Detailed Product Description

"DGV" brand gate valves are designed and manufactured to provide maximum service life and dependability. All gate valves are full ported and meet the design requirements of API 600 and ASME B16.34. Valves are available in a complete range of body/bonnet materials and trims.

DESIGN SPECIFICATIONS:

Wall thickness and general valve design:                               API 600

Testing:                                                                              API 598

Pressure-temperature rating:                                                ASME B16.34

Face to face dimensions for butt-welding and flanged valves:   ASME B16.10

Flange design :                                                                   ASME B16.5

Butt-welding design:                                                            ASME B16.25

PRODUCTS RANGE:

Size:                   2" ~ 60"

Rating:                ASME Class 150 - Class 2500

Body Materials:   Carbon Steel, Stainless Steel or Alloy Steel.

Trim:                   API 600

Operation:           Handwheel, Gear, Motor, Hydraulic, Pneumatic

APPLICATION:    Oil, Gas, Refinery, Chemical, Petrochemical, Power plant, Water project, General Industry, ect.

DESIGN FEATURES:

(1) Rising Stem - easily visible open-close indication.

(2) Grease Fittings - yokesleeves equipped with fittings to minimize wear and operating torque.

(3) Swing Bolts facilitate - easier maintenance and packing replacement.

(4) Stuffing Box - optional lantern rings and grease injectors are available.

(5) Backseat - machined bonnet stem bushing provides back-up stem seal.

(6) Bonnet Joint - joint design varies with ASME class rating.

(7) Body - full ported, heavy duty body with API 600 wall thickness for maximum service life.

(8) Seat Rings separate heavy duty, full ported rings for easy maintenance.

(9) Handwheel - large handwheels for easy operation. Also available with gearing, motor actuators, or cylinder actuators for more difficult services.

(10) Yokesleeves - furnished in ductile Ni-resist or aluminum-bronze to reduce operating torque.

(11) Gland - two-piece gland/gland flange is self-aligning to eliminate stem damages from cocked gland.

(12) Stem - all DGV wedge gate valves are provided with upset forged T-head stems. By forging the T-head, the stem at the stem-wedge connection is strengthened. This design also allows the wedge to self-align, eliminating the possibility of a bent stem jamming the wedge.

(13) Wedge - heavy pattern, fully guided wedge precision fitted to body seats for maximum shutoff.

(14) End Connections - flanged end options are raised face smooth finish or ring type joint. Besides, Socket welding and Butt-welding end is also available.