FORUM DSI User Manual

Smart Solutions. Powerful Products.

DSI® Forged Steel

Carbon, Stainless and Alloy

Gate, Globe and Check Valves

Manufacturer of Quality Valve

Products Around the Globe

At Forum™ Energy Technologies we are committed to improving our clients’ operational and financial performance by supplying the most comprehensive range of valve products in the industry through our family of trusted valve brands.

For years, DSI® Forged Steel Valves have been satisfying the needs of Petroleum Refineries, Chemical Processing Plants, Power Generating Plants, and other processing facilities throughout the world.

Our Forged Steel Valves are designed, engineered and manufactured in strict conformance to API, ASTM, ASME, ANSI and other recognized standards. DSI® Forged Steel Valves are not only characterized by outstanding performance, reliability and quality, they’re also known for their standard features normally optional

in other brands.

Low Fugitive Emission Service

DSI® standard Forged Steel Gate, Globe and Check Valves are designed and manufactured to ensure leakage of less than 100 ppm (parts per million) of volatile organic compounds (VOC).

Standard Features of

DSI® Forged Steel Valves

•All DSI® forged carbon steel valves maintain a .22% maximum carbon content and are normalized to further refine the grain and homogenize the microstructure.

•All valves meet NACE conformance.

•DSI® forged steel valves come standard with a Stellite® #6 seating surface. The Stellite® #6 is applied by an automatic GTAW process, maintaining a minimum thickness of 0.05 inches.

•Valves are furnished with non-asbestos Grafoil® packing. The top and bottom wiper rings are braided graphite, while the center rings are die-formed Grafoil® containing an inorganic passivating inhibitor for corrosion and oxidation resistance.

•The DSI® bolted bonnet and bolted cap valves not utilizing a ring joint connection are fitted with a 316 Stainless Steel spiral wound Grafoil® filled gasket.

•All flanged DSI® forged steel valves through Class 2500 are integrally forged to avoid the potential leak path that exist when welding flanges onto valve bodies.

•Welded bonnet valves are initially joined by threading the body-bonnet joint together, then welding by automatic GMAW. All welds are inspected after welding assuring quality control.

•DSI® forged steel valves contain no copper bearing alloys.

•Every DSI® forged steel valve is manufactured with a two-piece self-aligning gland flange assembly which ensures even compression of the stuffing box during assembly and repacking.

Contents

DSI® Forged Steel Gate, Globe and Check Valves

Company Profile and Features .........................................	2	Globe Valves .......................................................	13 -19
Product Range, Testing, Modifications & Accessories ................	3	Check Valves ......................................................	20-28
Figure Numbers, Trim Chart ............................................	4	Pressure Temperature Charts ..........................................	29
Gate Valves ..........................................................	5 -12	Flow Coefficients (Cv) and Cracking Pressure Charts ...............	30

2

Product Range, Testing & Modifications

DSI® offers NDE Testing and a variety of product modifications, saving our customers time and resources by eliminating the need for multiple purchase orders, time and transportation costs.

A single warranty then applies to each modified product, with each product inspected for quality and conformance to our customer’s specifications and industry standards.

DSI® Forged Steel Valve Families

DSI® offers a broad range of standard commodity forged, flanged and take-off style Gate, Globe and Check valves.

Size Range: 1/2" thru 2" Class Range: 150 -4500

Style: Bolted, welded or union bonnet connection of either inside screw or outside screw and yoke design.

Materials: A105N, LF2, LF3, F316, F304, F316L, F5, F9, F11, and F22

Standard

Production Valves

Available Modifications for DSI® Forged Steel Valves
• Packing and Gasket Changes	Flanged End
• End Connection Modifications	Production Valves
• Trim Changes
• Cryogenic Gas Columns
• Teflon® Disc Inserts
• Oxygen & Chlorine Cleaning & Packaging
• Customer Specified Coatings
• API Performance Testing
NDE Testing Available
• Dye Penetrant Test	Take-off
• Magnetic Particle Test	Type Valves
• PMI (Positive Material Identification)
• Ultrasonic Testing

Manufactured in Strict Conformance With the Following Industry Standards:

	Industry Standard	Specification
	API 602	Compact steel gate, globe and check valves
	API 598	Valve Inspection and Test
	ANSI /ASME B16.34	Steel valve, flanged and butt-welding end
	ANSI /ASME B16.5	Steel pipe flanges and flanged fittings
	ANSI /ASME B16.10	Face-to-face and end-to-end dimensions of ferrous valves
	ANSI /ASME B16.11	Forged steel fittings, socket welding and threaded
	ANSI /ASME B1.20.1	Pipe threads, general purpose
	ANSI /ASME B31.3	Chemical plant and petroleum refinery piping
	MSS SP -25	Standard marking system for valves, fittings, flanges and unions
	MSS-SP-6	Standard finishes for contact faces of pipe, flanges and connecting end flanges of valves and fittings
	NACE MR0175 / ISO 15156	Petroleum and natural gas industries, materials for use in H2S-containing
		environments in oil and gas production
	NACE MR0103	Materials resistant to sulfide stress cracking in corrosive petroleum refining environments

Note: All information is subject to change without notice.

