Jenkins Cast Steel Valves - Associated Valve

Cast Steel Valves 

SINCE 1864 

JENKINS 

® 

Installation, Marking and Identification 

When purchasing valves, reference should also be made to MSS SP-92, “Valve User Guide.” Inquiries relating specifically to Jenkins prod- 

ucts may be referred to our factory or customer service department. 

Marking and identification of Jenkins steel valves conforms to ANSI 16.34 Standard Marking System for Valves, Fittings, Flanges and Unions 

(MSS SP-25) as well as the appropriate BS valve standard. 

It is important to properly identify valves in service to allow for the ordering of replacement parts or address questions or concerns relating 

to our products. Body markings and information shown on the identification plate helps to properly identify valves, allowing timely and accurate 

responses to such inquiries. 

Integrally cast body marking data includes the following information and helps to provide traceability: 

• Jenkins logo 

• Pressure class 

• Valve size 

• “Steel” symbol for the grade of material (i.e. WCB for carbon steel) 

• Heat number – on body and bonnet (cast or stamped) 

The body markings are supplemented by an identification plate which, depending on valve type and size, is mounted in the most practicable 

position. Tag location for gate and globe valves is typically on the valve yoke. Check valve tags are typically mounted on the rim cap. 

Identification plates bear the following information: 

• Catalog number 

• Valve size 

• Body material 

• Disc material 

• Stem material 

• Seat and trim material 

• Fluid recommendation 

• Pressure and temperature rating 

I.D. Tag 

XXXXX 

(SIZE) 

JENKINS 

STEEL 

(MATERIAL) 

(CLASS) 

(ID) 

Heat Number 

YY 

zzz 

Cast Bonnet Marking 

Material Symbol 

Pattern Number 

Foundry Symbol 

Heat Number (cast or stamped) 

(Not on flange edge unless recessed) 

Ring Joint Number 

(Stamped) 

When applicable 

Serial Number 

(Stamped) 

JENKINS 

CAT. NO. 

SIZE 

0 

100° F 

PSI/ 

PSI 

°F MAX 

ASME B16.34 / API 600 

BODY 

DISC 

SEAT 

STEM 

XXXXXX 

I.D. Tag Marking Information 

Cast or Stamped 

on raised pad 

Product Marking 

-3-

SINCE 1864 

JENKINS 

® 

Cast Steel Gate Valves 

General Information • Class 150, 300 and 600 Valves 

Features 

Flexible Wedge 

• Compensates for deformation of body due to pipe stresses 

• Will not stick when valve is closed hot and allowed to cool 

Welded-in Seat Ring 

• Seat ring is seal welded to eliminate leak path. 

Basic Standards 

These valves comply with the applicable requirements of the following standards: 

• API 600 

• API 598 

• ANSI B16.34 

• ANSI B16.10 

• ANSI B16.5 

Inspection Policy for Jenkins Valves 

Every Jenkins cast steel valve is subjected to a 100% pressure test according to API 598 requirements. 

Manufacturer’s material test reports and Inspection and Test Certifications are available upon request. 

Some of the additional inspections and tests performed are: 

• Random Radiograph Inspection of Body and Bonnet Castings to ASME B16.34 Appendix B. 

• Random Chemical Composition and Mechanical Properties Verification of Fasteners to ASTMA A-193/A-194. 

• Liquid Penetrate Inspection of Seat Rings. 

• Visual Inspection of Casting to MSS-SP-55. 

• Receiving, In-process, and Final Dimensional Inspections to Relevant Valve Standards. 

Other inspections or tests can be performed or evaluation criteria applied when specified by the customer. 

Notes 

• Standard material is ASTM A216 Grade WCB. 

• Standard trim is XU (13% CR to hardface) which is suitable for a wide range of applications. 

• See Engineering Data section for end flange dimensions and drilling templates. 

