Threaded Blow-Out Preventers

WSI's Premier T-Series BOPs combine patented Snap-Loc™ seal technology with a new inter-locking ram design in a forged alloy steel body. Pressure-balanced rams harness well pressure to assist closure — significantly reducing operator effort. Available in 4" and 5" nominal sizes with full opening bore, EUE and LP threaded connections.

Wellhead Systems Inc.

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Premier Threaded Blow-Out Preventer 300T

Snap-Loc™ Seal
3000 PSI

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Premier Threaded Blow-Out Preventer 500T

Snap-Loc™ Seal
5000 PSI Max.

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Built to Hold

Why WSI BOPs

Snap-Loc™ Seal + Inter-Locking Ram

Patentd Premier Technology

WSI's patented Snap-Loc™ seal design and new inter-locking ram provide a positive, tamper-resistant closure that traditional ram designs cannot match. Combined with pressure-balanced rams that use well pressure to assist closure, operator effort is dramatically reduced when it matters most.

Forged Alloy Steel Body

Premier T-Series and F-Series BOPs are machined from forged alloy steel - eliminating all risk of casting porosity that can cause unexpected failure under pressure. Every unit is 100% pressure tested at the factory before shipping.

No casting porosity - forged alloy steel only on Premier series
100% factory pressure tested - every Premier BOP, no exceptions
Rated to -50°F for cold climate operations (Premier series)
Standard NACE MR-01-75 for sour gas environments

10K

Maximum Rating

PSI — Model 1000F Flanged

Hydraulic Option

500F and 1000F flanged models offer optional hydraulic actuation for remote or automated well control applications.

7

Total Models

Across 3 product types

Full Ram Selection

All BOPs support blind rams for full shut-in. Economy models accommodate rod sizes 5/8" through 1-¾". Premier series: 1-¼" and 1-½". Ram material: STD-Buna, High Temperature, or NACE/HSN.

RAM & Material Data

Available ram sizes, materials, and NACE stainless steel options for all BOP product types.

Economy Hammer Cap - Ram Sizes

Models 150, 300 & 312

RAM Type Size
Blind Ram Full shut-in
Rod Rams 5/8" – 1"
Rod Rams. 1-⅛"
Rod Rams 1-¼"
Rod Rams 1-½"
Rod Rams 1-¾"

RAM Materials
STD-BUNA - High Temp - NACE / HSN

Ram screw & packing gland: Carbon Steel (Model 150) · Alloy Steel (300 & 312). NACE stainless steel optional on all.

Premier Series - Ram Sizes & Connections

Models 300T, 500T, 500F & 1000F

RAM Type Size
Blind Ram Full shut-in
Rod Rams 1-¼"
Rod Rams 1-½"

300T & 500T Connections

Box (Up) Pin (Down)
2-⅜" EUE 2-⅜" EUE
2-⅞" EUE 2-⅞" EUE
3-½" EUE 3-½" EUE
3" LP 3-½" EUE
3" LP 3" LP

500F & 1000F Flange Options

500F: 2-9/16"/5M or 7/10M BTM · 5K Top × Bottom (10M BTM option on dual ram)
1000F: 2-9/16"/10M or 7/10M BTM · Studded side outlets only
Alternative flange sizes available upon request.

Protect Your Well. Call UPC Global Today

Our team will help you select the right BOP type, pressure rating, connection configuration, and ram sizes for your application. NACE and high-temperature options available on all economy models.