316L Fully Lugged Knife Gate Valve

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Knife Gate Valve, Lugged Body, Rising Stem / Non-Rising Stem (Specify)

Size Range

DN50 – DN600 (2″ to 24″) 

圧力定格

Class 150 (PN10/PN16 compatible)

End Connection

Lugged Type (Tapped bolt holes per ASME B16.5 Class 150 drilling)

Design Standard

MSS SP-81 / API 609 (Category A)

Face to Face Standard

MSS SP-81 (Short pattern) / Manufacturer’s standard

Test Standard

API 598 / MSS SP-81

Service

Slurries, Pulp & Paper, Wastewater, Chemical, Mining, Corrosive Fluids

Temperature Range

-20°C to +180°C (-4°F to +356°F) (PTFE seat limitation)

体

1

Stainless Steel

ASTM A351 Grade CF8M (316) or CF3M (316L)

Gate (Blade)

1

Stainless Steel

ASTM A240 Type 316/316L, ground finish, beveled edge

シート

1

PTFE

Virgin PTFE or Reinforced PTFE (glass/carbon filled)

幹

1

Stainless Steel

ASTM A276 Type 316, anti-blowout design

Packing

Set

PTFE / Graphite

Chevron / V-ring type, adjustable

Gland Follower

1

Stainless Steel

ASTM A351 CF8M

Yoke

1

Stainless Steel / Ductile Iron

Cast or fabricated

Bonnet / Cover

1

Stainless Steel

Optional, for pressure-containing designs

Bonnet Bolts

Set

Stainless Steel

ASTM A193 Grade B8

Bonnet Nuts

Set

Stainless Steel

ASTM A194 Grade 8

Handwheel / Operator

1

Cast Iron / Steel

With stainless steel stem nut

Name Plate

1

Stainless Steel

MSS SP-25 marking

体

CF8M (316 SS)

Excellent corrosion resistance in acidic, chloride, and industrial environments. Suitable for food, chemical, and marine applications.

Gate

316 SS

Ground finish reduces friction against PTFE seat; beveled edge cuts through slurry solids.

シート

PTFE

Chemically inert, low friction, provides bubble-tight shut-off even with entrained solids. Resilient and self-cleaning.

幹

316 SS

Anti-blowout shoulder, rolled threads for strength.

Lugged Body

Tapped bolt holes allow dead-end service or installation without nuts on one side; suitable for end-of-line or isolation applications.

Bidirectional Shut-Off

PTFE seat provides tight sealing in both directions.

Full Port

Unobstructed flow when fully open, minimizes pressure drop.

Self-Cleaning

Gate cuts through沉积物 during closure; seat design prevents solids buildup.

アンチブローアウトステム

Stem retained by internal shoulder, cannot be ejected under pressure.

Replaceable Seat

Seat can be replaced without removing valve from line (in most designs).

Flange Drilling

Drilled per ASME B16.5 Class 150, compatible with PN10/PN16 flanges.

2″

50

48

350

200

120.7

4

18

3″

80

51

420

250

152.4

4

18

4″

100

57

500

280

190.5

8

20

6″

150

70

650

350

241.3

8

22

8″

200

76

800

400

298.5

8

22

10″

250

89

950

450

362.0

12

24

12″

300

102

1150

500

431.8

12

24

14″

350

114

1350

560

476.3

12

25

16″

400

127

1550

620

539.8

16

25

18″

450

140

1750

680

577.9

16

28

20″

500

152

1950

740

635.0

20

28

24″

600

178

2350

860

749.3

20

32

Shell (Body) Test

Water

1.5 x Rated Pressure (3.0 MPa / 435 psi)

No visible leakage

Seat (Seal) Test

Water

1.1 x Rated Pressure (2.2 MPa / 319 psi)

No visible leakage (Class VI optional)

Low Pressure Seat Test

Air / Nitrogen

0.6 MPa (87 psi)

Bubble-tight

Backseat Test

Water / Air

Rated Pressure

No leakage through packing when fully open

Handwheel

Standard (≤12″)

Rising stem or non-rising stem

Bevel Gear

Optional (≥14″)

For easier operation on larger sizes

Pneumatic Actuator

Optional

Double-acting or spring-return

Electric Actuator

Optional

On-off or modulating

Hydraulic Actuator

Optional

For high thrust requirements

Metal Seat

For high temperature or abrasive services (replace PTFE with metal seat)

V-Seat / Shearing Gate

Modified gate for cutting fibrous materials

Live-Loaded Packing

Belleville springs maintain packing compression

Flush Ports

For purging or cleaning body cavity

Extended Stem

For buried or insulated service

Oxygen Cleaning

Degreased per CGA G-4.1 for oxygen service