-4-


SINCE 1864 

JENKINS 

® 

Typical Bolted Bonnet Gate Valve Features 

Jenkins gate valves offer the ultimate in dependable service for steam, air, gas, oil, oil vapor, and high pressure installations. All have 

straight-through ports to assure minimum turbulence, erosion, and resistance to flow. They are available in a wide variety of trims. 

-5- 

1. Body: Body is cast to provide liberal strength to meet operating 

conditions and to permit unobstructed flow. Turbulence, erosion 

and pressure drop are minimized. 

Flanged End-Jenkins cast steel gate valves are available in 

flanged end and butt weld ends. All flanged and butt welding 

end valves are designed to conform to ANSI B16.5 and ANSI 

B16.34 standards. 

2. Integral Yoke & Bonnet: Some designs incorporate a twopiece 

bonnet and yoke. All bonnet assemblies are cast and 

finished to the same exacting tolerances as the bodies for 

accurate alignment of stems and ease of sealing. Bonnet joint 

varies from flat face gasket-joint to ring-type bonnet joint, 

depending on class. 

3. Seat Rings: Seat rings are seal welded to eliminate leak path 

behind rings and for long trouble-free service. The surfaces are 

precision ground to fit accurately with the disc. 

4. Disc: One piece flexible disc provides accurate alignment of 

mating seating surfaces so the valve can absorb piping strains 

without leakage. Also, it avoids any tendency to stick in the 

seated position. Valves are also furnished with solid wedge 

discs that have proved successful in millions of applications. 

5. Stem: The tee-head disc-stem connection prevents lateral 

strain on the stem for smooth, easy operation. Accurately cut 

threads engage the yoke sleeve for positive control of disc 

position. 

6. Yoke Sleeve 

7. Handwheel Nut 

8. Yoke Sleeve Retaining Nut 

9. Packing: Packing contains corrosion inhibitor to avoid stem 

pitting. Stuffing box is deep, assuring long packing life. 

10. Gland: Gland is a two-piece ball-type which exerts even pressure 

on the packing without binding the stem. 

11. Gland Flange 

12. Gland Eye Bolts: Eyebolts swing aside for ease in repacking 

the stuffing box. 

13. Gland Eye Bolt Nuts 

14. Bonnet Gasket 

15. Bonnet Studs: Number is dependent on valve size and class. 

16. Bonnet Nuts: Number is dependent on valve size and class. 

17. Groove-Pin 

18. Bonnet Bushing 

19. 

20. 

Handwheel: Gate valves can also be supplied with gear or 

motor operators. 

Hydraulic Grease Fitting: Hydraulic grease fitting provides 

for lubrication of yoke sleeve bearing surfaces (not shown).

SINCE 1864 

JENKINS 

® 


Figure J1009B8F 

Class 150 • Outside Screw & Yoke • Flexible Wedge Disc 

Material of Construction 

Description 

Material 

Body 

WCB 

Bonnet 

WCB 

Seat Rings 

Hardfaced 

Disc 

13% CR Overlay 

Stem 

410 SS 

Packing 

Graphite 

Bonnet Gasket 

Soft Iron 

Back Seat 

410 SS 

Yoke Sleeve 

D2 Ni-Resist 

Retaining Nut 

Malleable 

Gland 

Steel 

Gland Flange 


Eye Bolt 


Eye Bolt Nuts 

A563 Gr. A or O 

Pins 


Bonnet Studs 

A193 Gr. B7 

Bonnet Nuts 

A194 Gr. 2H 

Handwheel 

Malleable or Ductile 

Handwheel Nut 

Ductile or Steel 

I.D. Tags 

SS 

I.D. Pins 


Spacer 



Flanged 

Size Range: 

2 through 12 inches 

Pressure Temperature Rating 

Carbon Steel 

ASTM A216 Grade WCB 

285 psi @ -20°F to 100°F 

Note 

• 2" only-solid wedge 

C 

Industry Standards 

Steel Valves ANSI B16.34 

Face-to-Face/End-to-End ANSI B16.10 

Flange Dimensions ANSI B16.5 

Basic Design API 600 

Testing API 598 

A 

B 

Dimensions and Weights 

Valve 

Size 

Weight 

(pounds) 

