Elite Flow Control’s Cast Steel PSB (Pressure Seal Bonnet) Globe Valves are heavy-duty, high-pressure flow control valves engineered for precise throttling, regulation, and isolation service in the most demanding industrial environments. Designed for pressure classes of 900LB, 1500LB, and 2500LB with butt weld end connections, these valves are the definitive choice for critical high-pressure service where conventional bolted bonnet designs cannot provide the level of sealing integrity required.
The Pressure Seal Bonnet is the standout feature of this design – a self-energising mechanism where bonnet sealing force increases automatically as line pressure rises. This unique characteristic makes PSB Globe Valves particularly well suited to high-pressure steam systems, power generation plants, refineries, and upstream oil & gas applications where any bonnet leakage is simply not acceptable.
The stellite-faced disc and seat configuration delivers outstanding resistance to erosion, wear, and wire-drawing – extending valve service life significantly in high-velocity or high-differential-pressure throttling applications. The flexible graphite packing system ensures reliable, long-term stem sealing across extreme temperature ranges, while the optional grease injector and lantern ring provide an additional layer of fugitive emission control for environmentally sensitive services.
Constructed from a comprehensive range of ASTM-standard materials – including carbon steel, low-temperature carbon steel, stainless steel, duplex stainless steel, and alloy steel – and available in sizes from 2″ to 16″ (DN50 to DN400), these valves can be precisely specified to meet the most exacting process requirements across oil & gas, power generation, petrochemical, chemical, and allied industries.
Key Features:
- Pressure Seal Bonnet – self-energising seal improves with rising line pressure
- BW (Butt Weld) end connections for maximum joint integrity
- Available in 900LB, 1500LB & 2500LB pressure classes
- Stellite-faced disc and seat for superior erosion and wear resistance
- Flexible graphite packing for extreme temperature service
- SS+Graphite / SS304 / SS316 seal ring options
- Optional handwheel operation and grease injector with lantern ring
- Size range: 2″ ~ 16″ (DN50 ~ DN400)
- Full range of ASTM material options available
- Manufactured and tested to ASTM Standards
Model No.: EFC-2GE9 Size: 2″ ~ 16″ (DN50 ~ DN400)
END CONNECTION TYPES
| Type | Pressure Class |
|---|---|
| BW (Butt Weld) Pressure Seal Bonnet | 900LB, 1500LB, 2500LB |
OPTIONAL FEATURES
- Handwheel Operation
- Grease Injector and Lantern Ring
MATERIAL LIST
| Part | Material Options |
|---|---|
| Body | ASTM A216 WCB+STL / ASTM A352 LCB+STL / ASTM A351 CF3 / ASTM A351 CF8M(CF3M) / ASTM A995 4A / ASTM A217 WC6 |
| Disc | ASTM A105+STL / ASTM A182 F6a+STL / ASTM A182 F304(L)+STL / ASTM A182 F316(L)+STL / ASTM A182 F51+STL / ASTM A182 F304+STL |
| Stem | ASTM A182 F6a / ASTM A182 F6a / ASTM A182 F304(L) / ASTM A182 F316(L) / ASTM A182 F51 / ASTM A182 F304 |
| Seal Ring | SS+Graphite / SS304 / SS316 |
| Stuffing Box | ASTM A105+STL / ASTM A350 LF2+STL / ASTM A182 F304(L) / ASTM A182 F316(L) / ASTM A182 F51 / ASTM A182 F304 |
| Bonnet | ASTM A216 WCB / ASTM A352 LCB / ASTM A351 CF8(CF3) / ASTM A351 CF8M(CF3M) / ASTM A995 4A / ASTM A217 WC6 |
| Packing | Flexible Graphite |
| Gland | ASTM A276 410 / ASTM A276 410 / ASTM A276 304 / ASTM A276 316 / ASTM A276 316 / ASTM A276 410 |
| Gland Flange | ASTM A105 / ASTM A105 / ASTM A182 F304 / ASTM A182 F304 / ASTM A182 F316 / ASTM A105 |
| Eyebolt | ASTM A193 B7 / ASTM A320 L7 / ASTM A193 B8(M) / ASTM A193 B8(M) / ASTM A193 B8M / ASTM A193 B16 |
| Nut | ASTM A194 2H / ASTM A194 7 / ASTM A194 8(M) / ASTM A194 8(M) / ASTM A194 8M / ASTM A194 4 |
| Stem Nut | Bronze (all material classes) |