3

Figure Numbers and Trim Chart

Specifying DSI® Forged Steel Valve Figure Numbers

Example: 4121T-A8-18 This number represents a Class 800, Gate Valve Type, Threaded (Standard) End-Port, BB-OS&Y Design Style, TFE Packing, A105N Body Material, Stellite® Seats for Trim and NACE conformance.

4

1

2

1

T

–

A

8

–

18

Class

Type

End-Port

Body/

Special

Body Material

Trim

Other

Bonnet Style

1

1

1

1

BW

A

O

1

25

18

150

Gate

SW-Std.

BB-OS&Y/BC

Buttweld

A105N

F53

410

F321

NACE

2

2

2

2

Ends

B

P

2

26

20

300

Globe

Thrd-Std.

UB-OS&Y/

CT

F5

F304L

F304

F347

Oxygen

3

3

3

UC

Ext. Couplet

C

Q

5

27

Clean

600

Lift Check

Flgd-Std.

3

EB

F11

I800

Full Stellite®

F91

22

4

4

4

WB-OS&Y/

Ext.

D

R

8

28

Cryogenic

800

Swing Check

F. Thrd x

WC

Bonnet

F316

F51

Stellite® Seats

Alloy 20

24

6

5

M. Thrd

4

FB

E

S

9

29

Bellows

1500

Ball Check

5

PS-OS&Y/

Full Port

F316/F316L

Monel®

Monel®

F316L

26

7

6

F. Thrd x

PSC

FF

F

T

10

30

Alkylation

2500

Vert. Ball

M. SW

5

Flat

LF2

F91

F316

F44

8

Check

6

UB-IS

Faced Ends

G

U

11

31

4500

7

SW-Full

6

R

F9

A20

Monel® HFS

I825 HFS

Needle /

7

WB-IS

RTJ Ends

H

V

12

32

Globe

Thrd-Full

7

S

F22

F317

F316 HFS

I825

8

8

RTJ-BB/BC

Parallel Slide

J

W

15

33

Stop Check

Flgd-Full

8

SC

F347

I625

F304 HFS

I625

Globe

9

WB-PS

Special Class

K

X

16

34

IREB-Std

T

LF3

I825

F316L HFS

F316H

0

TFE Packing

L

Y

17

35

F. SW x F. Thrd

Y

F304

F55

F321 HFS

I800

Y-Pattern

M

Z

19

36

F321

F44

F347 HFS

F347H

N

20

51

F317L

F317

Duplex SS

21

53

F91 HFS

Hastelloy® C

22

54

F304L

F304H

24

55

F317L

F55

API Trim

Trim No.	Material	Seat / Disc		Stem	Notes
1	410	410	410	410
2	304	304	304	304
3	F310	310	310	310
4	Hard 410	410	410	410	Seats 750 BHN min.
5	Hardfaced	Hardfaced	Hardfaced	410
5A	Hardfaced	Ni-Cr	Ni-Cr	410
6	410 and Cu-Ni	Cu-Ni	Cu-Ni	410
7	410 and Hard 410	410	410	410	Seats 750 BHN min.
8	410 and Hardfaced	Hardfaced	410	410
8A	410 and Hardfaced	Ni-Cr	410	410
9	Monel®	Monel®	Monel®	Monel®
10	316	316	316	316
11	Monel® and Hardfaced	Hardfaced	Monel®	Monel®
12	316 and Hardfaced	Hardfaced	316	316
13	Alloy 20	Alloy 20	Alloy 20	Alloy 20
14	Alloy 20 and Hardfaced	Hardfaced	Alloy 20	Alloy 20
15	304 and Hardfaced	Hardfaced	Hardfaced	304
16	316 and Hardfaced	Hardfaced	Hardfaced	316

4

Footnotes:
BB • Bolted Bonnet	BC • Bolted Cover
WB • Welded Bonnet	WC • Welded Cover
UB • Union Bonnet	UC • Union Cover
PS • Full Penetration	IS • Inside Screw
OS&Y • Outside Screw & Yoke

IREB • Integrally Reinforced Extended Body (male couplet x female threaded)

Note: All information is subject to change without notice.