Dimensions (inches) 

A B C 

2 40 7.00 14.88 7.87 

2 1 /2 57 7.50 18.11 7.87 

3 75 8.00 20.47 9.84 

4 114 9.00 23.90 9.84 

5 155 10.00 27.88 12.00 

6 189 10.50 31.61 13.78 

8 310 11.50 38.19 13.78 

10 455 13.00 45.59 15.75 

12 650 14.00 54.84 17.72 

-6-



SINCE 1864 

JENKINS 

® 



Flanged 

Size Range: 





740 psi @ -20°F to 100°F 

Note 



Description 

Material 

Body 

WCB 

Bonnet 

WCB 

Seat Rings 

Hardfaced 

Disc 


Stem 

410 SS 

Packing 

Graphite 

Bonnet Gasket 

Spiral Wound 

Back Seat 

410 SS 

Yoke Sleeve 

D2 Ni-Resist 

Retaining Nut 

Malleable 

Gland 


Gland Flange 


Eye Bolt 


Eye Bolt Nuts 


Pins 


Bonnet Studs 

A193 Gr. B7 

Bonnet Nuts 

A194 Gr. 2H 

Handwheel 


Handwheel Nut 


I.D. Tags 

SS 

I.D. Pins 


Spacer 


Grease Fittings 








C 


-7- 


Size 

Weight 

(pounds) 


A B C 

2 48 8.50 15.75 7.87 

2 1 /2 79 9.50 18.98 9.84 

3 114 11.12 21.42 9.84 

4 172 12.00 24.80 11.81 

5 235 15.00 28.38 12.00 

6 339 15.88 32.48 15.75 

8 500 16.50 39.57 15.75 

10 760 18.00 49.50 18.00 

12 1020 19.75 57.25 20.00 

A 

B

SINCE 1864 

JENKINS 

® 





Description 

Material 

Body 

WCB 

Bonnet 

WCB 

Seat Rings 

Hardfaced 

Disc 


Stem 

410 SS 

Packing 

Graphite 

Bonnet Gasket 

Ring Joint 

Back Seat 

410 SS 

Yoke Sleeve 

D2 Ni-Resist 

Retaining Nut 

Malleable 

Gland 


Gland Flange 


Eye Bolt 


Eye Bolt Nuts 


Pins 


Bonnet Studs 

A193 Gr. B7 

Bonnet Nuts 

A194 Gr. 2H 

Handwheel 


Handwheel Nut 


I.D. Tags 

SS 

I.D. Pins 


Spacer 


Grease Fittings 



Flanged 

Size Range: 





1480 psi @ -20°F to 100°F 

Note 


C 







A 

B 



Size 

Weight 

(pounds) 


A B C 

2 84 11.50 18.00 10.00 

2 1 /2 130 13.00 20.50 10.00 

3 160 14.00 22.62 12.00 

4 300 17.00 28.62 14.00 

6 640 22.00 38.62 18.00 

8 1080 26.00 47.25 20.00 

10 1550 31.00 58.25 25.00 

12 2100 33.00 68.12 28.00 

-8-

Cast Steel Globe Valves 

SINCE 1864 

JENKINS 

® 


Features 


• Seat ring is seal welded to eliminate leak path. behind rings 



• API 598 

• ANSI B16.34 

• ANSI B16.10 

• ANSIB16.5 

Notes 




-9-

SINCE 1864 

JENKINS 

® 


Typical Globe Valve Features 

Jenkins globe valves are highly efficient for services requiring frequent operation and throttling when pressure drop across the valve is about 

20% of inlet pressure. Closer throttling, creating higher pressure drops may cause cavitation or excessive velocities which could cause high 

noise levels, vibration and possible damage to the valve or adjacent piping. Globe valves can be equipped with optional operators and are 

available with a variety of trims to match service requirements. 

