Economy Hammer Cap Blow-Out Preventer Model 150
Fast-acting economy BOP with ductile iron body and acme cap thread that eliminates cross-threading in the field. Blow-out proof ram screw and reinforced ram block prevent extrusion under pressure. Full-opening body in 2", 2-½", and 3" sizes.
Quick Specifications
SIZES AVAILABLE 2", 2-½", 3"
BODY & CAP MATERIAL Ductile Iron
CONNECTION. Male × Female
HEIGHT 9-½"
WEIGHT 43 lbs.
WIDTH — RAMS OPEN 20"
RAM SCREW & GLAND Carbon 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
HANDLES Yes
Key Features
WHY THE MODEL 150
Quick Opening
Acme cap thread design eliminates cross-threading under field pressure — even when the operator is working fast. Open and close the BOP faster than any bolted end-cap design.
Cap O-Ring Seal
Pressure-tight O-ring seal at the cap interface provides an additional barrier against cap-end leakage — a common failure point on conventional end-cap BOP designs.
Blow-Out Proof Ram Screw
The ram screw is specifically designed to resist ejection under pressure — a critical safety feature that prevents the screw from becoming a projectile during a well control event.
Full Ram Selection
Accommodates the widest rod size range in the economy BOP line: Blind, 5/8"–1", 1-⅛", 1-¼", 1-½", and 1-¾" rams. STD-Buna, High Temp, and NACE/HSN rubber compounds available.
Reinforced Ram Block
Corrosion-Resistant Options
Full Specifications
SIZES AVAILABLE 2", 2-½", 3"
BODY & CAP MATERIAL Ductile Iron
CONNECTION. Male × Female
HEIGHT 9-½"
WEIGHT 43 lbs.
WIDTH — RAMS OPEN 20"
RAM SCREW & GLAND Carbon 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
HANDLES Yes
Product Notes
- Acme cap thread eliminates cross-threading under field conditions
- Blow-out proof ram screw prevents ejection under pressure
- Reinforced ram block reduces ram extrusion at working pressure
- Full opening body does not restrict production flow
- Cap O-ring provides pressure-tight seal at cap interface
- Corrosion-resistant materials and coatings available on request
- NACE stainless steel ram screw and gland option available
Compatible Accessories
WSI accessories and complementary products for the Model 150.
Upgrade to 3000 PSI
Need higher pressure? The Model 300 uses the same Acme cap design in carbon steel — rated to 3000 PSI with alloy steel ram screw and gland.
Ratigan Style — 3000 PSI
Step Up to Premier
WSI Premier T-Series: Snap-Loc™ seal, forged alloy body, NACE standard, 100% factory tested. For wells where the economy line is not adequate.
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
Economy Ratigan Style Model 312
3000 PSI
Premier Threaded 300T
3000 PSI