DSI® Forged Steel Gate Valves

Class 150, 300, 600, 800, 1500 & 2500

Parts & Materials, Availability

No.	Description	ASTM A105N	ASTM A350			ASTM A182
			LF2	F316/L		F5	F9	F11
1	Body	A105N	LF2	F316/L		F5	F9	F11
2	Seat Ring*	410 + HF	316 + HF	316 + HF		410 + HF	410 + HF	410 + HF
3	Wedge*	410	316	316		410	410	410
4	Stem*	410	316	316		410	410	410
5	Gasket			316 + Graphite (SPW)
6	Bonnet	A105N	LF2	F316 /L		F5	F9	F11
7	Bonnet Bolt	B7M	L7M	B8		B16	B16	B16
8	Packing			Graphite
9	Gland*	410	316	316		410	410	410
10	Gland Flange	A105N	LF2	316		A105N	A105N	A105N
11	Gland Nut	2HM	7M	Gr. 8		2HM	2HM	2HM
12	Gland Bolt	B7M	L7M	B8		B7M	B7M	B7M
13	Yoke Sleeve (Nut)				416
14	Handwheel			Carbon Steel
15	Handwheel Nut	Carbon Steel	Carbon Steel	Gr. 8		Carbon Steel	Carbon Steel	Carbon Steel
16	Name Plate	Aluminum	Aluminum	Stainless Steel		Aluminum	Aluminum	Aluminum

Additional Materials

	No.	Description			ASTM A182
			F321	F347	F51	F22	F91
	1	Body	F321	F347	F51	F22	F91
	2	Seat Ring*	321+ HF	347+ HF	S31803	410 + HF	410 + HF
	3	Wedge*	321	347	F51	410	410
	4	Stem*	321	347	S31803	410	410
	5	Gasket	316 + Graphite	347+ Graphite	N06625+Graphite	316 + Graphite	316 + Graphite
			(SPW)	(SPW)	(SPW)	(SPW)	(SPW)
	6	Bonnet	F321	F347	F51	F22	F91
	7	Bonnet Bolt	B8	B8	B8	B16	B16
	8	Packing			Graphite
	9	Gland*	321	347	S31803	410	410
	10	Gland Flange	321	347	S31803	A105N	A105N
	11	Gland Nut	Gr. 8	Gr. 8	Gr. 8	2HM	2HM
	12	Gland Bolt	B8	B8	B8	B7M	B7M
	13	Yoke Sleeve (Nut)	AISI 416	416	416	416	416
	14	Handwheel			Carbon Steel
	15	Handwheel Nut	Gr. 8	Gr. 8	Gr. 8	Carbon Steel	Carbon Steel
	16	Name Plate	Stainless Steel	Stainless Steel	Stainless Steel	Aluminum	Aluminum

*Material may vary based on trim. Additional materials available upon request.

Note: All information is subject to change without notice.

5

DSI® Forged Steel Gate Valve

API 602 • Bolted & Welded Bonnet

Parts & Materials

No.	Description	Material
1	Body	A105N
2	Seat Ring*	410 + HF
3	Wedge*	410
4	Stem*	410
5	Gasket	316 +Graphite (SPW)
6	Bonnet	A105N
7	Bonnet Bolt	B7M
8	Packing	Graphite
9	Gland*	410
10	Gland Flange	A105N
11	Gland Nut	2HM
12	Gland Stud	B7M
13	Yoke Sleeve / Stem Nut	416
14	Handwheel	Carbon Steel
15	Handwheel Nut	Carbon Steel
16	Name Plate	Aluminum

*Material may vary based on trim.

Dimensional Data and Weight

Class 800, Reduced Port

			Dimensions (in.), Reduced Port
	Valve
			B	C	D
	Size	A	Center			Weight
				Handwheel	Port
	(in.)	End to End	to Top			(lbs.)
				Diameter	Diameter
			(open)
	1/4	3.15	5.71	3.15	0.31	3.97
	1/2	3.15	5.71	3.15	0.39	3.75
	3/4	3.54	6.08	3.15	0.55	4.63
	1	4.33	7.31	3.94	0.71	7.94
	11/4	5.00	8.58	4.72	0.94	11.24
	11/2	5.00	9.77	5.00	1.16	15.43
	2	5.12	10.63	5.12	1.44	20.06

Class 1500, Reduced Port

			Dimensions (in.), Reduced Port
	Valve
			B	C	D
	Size	A	Center			Weight
				Handwheel	Port
	(in.)	End to End	to Top			(lbs.)
				Diameter	Diameter
			(open)
	1/2	3.54	6.02	3.07	0.39	5.50
	3/4	4.33	7.13	3.94	0.55	8.36
	1	4.72	8.65	4.72	0.71	11.88
	11/4	5.12	9.60	5.51	0.94	17.60
	11/2	5.12	10.79	5.51	1.14	22.44
	2	5.91	11.97	6.69	1.42	33.00

Note: All information is subject to change without notice.