1. Body: Body is cast with heavy sections reinforced at points 

subjected to the greatest stress. Valves are available in both 

flanged and butt welding ends. All conform to ANSI specifications. 

2. Bonnet 

3. Bonnet Seat Ring 

4. Disc 

5. Disc Stem Ring: Disc Stem Ring connects the disc to the stem, 

permitting the disc to swivel and aid in securing tight seating for 

trouble-free service. 

6. Disc Washer 

7. Stem: Stem has long engagement with yoke bushing for accurate 

seating. 

8. Bonnet Bushing 

9. Yoke Bushing 

10. Wheel Nut 

11. Packing 

12. Gland: Gland is a two-piece, ball-type which exerts even 

pressure on the packing without binding the stem. 

13. Gland Flange 

14. Gland Eye Bolts: Eye bolts are securely fastened to the bonnet 

yet swing away to permit easy access to the stuffing box. 

15. Bonnet Gasket: Bonnet gasket provides a positive seal against 

leakage. Class 150 and 300 valves have a male/female bonnet 

joint. A ring-type gasket is employed in Class 600. 

16. Bonnet Studs 

17. Bonnet Nuts 

18. Pin 

19. Handwheel 

-10-

Figure J1040B2 


SINCE 1864 

JENKINS 

® 

Class 150 • Outside Screw & Yoke • Bolted Bonnet 

Figure 1040B2 

Flanged 

Size Range: 





285 psi @ -20°F to 100°F 


Description 

Material 

Body 

WCB 

Bonnet 

WCB 

Seat Rings 

Hardfaced 

Disc 


Stem 

410 SS 

Packing 

Graphite 

Bonnet Gasket 

Soft Iron 

Back Seat 

410 SS 

Disc Stem Nut 

410 SS 

Disc Washer 


Gland 

410 SS 

Gland Flange 

WCB 

Eye Bolt 


Eye Bolt Nuts 


Pins – 

Bonnet Studs 

A193 Gr. B7 

Bonnet Nuts 

A194 Gr. 2H 

Handwheel 

WCB 

Handwheel Nut 

A194 Gr. 2H 

I.D. Tags 

SS 

I.D. Pins 







C 


Valve Weight Dimensions (inches) 

Size (pounds) A B C 

B 

2 51 8.00 13.62 7.87 

2 1 /2 62 8.50 15.16 7.87 

3 75 9.50 16.61 9.84 

4 132 11.50 19.84 11.81 

5 199 14.00 23.00 12.00 

6 231 16.00 23.62 15.75 

8 525 19.50 24.65 15.75 

10 900 24.50 28.03 17.72 

12 900 27.50 39.50 24.00 

A 

-11-

SINCE 1864 

JENKINS 

® 

Cast 

Steel Globe Valves 




Description 

Material 

Body 

WCB 

Bonnet 

WCB 

Seat Rings 

Hardfaced 

Disc 


Stem 

410 SS 

Packing 

Graphite 

Bonnet Gasket 

Spiral Wound 

Back Seat 

410 SS 

Disc Stem Nut 

410 SS 

Disc Washer 


Gland 

410 SS 

Gland Flange 

WCB 

Eye Bolt 


Eye Bolt Nuts 


Pins – 

Bonnet Studs 

A193 Gr. B7 

Bonnet Nuts 

A194 Gr. 2H 

Handwheel 

WCB 

Handwheel Nut 

A194 Gr. 2H 

I.D. Tags 

SS 

I.D. Pins 



Flanged 

Size Range: 





