Gate Valves – Enproengineers

STANDARD SPECIFICATIONS

Production Range

15 NB – 1000 NB

API 603/ASME 16.34		API 600/BS 1414
Class	Size	Class	Size
150	2” ~ 24”	150	2” ~ 40”
300	2” ~ 24”	300	2” ~ 36”
600	2” ~ 24”	600	2” ~ 24”
		900	2” ~ 12”
		1500	2” ~ 12”

Design Standards

Pressure – Temperature Rating	ANSI B16.34
Face to Face Dimensions	ANSI B16.10
End Flange Dimensions	ASME B16.5
Testing	API 598/ MSS-SP-41
Bonnet Bolt	ASTM A193/ASTM A320
Bonnet Nut	ASTM A194
Marking	MSS-SP-25
Light Wall Thickness	API 603/ANSI B16.34
Heavy Wall Thickness	API 600/BS 1414

Standard Material Specifications

Part Name	Cast Steel Valves		Stainless Steel Valves
Part Name	WCB	LCB	CF8M	CF8	CF3M
Body	A216-WCB	A352-LCB	A351-CF8M	A351-CF8	A351-CF3M
Wedge	A217-CA15	A351-CF8	A351-CF8M	A351-CF8	A351-CF3M
Seat Ring	A105+CA15	A182-F304	Integral
Stem	A479-410	A479-304	A479-316	A479-304	A479-316L
Back Seat Ring	A479-410	A479-304	Integral
Bonnet	A216-WCB	A352-LCB	A351-CF8M	A351-CF8	A351-CF3M
Bonnet Bolt	A193-B7	A320-L7	A193-B8
Bonnet Nut	A194-2H	A194-4	A194-8
Packing Gland	A479-410	A479-304	A479-316	A479-304	A479-316L
Hinge Pin	A576-1020		A479-304
Gland Packing	GRAPHITE
Gland Flange	A216-WCB		A351-CF8
Gland Bolt Nut	A307-B	A194-8	A194-8
Gasket	SPIRAL WOUND
Yoke Cap	A576-1020		A576-1020+Zn
Yoke Sleeve	A439-D2C		A439-D2C
Handwheel	A197		A193
Handwheel Nut	A47-32510+Zn		A351-CF8

Note : 1. We can supply any kind of Gasket and gland packing on request

DESIGN FEATURES

Body and Bonnet

The body is constructed with uniform sections and generous radius fillets to prevent stress on all sides. The body has a straight through port without recess except between the seats to achieve minimum turbulence, erosion and resistance to flow. The bolted bonnet is fitted with a back seat ring to guide the stem and provide a back seat when the valve is fully open. The yoke is cast integrated with the bonnet.

The body-bonnet joint for ASME Class 150 valves is oval in shape and plain faced. In ASME Class 300 and 600 valves, the bonnet joint is circular in shape and male-female type. Any kinds of gasket materials can be supplied according to customer’s requirement

Wedge

One piece flexible wedge ensures tight seating over a wide range of differential pressures and temperatures. Stress concentrations are minimized due to one piece flexible wedge of which the cross section of the wedge is a tapered H in shape. In addition, the flexible wedge adjusts the movement of body seat.

Seat Ring

Seal welded seat rings are designed to achieve minimum pressure drop and prevent damage by corrosion. Leakage through the path between the seat rings and body is also eliminated.

Stem

The stem has the ‘T’ head engaging with the T-slot in the wedge. Its surface is precisely machined and ground to reduce friction to extend stem packing life and ensure perfect tightness. The stem also has a back seat shoulder to match with the back seat ring in the bonnet.

Yoke

The yoke, when not integral with the bonnet, is exactly machined to match the bonnet and insure perfect with the backseat bushing and stem

Yoke Sleeve

The yoke sleeve has the long thread to ensure accurate alignment of the stem. The yoke sleeve is mounted on thrust bearings to facilitate easy operation for 14” or over in ASME class 150-300, and 6” or over in ASME class 600.

Stuffing Box

The Stuffing box is designed to extend the life of packing rings. Class 300 and above valves are equipped with a lantern ring between the packing rings.

End Connections

The standard flange ends have a raised face serrated finish type which conforms to ASME B16.5 RF. ASME class 600 valves are supplied with RTJ end flanges on request.

Operation

All valves are offered with hand wheel, gear operator, or actuators (electric, hydraulic, or pneumatic) according to customer’s requirements.