	C
14	15
11	16
10	13
12	9
B
6	8
4	7
1	5
	D
	FLOW
3	2
	A

Class 800, Full Port

			Dimensions (in.), Full Port
	Valve
			B	C	D
	Size	A	Center			Weight
				Handwheel	Port
	(in.)	End to End	to Top			(lbs.)
				Diameter	Diameter
			(open)
	1/4			—
	1/2	3.54	6.08	3.07	0.55	4.85
	3/4	4.33	7.30	3.94	0.71	8.16
	1	5.00	8.58	4.65	0.94	11.90
	11/4	5.00	10.08	5.51	1.16	16.31
	11/2	5.12	10.90	5.51	1.44	21.16
	2	5.91	12.88	6.69	1.89	31.31

Class 1500, Full Port

			Dimensions (in.), Full Port
	Valve
			B	C	D
	Size	A	Center			Weight
				Handwheel	Port
	(in.)	End to End	to Top			(lbs.)
				Diameter	Diameter
			(open)
	1/2	3.54	7.80	3.94	0.55	8.38
	3/4	4.33	9.55	4.72	0.71	11.90
	1	4.72	11.06	5.51	0.94	17.64
	11/4	5.12	12.25	6.69	1.14	22.49
	11/2	5.12	14.33	6.69	1.44	33.00
	2	5.91	14.93	6.69	1.57	33.07

6

DSI® Forged Steel Gate Valve

API 602 • Bolted & Welded Bonnet

Dimensional Data, Weight and Figure Numbers

Class 2500, Full Port

	Valve		Dimensions (in.), Full Port			Weight
		A	B	C	D
	Size (in.)					(lbs.\
		End to End	Center to Top (open)	Handwheel Diameter	Port Diameter
	1/2	4.33	6.89	3.94	0.39	7.72
	3/4	4.72	8.31	4.72	0.55	12.13
	1	5.12	9.55	5.51	0.71	16.53
	11/4	5.12	10.98	6.69	0.94	22.05
	11/2	8.27	12.17	6.69	1.14	35.27
	2	9.45	14.01	10.24	1.44	39.68

Figure Numbers

Port	Bonnet	Class 800	Class 1500	Class 2500	Ends
		4121	6121	—	Threaded
	Bolted	4111	6111	—	Socketweld
Reduced		4101	6101	—	Thrd x SW
		4123	6123	—	Threaded
	Welded	4113	6113	—	Socketweld
		4103	6103	—	Thrd x SW
		4171	6171	—	Threaded
	Bolted	4161	6161	—	Socketweld
Full		4101FB	6101FB	—	Thrd x SW
		4173	6173	7173	Threaded
	Welded	4163	6163	7163	Socketweld
		4103FB	6103FB	7103	Thrd x SW

For years Industry professionals have specified DSI® valve products for their most demanding projects, and consistently DSI® delivers the highest performance fluid control products available anywhere.

Note: All information is subject to change without notice.

7

DSI® Forged Steel Gate Valve

Cryogenic, API 602 • Bolted & Welded Bonnet

Parts & Materials

	No.		Description	Material		C
	1		Body	F316	16		17
	2		Seat Ring*	316 + HF
	3		Wedge*	316	13		18
	4		Stem*	316
	5		Gasket	316 + Graphite (SPW)	12		15
	6		Bonnet	F316	14		11
	7		Yoke	F316
	8		Stem Bushing	F316	Tack Weld		10
	9		Bonnet Bolt	B8
	10		Packing	Graphite	B
	11		Gland*	316	4
	12		Gland Flange	316	7		8
	13		Gland Nut	Gr. 8
	14		Gland Stud	B8	9		5
	15	Yoke Sleeve / Stem Nut		416	6		2
	16		Handwheel	Carbon Steel
	17	Handwheel Nut		Gr. 8	3
	18		Name Plate	Stainless Steel			D
	*Material may vary based on trim.					FLOW
					1
							Bleed
							Hole
	Dimensional Data, Weight and Figure Numbers					A
	Class 800, Reduced Port
	Valve			Dimensions (in.), Reduced Port			Weight
			A	B	C	D
	Size (in.)						(lbs.\
			End to End	Center to Top (open)	Handwheel Diameter	Port Diameter
		1/2	3.15	15.20	3.94	0.39	9.90
		3/4	3.54	15.61	3.94	0.55	11.22
		1	4.33	16.68	4.72	0.71	20.90
	11/2		5.00	19.25	6.69	1.16	25.96
		2	5.12	20.19	7.87	1.44	33.00
	Figure Numbers
		Bonnet	Class 800	Ends
			4121 D12-22*	Threaded
		Bolted	4111 D12-22*	Socketweld
			4101 D12-22*	Thrd x SW
			4123 D12-22	Threaded
		Welded	4113 D12-22	Socketweld
			4103 D12-22	Thrd x SW

* Figure number may vary by body & trim material.