740 psi @ -20°F to 100°F 


C 






B 



A 

2 59 10.50 16.65 7.87 

2 1 /2 88 11.50 17.83 9.84 

3 128 12.50 20.31 9.84 

4 191 14.00 22.91 13.78 

5 290 15.75 27.50 12.00 

6 345 17.50 25.91 17.72 

8 750 22.00 36.00 20.00 

10 1100 24.50 41.65 34.02 

12 1100 28.00 37.25 24.00 

-12-



SINCE 1864 

JENKINS 

® 



Flanged 

Size Range: 





1480 psi @ -20°F to 100°F 


Description 

Material 

Body 

WCB 

Bonnet 

WCB 

Seat Rings 

Hardfaced 

Disc 


Stem 

410 SS 

Packing 

Graphite 

Bonnet Gasket 

Ring Joint 

Back Seat 

410 SS 

Disc Stem Nut 

410 SS 

Disc Washer 


Gland 

410 SS 

Gland Flange 

WCB 

Eye Bolt 


Eye Bolt Nuts 


Pins – 

Bonnet Studs 

A193 Gr. B7 

Bonnet Nuts 

A194 Gr. 2H 

Handwheel 

WCB 

Handwheel Nut 

A194 Gr. 2H 

I.D. Tags 

SS 

I.D. Pins 

SS 






C 




B 

2 88 11.50 18.75 10.00 

2 1 /2 126 13.00 20.25 10.00 

3 160 14.00 23.00 14.00 

4 270 17.00 26.50 18.00 

6 550 22.00 27.00 20.00 

8 1000 26.00 28.50 22.00 

A 

-13-

SINCE 1864 

JENKINS 

® 

Cast Steel Check Valves 


Features 

Disc Type 

• Class 150 valves-2"-12" and Class 300 valves-sizes 2"-8" feature an internally mounted hinge pin 

which eliminates a leak path 

• For class 600 valves, a ring joint bonnet gasket assures positive seal against leakage and accurate 

alignment of moving parts 


• Seat ring is seal welded to eliminate leak path. behind rings 



• API 598 

• ANSI B16.34 

• ANSI B16.10 

• ANSI B16.5 

Notes 




-14-

Cast Steel Swing Check Valve 

SINCE 1864 

JENKINS 

® 

Typical Swing Check Valve Features 

Check valves are automatically actuated. They are opened and sustained in the open position by the force of velocity pressure, and 

closed by the force of gravity. Seating load and resultant tightness is dependent upon back pressure. The disc and associated moving 

parts may be in a constant state of movement if the velocity pressure is not sufficient to hold the valve in a wide open and stable 

position. Premature wear and noisy operation or vibration of the moving parts can be avoided by selecting the size of check valve on the 

basis of flow conditions. The minimum velocity required to hold a swing check valve in the wide open and stable position has been 

developed by analysis of extensive test data and is expressed by the formula: 

v= 60 v 

The value for v is equal to flow in feet per second and v is the specific volume of fluid in cubic feet per pound. Sizing swing check valves 

on this basis may often result in the use of valves that are smaller than the pipe in which they are used, necessitating the use of reducers 

for installation. The pressure drop will be no greater than that of the larger valve that is only partially open, and valve life will be greatly 

extended. The added bonus, of course, is the lower cost of the smaller valve. 

There is no tendency for the seating surfaces of swing check valves to gall or score, because the disc meets the flat seat squarely 

without rubbing contact upon closing. 

Jenkins cast steel swing check valves can be furnished with outside lever and adjustable weight when so ordered. With the lever and 

weight mounted so that the weight assists the disc in closing, the valve closes more rapidly when flow stops, thus minimizing reversal of 

flow and resultant surge and shock. With the lever and weight mounted to balance the weight of the disc, the valve becomes more 

sensitive to low inlet velocities. 

Swing check valves are used to prevent reversal of flow in horizontal or vertical pipe lines. In vertical lines, or for any angle from horizontal 

to vertical, they can be used for upward flow only. 

1. Body: Strong construction assures 

maximum safety over the recommended 

pressure and temperature 

range. Both flange and butt weld ends 

are available. 

