option available
Compatible Accessories
WSI accessories and complementary products for the Model 312.
Same PSI — Acme Cap Style
Model 300
Prefer acme thread end caps? The Model 300 provides the same 3000 PSI rating in a more compact 20" open width.
1500 PSI Economy Option
Model 150
For standard-pressure wells, the Model 150 provides the same reliable design at 1500 PSI in ductile iron.
Step Up to Premier
Premier T-Series: Snap-Loc™ seal, forged alloy body, pressure-balanced rams, NACE standard. For wells requiring Premier-grade well control.
Related Products
Other WSI products in the same category that may better suit your application, pressure requirements, or well conditions.
Economy Hammer Cap Model 300
3000 PSI
Econom Hammer Cap Model 150
1500 PSI
Premier Threaded 300T
3000 PSI