Note: All information is subject to change without notice.

8

DSI® Forged Steel Gate Valve

API 602 • Extended Body • Bolted & Welded Bonnet

Parts & Materials

	No.	Description	Material		C
	1	Body	A105N	14	15
	2	Seat Ring*	410 + HF
	3	Wedge*	410	11	16
	4	Stem*	410
				10
	6	Bonnet	A105N		13
	8	Packing	Graphite	12
	9	Gland*	410	B	9
	10	Gland Flange	A105N	6
					8
	11	Gland Nut	2HM	4
	12	Gland Stud	B7M	1	3
	13	Yoke Sleeve / Stem Nut	416
	14	Handwheel	Carbon Steel
	15	Handwheel Nut	Carbon Steel		D
	16	Name Plate	Aluminum
	*Material may vary based on trim.				2
					E

A

Dimensional Data, Weight and Figure Numbers

Class 800, Reduced Port

Valve		Dimensions (in.), Reduced Port					Weight
	A	B	C		D	E
Size (in.)							(lbs.\
	End to End	Center to Top (open)	Handwheel Diameter		Port Diameter	Center to End
1/2	5.57	5.92	3.15		0.39	4.00	5.29
3/4	5.77	6.08	3.15		0.55	4.00	5.95
1	6.54	7.31	3.94		0.71	4.37	9.04
11/2	7.50	9.77	5.51		1.14	5.00	18.96
2	8.50	10.75	5.51		1.61	5.98	26.46

Figure Numbers

	Bonnet	Class 800	Class 1500	Ends
	Bolted	4151	6151	Male SW x FPT
		4141	6141	MPT x FPT
	Welded	4153	6153	Male SW x FPT
		4143	6143	MPT x FPT

Note: All information is subject to change without notice.

9

DSI® Forged Steel Gate Valve

API 602 • Integrally Reinforced Extended Body • Bolted & Welded Bonnet

Parts & Materials

	No.	Description	Material		C
	1	Body	A105N
	2	Seat Ring*	410 + HF	14	15
	3	Wedge*	410	11	16
	4	Stem*	410
				10
	6	Bonnet	A105N		13
	8	Packing	Graphite	12
	9	Gland*	410	B	9
	10	Gland Flange	A105N	6
					8
	11	Gland Nut	2HM	4
	12	Gland Stud	B7M	1	3
	13	Yoke Sleeve / Stem Nut	416
	14	Handwheel	Carbon Steel
	15	Handwheel Nut	Carbon Steel
	16	Name Plate	Aluminum
	*Material may vary based on trim.				D
				E	2
					A

Dimensional Data, Weight and Figure Numbers

Class 800, Reduced Port

Valve		Dimensions (in.), Reduced Port					Weight
	A	B	C		D	E
Size (in.)							(lbs.\
	End to End	Center to Top (open)	Handwheel Diameter		Port Diameter	Center to End
1/2	8.15	5.90	3.15		0.39	6.57	5.95
3/4	8.60	6.08	3.15		0.55	6.83	7.28
1	9.63	7.31	3.94		0.71	7.48	11.46
11/2	10.37	10.32	5.51		1.42	7.87	21.83
2	10.59	10.71	5.51		1.73	8.03	31.98

Class 1500, Reduced Port

Valve Size		Dimensions (in.), Reduced Port					Weight
	A	B	C		D	E
(in.)							(lbs.\
	End to End	Center to Top (open)	Handwheel Diameter		Port Diameter	Center to End
1/2	8.60	5.98	3.15		0.39	6.83	8.36
3/4	9.63	7.05	3.94		0.55	7.48	12.54
1	10.37	11.34	5.51		0.71	8.00	22.88
11/2	10.53	11.95	5.51		1.16	8.00	33.88
2	12.80	12.60	10.24		1.44	9.85	48.00

Figure Numbers

Bonnet	Class 800	Class 1500	Ends
Bolted	4191	6191	IREB X FPT
Welded	4193	6193	IREB X FPT

Note: All information is subject to change without notice.

10