2. Cap: permits access to hinge and 

disc without removing valve from line. 

3. Disc: is designed to close on its own 

weight to stop backflow from gaining 

sufficient velocity to create damaging 

shock. 

4. Disc Nut Pin 

5. Hinge 

6. Cap Studs 

7. Cap Stud Nuts 

8. Cap Gasket 

9. Body Seat Ring (welded in) 

10. Disc Washer 

12. Disc Nut 

-15-

SINCE 1864 

JENKINS 

® 


Figure 

J1025B2 

Class 150 • Bolted Cap 


Description 

Material 

Body 

WCB 

Cap 

WCB 

Seat Ring 

Hardfaced 

Disc 


Hinge 

WCB 

Pins, Hinge 

410 SS 

Disc Washer 


Cap Screw 

A307 Gr. B 

Cap Gasket 

Soft Iron 

Cap Studs 

A193 Gr. B 

Cap Nuts 

A194 Gr. 2H 

I.D. Tags 

SS 

I.D. Pins 



Flanged 

Size Range: 





285 psi @ -20°F to 100°F 






B 



Size (pounds) A B 

A 

2 33 8.00 6.75 

2 1 /2 57 8.50 7.12 

3 59 9.50 7.38 

4 93 11.50 8.50 

5 152 13.00 9.50 

6 165 14.00 10.25 

8 275 19.50 11.88 

10 440 24.50 13.88 

12 680 27.50 15.75 

-16-

Figure 

J1026B2 


SINCE 1864 

JENKINS 

® 



Flanged 

Size Range: 





740 psi @ -20°F to 100°F 


Description 

Material 

Body 

WCB 

Cap 

WCB 

Seat Ring 

Hardfaced 

Disc 


Hinge 

WCB 

Pins, Hinge 

410 SS 

Disc Washer 


Cap Screw 

A307 Gr. B 

Cap Gasket 

Spiral Wound 

Cap Studs 

A193 Gr. B 

Cap Nuts 

A194 Gr. 2H 

I.D. Tags 

SS 

I.D. Pins 








B 



2 46 10.50 6.75 

2 1 /2 66 11.50 7.38 

3 86 12.50 8.50 

4 154 14.00 9.25 

5 255 15.75 10.62 

6 276 17.50 11.88 

8 420 21.00 13.38 

10 640 24.50 13.88 

12 1000 28.00 16.62 

A 

-17-

SINCE 1864 

JENKINS 

® 


Figure 

J1028B2 



Description 

Material 

Body 

WCB 

Cap 

WCB 

Seat Ring 

Hardfaced 

Disc 


Hinge 

WCB 

Pins, Hinge 

410 SS 

Disc Washer 


Cap Screw 

A307 Gr. B 

Cap Gasket 

Ring Joint 

Cap Studs 

A193 Gr. B 

Cap Nuts 

A194 Gr. 2H 

I.D. Tags 

SS 

I.D. Pins 



Flanged 

Size Range: 





1480 psi @ -20°F to 100°F 






B 




A 

2 62 11.50 6.88 

2 1 /2 84 13.00 7.88 

3 115 14.00 9.12 

4 192 17.00 11.62 

6 495 22.00 14.25 

8 780 26.00 15.75 

10 1400 31.00 18.12 

12 1750 33.00 20.50 

-18-

Cast Steel Valves 

SINCE 1864 

JENKINS 

® 

Pressure-Temperature Ratings 

Pressure-Temperature Ratings 

(comply with ANSI B16.34-1981 – Standard Class) 

