Control Products 300WCTT User Manual

WAFER SILENT

CHECK VALVES

- 204 -

300WC SERIES

CAST STEEL AND STAINLESS STEEL

WAFER SILENT CHECK VALVES

Pressures to 740 PSIG (51 barg)

Temperatures to 400ºF (204ºC)

●ASME Class 300 rated check valves

● Designed to reduce surge and Water Hammer

● Silent, non-slam closure

● Center guided at both ends to prevent binding

and cocking

● Compact face to face length for space saving

● Wafer body style fits between FF or RF flanges

● Dual rating 150# and 300# in sizes 2" through 6"

MODELS

● 300WCCT – Cast Steel Body, Stainless Steel Disc

● 300WCTT – Stainless Steel Body, Stainless Steel Disc

O

PTIONS

(Consult factory)

● Viton Seats

● Other Spring Material

● Heavier or Lighter Springs

A

PPLICABLE CODES

●ASME Sec. VIII and B16.34 Bodies

● API 598

Canadian Registration - OC10274.5C

APPLICA TIONS

●Liquid Service

● Process Industry

● Power Industry

● Chemical Industry

● Oil & Gas

● Pulp & Paper

● Metal & Mining

● Water & Waste

0 3 0 0 - 3 0 0 W C C T M - T

123456789101112131415

Inlet Size

Model

Dash Seat Dash Spring

300WC Series Ordering Code

Model - Position 6 - 12

300WCCT - Cast Steel Body, Stainless Steel Disc
300WCTT - Stainless Steel Body, Stainless Steel Disc

Seat - Position 13

M - Metal

Dash - Position 14
Spring - Position 15

T - Stainless Steel

Inlet Size* - Position 1 - 4

0200 - 2"
0250 - 2

1

⁄2"
0300 - 3"
0400 - 4"
0500 - 5"
0600 - 6"

Dash - Position 5

PRESSURE/TEMPERATURE CHART

ASME 16.34

800
700
600
500
400
300

Pressure (psi)

200
100

0

-50 0 15050 100

30

0

# CS

300# SS

200 250

300

350

Viton O-Ring

450

400

Temperature (F)

WAFER SILENT

CHECK VALVES

- 205 -

300WC SERIES

CAST STEEL AND STAINLESS STEEL

WAFER SILENT CHECK VALVES

S

PECIFICATION

Check Valve shall be single disc design with Cast Steel or Stainless Steel wafer
body style designed to ASME Sec. VIII and ASME B16.34. The check valve shall
have a SS seat and disc and be center guided from both ends. The check valve
shall be ANSI 300 PSIG rated. The spring shall be 316SS. The check valve shall
be SSI 300WC Cast Steel or Stainless Steel Series.

MATERIALS OF

CONSTRUCTION

Part Carbon Steel Stainless Steel
Body A216-WCB A351-CF8M
Discs A351-CF8M A351-CF8M
Seat A351-CF8M A351-CF8M
Spring 316SS 316SS
O-Ring Viton Viton

Connections: 2" to 6"

Wafer Flanged RF*

DIMENSIONS inches (mm) AND WEIGHTS pounds (kg)

Seats: 2" to 6" Stainless Steel

Cracking Pressure:

Horizontal Mounting - .3 psid

Vertical Mounting - .75 to 1.25 psid

* Sizes 2”-6” are dual rated for 150# and 300#
applications and fit between both flanges.

Stud Selection

Size A B * QTY Dia Length Weight

150 25⁄8 41⁄8 4

5

⁄8 61⁄4 5

2

(67) (105) (16) (159) (2.3)

(50)

300 25⁄8 43⁄8 8

5

⁄8 61⁄2 5

(67) (111) (16) (165) (2.3)

150 27⁄8 47⁄8 4

5

⁄8 63⁄4 7

21⁄2

(73) (124) (16) (171) (3.2)

(65)

300 27⁄8 51⁄8 8

3

⁄4 71⁄4 7

(73) (130) (19) (184) (3.2)

150 31⁄8 57⁄8 4

5

⁄8 7 11

3

(79) (137) (16) (178) (5.0)

(80)

300 31⁄8 57⁄8 8

3

⁄4 73⁄4 11

(79) (149) (19) (197) (5.0)

150 4 67⁄8 8

5

⁄8 8 20

4

(102) (175) (16) (2.3) (9.1)

(100)

300 4 71⁄8 8

3

⁄4 920

(102) (181) (19) (229) (9.1)

150 45⁄8 73⁄4 8

3

⁄4 8.5 34

5

(117) (197) (19) (216) (15.4)

(125)

300 45⁄8 81⁄2 8

3

⁄4 93⁄4 34

(117) (216) (19) (247) (15.4)

150 5 9⁄16 83⁄4 8

3

⁄4 10 42

6

(141) (222) (19) (254) (19.1)

(150)

300 5 9⁄16 97⁄8 12

3

⁄4 103⁄4 42

(141) (251) (19) (273) (19.1)

* Add the “B” dimension and the diameter of the stud to achieve the
ANSI B16.5 Bolt Hole Circle Diameter.

B

A

FLOW

ANSI Class 300# Bolt Circle

ANSI Class 150#

Bolt Circle

WAFER SILENT

CHECK VALVES

- 206 -

300WC SERIES

WAFER SILENT CHECK VALVE

PRESSURE DROP VS FLOW RATE

(Sizes 2" - 6")

Installation Note:

1. For correct installation and maintenance please see our I&M manual.

2. Vertical installation (downward flow) – Consult factory.

3. Always use Strainers in upstream piping.

4. Not recommended for Steam Service

Size (inches) 2 21⁄2 3456

Min Cv (@ .3 PSID) 51 84 119 179 265 383

Cv (@ 1 PSID) 58 90 134 210 300 430

Max Cv (@ 10 PSID) 73 106 168 285 391 548

Cv Values

10

VALVE CRACKING PRESSURE

HORIZONTAL MOUNTED

(1) Pressure drop curves are based on water flow.
(2) Valve cracking pressure is equal to or less than 0.3 psid when mounted horizontally.
(3) Valve cracking pressure increases to between 0.75 and 1.25 psid when installed

vertically with flow upwards.

1

PRESSURE DROP (psi)

0.1
10

2

3

5

4

6

2-1/2

100

FLOW RATE (GPM)

1000

10000