Bolted Bonnet Valves 

Class Temp. Working Pressures, psig Class Temp. Working Pressures, psig 

A216 A217 A217 A217 A352 A352 A216 A217 A217 A217 A362 A362 

F WCB C5W C6 WC9 LCB LC3 F WCB C5W C6 WC9 LCB LC3 

-20 t0 100° 285 290 290 290 265 290 -20 to 100° 1480 1500 1500 1500 1390 1500 

200 260 260 260 260 250 260 200 1350 1500 1425 1430 1315 1500 

300 230 230 230 230 230 230 300 1315 1455 1345 1355 1275 1465 

400 200 200 200 200 200 200 400 1270 1410 1315 1295 1235 1410 

500 170 170 170 170 170 170 500 1200 1330 1285 1280 1165 1330 

600 140 140 140 140 140 140 600 1095 1210 1210 1210 1065 1210 

650 125 125 125 125 125 125 650 1075 1210 1210 1210 1065 1210 

700 110 110 110 110 – – 700 1065 1135 1135 1135 – – 

Class 

Class 

150 600 

800 80 80 80 80 – – 800 825 995 1015 1015 – – 

850 651 65 65 65 – – 850 5351 880 975 975 – – 

900 501 50 50 50 – – 900 3451 705 900 900 – – 

950 351 35 35 35 – – 950 2051 520 755 755 – – 

1000 201 20 20 20 – – 1000 1051 365 445 535 – – 

1050 – 202 20 20 – – 1050 _ 280 275 400 _ _ 

1100 _ 202 _ _ _ _ 1150 _ 205 190 225 _ _ 

1150 _ 202 _ _ _ _ 1150 _ 140 _ _ _ _ 

1200 _ 202 _ _ _ _ 1200 _ 90 _ _ _ _ 

-20 to 100° 740 750 750 750 695 750 -20 to 100° 2220 2250 2250 2250 2085 2250 

200 675 750 710 715 655 750 200 2025 2250 2135 2150 1970 2250 

300 655 730 675 675 640 730 300 1970 2185 2020 2030 1915 2185 

400 635 705 660 650 620 705 400 1900 2115 1975 1945 1850 2115 

500 600 665 640 640 585 665 500 1795 1995 1925 1920 1745 1995 

600 550 605 605 605 535 605 600 1640 1815 1815 1815 1600 1815 

650 535 590 590 590 525 590 650 1610 1765 1765 1765 1570 1765 

700 535 570 570 570 _ _ 700 1600 1705 1705 1705 _ _ 

750 505 530 530 530 _ _ 750 1510 1595 1595 1595 _ _ 

Class 

Class 

300 900 

800 410 500 510 510 _ _ 800 1235 1490 1525 1525 _ _ 

850 2701 440 485 485 _ _ 850 8051 1315 1460 1460 _ _ 

900 1701 355 450 450 _ _ 900 5151 1060 1350 1350 _ _ 

950 1051 260 380 380 _ _ 950 3101 780 1130 1130 _ _ 

1000 501 190 225 270 _ _ 1000 1551 575 670 805 _ _ 

1050 _ 140 140 200 _ _ 1050 _ 420 410 595 _ _ 

1100 _ 105 95 115 _ _ 1100 _ 310 290 340 _ _ 

1150 _ 70 _ _ _ _ 1150 _ 205 _ _ _ _ 

1200 _ 45 _ _ _ _ 1200 _ 135 _ _ _ _ 

-20 to 100° 990 1000 1000 1000 925 1000 -20 to 100° 3705 3750 3750 3750 3470 3750 

200 900 1000 950 955 875 1000 200 3375 3750 3560 3580 3280 3750 

300 875 970 895 905 850 970 300 3280 3640 3365 3385 3190 3640 

400 845 940 880 865 825 940 400 3170 3530 3290 3240 3085 3530 

500 800 885 855 855 775 885 500 2995 3325 3210 3200 2910 3325 

600 730 805 805 805 710 805 600 2735 3025 3025 3025 2665 3025 

650 715 785 785 785 695 785 650 2685 2940 2940 2940 2615 2940 

700 710 755 755 755 _ _ 700 2665 2840 2840 2840 _ _ 

750 670 710 710 710 _ _ 750 2520 2660 2660 2660 _ _ 

Class 

Class 

400 1500 

800 550 665 675 675 _ _ 800 2060 2485 2540 2540 _ _ 

850 3551 585 650 650 _ _ 850 13401 2195 2435 2435 _ _ 

900 2301 470 600 600 _ _ 900 8601 1765 2245 2245 _ _ 

950 1401 350 505 505 _ _ 950 5151 1305 1885 1885 _ _ 

1000 701 255 300 355 _ _ 1000 2601 960 1115 1340 _ _ 

1050 _ 190 185 265 _ _ 1050 _ 705 685 995 _ _ 

1100 _ 140 130 150 _ _ 1100 _ 515 480 565 _ _ 

1150 _ 90 _ _ _ _ 1150 _ 345 _ _ _ _ 

1200 _ 60 _ _ _ _ 1200 _ 225 _ _ _ _ 

-19-

SINCE 1864 

JENKINS 

® 

Technical Data 

Temperature Conversions 

Centigrade to Fahrenheit – Fahrenheit to Centigrade 

Locate temperature in middle column. If in degrees Centigrade, read Fahrenheit equivalent in 

right-hand column; if in degrees Fahrenheit, read Centigrade equivalent in left-hand column. 

Conversion Formulas: °C = 5/9 (°F-32) 

°F = 9/5 (°C+32) 

-20-

SINCE 1864 

JENKINS 

® 

Performance In Any Application 

In any fluid handling system, valves are the controlling element: starting or stopping flow, regulating or throttling 

flow, preventing backflow, or relieving and regulating pressure. 

Jenkins valves are universally accepted by industry for virtually every application ranging from vacuum pressures 

and cryogenic temperatures to elevated pressures and temperatures. 

Gate Valves 

Since Jenkins valves are used in a variety of applications, the following descriptions may provide a basic guideline 

in the selection of steel valves. 

Gate valves serve as efficient stop valves with flow in either direction. They are commonly used where a minimum 

pressure drop is important. Throttling is not recommended because partially open gate valves exhibit flow 

characteristics not conducive to accurate and consistent flow control. Also, the valves may be damaged by the 

high velocity across the seats. They function best fully open or fully closed. 

Globe Valves 

Swing Check Valves 

Globe valves are ideal for throttling service. Their flow characteristics permit accurate and repeatable flow 

control. However, caution must be exercised to avoid extremely close throttling when pressure drop exceeds 

20%. This creates excessive noise, vibration and possible damage to valves and piping. When these conditions 

are anticipated, consult Jenkins for recommendations. 

Swing Check valves prevent reversal of flow through pipe lines. Most Jenkins swing check valves can be 

installed in horizontal or vertical, upward flow, piping. They offer low resistance to flow and are particularly suited 

to low velocity service. 

How to Specify and Order the Correct Valves 

How to Specify and Order Valves 

Size 

Nominal size of the pipeline into which the valve will be placed must be 

determined. Comprehensive data on flow characteristic and pipe properties 

are contained in the Engineering Data Catalog. 

Valve Material 

The following facts should be considered in determining the correct valve 

material. 

• The media to be controlled. 

• The temperature of the media. 

• The possible extraordinary stresses affecting the valve. 

• Safety standards and/or piping codes. 

Pressure/Temperature Rating 

Please pay careful attention that the PRESSURE/TEMPERATURE RATINGS 

shown on page 19 in this catalog are in keeping with the requirements of the 

service. 

Valve End Connections 

Considerations as to pipeline integrity, future maintenance, corrosion factors, 

field assembly, weight and safety should be given in determining the 

method of connecting the valve in the pipeline. 

CAUTION: When servicing, disassembling or disposing of valves containing asbestos gaskets or packing, avoid breathing dust or fibers from these parts. 

Disposal of asbestos and asbestos related products should comply with local, state and federal laws and regulations. 

-2-

Jenkins Cast Steel Valves - Associated Valve

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