BOLTED BONNET GATE VALVES

BASIC CONFIGURATION

THREADED AND SOCKET WELD ENDS

WORKING PRESSURE RATING	SIZE		STANDARD DESIGN TYPE	A		B		C		H		WEIGHT		FIGURE
WORKING PRESSURE RATING	NPS	DN	STANDARD DESIGN TYPE	mm	in	mm	in	mm	in	mm	in	kg	lb	FIGURE
ASME 800	½”	15	SI	80	3.15	9.6	0.38	88	3.5	152	6.0	1.9	4.2	HL 103	STANDARD BORE
	¾”	20	SI	90	3.54	14	0.55	88	3.5	158	6.2	2.3	5.1	HL 104
	1”	25	SI	110	4.33	18	0.71	97	3.8	196	7.7	3.6	7.9	HL 105
	1-1/2”	40	SI	127	5.00	30	1.18	138	5.4	255	10.0	7.3	16.1	HL 107
	2”	50	SI	134	5.28	37.5	1.47	138	5.4	290	11.4	7.6	16.8	HL 108
	3”	80	SI	225	8.86	48	1.88	172	6.8	330	13.0	15	33.1	HL 1010
ASME 1500	½”	15	SI	90	3.54	9.6	0.38	88	3.5	152	6.0	2.4	5.3	9HL 103
	¾”	20	SI	110	4.33	14	0.55	97	3.8	190	7.5	3.9	8.6	9HL 104
	1”	25	SI	127	5.00	18	0.71	138	5.4	220	8.7	6.1	13.4	9HL 105
	1-1/2”	40	SI	127	5.00	30	1.18	138	5.4	282	11.1	10.8	23.8	9HL 107
	2”	50	SI	210	8.27	37.5	1.47	138	5.4	345	13.6	20.5	45.2	9HL 108
ASME 800	¼”	6	SI	80	3.15	8	0.31	88	3.5	152	6.0	2.1	4.6	H 101	FULL BORE
	3/8”	10	SI	80	3.15	9.6	0.38	88	3.5	152	6.0	2.1	4.6	H 102
	½”	15	SI	90	3.54	14	0.55	88	3.5	158	6.2	2.3	5.1	H 103
	¾”	20	SI	110	4.33	18	0.71	97	3.8	196	7.7	3.7	8.2	H 104
	1”	25	SI	127	5.00	24	0.94	138	5.4	225	8.9	5.9	13.0	H 105
	1-1/4”	32	SI	127	5.00	30	1.18	138	5.4	255	10.0	7.4	16.3	H 106
	1-1/2”	40	SI	134	5.28	37.5	1.47	138	5.4	290	11.4	8.3	18.3	H 107
	2”	50	SI	152	5.98	48	1.89	172	6.8	358	14.1	12.5	27.6	H 108
	3”	80	SI	203	7.99	70	2.76	234	9.2	460	18.1	37	81.6	H 1010
ASME 1500	¼”	6	SI	90	3.54	8	0.31	88	3.5	153	6.0	2.4	5.3	9H 101
	3/8”	10	SI	90	3.54	9.6	0.38	88	3.5	153	6.0	2.4	5.3	9H 102
	½”	15	SI	110	4.33	14	0.55	97	3.8	190	7.5	4.1	9.0	9H 103
	¾”	20	SI	127	5.00	18	0.71	138	5.4	220	8.7	6.2	13.7	9H 104
	1”	25	SI	127	5.00	24	0.94	138	5.4	250	9.8	8	17.6	9H 105
	1-1/4”	32	SI	127	5.00	30	1.18	138	5.4	282	11.1	10.5	23.1	9H 106
	1-1/2”	40	SI	127	5.00	37.5	1.47	138	5.4	290	11.4	11	24.3	9H 107
	2”	50	SI	210	8.27	50	1.96	172	6.8	345	13.6	20	44.1	9H 108
ASME 2500	½”	15	S2	150	5.91	11.5	0.45	138	5.4	282	11.1	10	22.0	25HR 103
	¾”	20	S2	150	5.91	15	0.59	138	5.4	287	11.3	10	22.0	25HR 104
	1”	25	S2	210	8.27	19.5	0.77	172	6.8	348	13.7	22	48.5	25HR 105
	1-1/2”	40	S2	230	9.06	28	1.10	234	9.2	406	16.0	37	81.6	25HR 107
	2”	50	S2	230	9.06	35	1.38	234	9.2	437	17.2	36	86	25HR 108

PRODUCT FEATURES:

Socket Weld acc to ASME B16.11.
Screwed ends (NPT) acc. To ASME B1.20.1
Butt welding ends acc. to ASME B16.25
End to End acc. to manufacturer standard.

BOLTED BONNET GATE VALVES

BASIC CONFIGURATION

ASME INTEGRAL FLANGED ENDS

WORKING PRESSURE RATING	SIZE		STANDARD DESIGN TYPE	A-RF		A-RJ		B		C		H			WEIGHT			FIGURE
WORKING PRESSURE RATING	NPS	DN	STANDARD DESIGN TYPE	mm	in	mm	in	mm	in	mm	in	mm	in	kg		lb
ASME 150	½”	15	SI	108	4.25	N.A	N.A	9.6	0.38	88	3.5	175	6.9	2.9		6.3	L1- 103
	¾”	20	SI	117	4.62	N.A	N.A	14	0.55	88	3.5	182	7.2	3.7		8.2	L1- 104
	1”	25	SI	127	5.00	140	5.50	18	0.71	97	3.8	212	8.3	5.2		11.5	L1- 105
	1-1/2”	40	SI	165	6.50	178	7.00	30	1.18	138	5.4	255	10.0	9.6		21.2	L1- 107
	2”	50	SI	178	7.00	191	7.50	37.5	1.47	138	5.4	290	11.4	13.2		29.1	L1- 108
ASME 300	½”	15	SI	140	5.50	151	5.94	9.6	0.38	88	3.5	175	6.9	3.6		7.9	L3- 103
	¾”	20	SI	152	6.00	165	6.50	14	0.55	88	3.5	182	7.2	5.2		11.5	L3- 104
	1”	25	SI	165	6.50	178	7.00	18	0.71	97	3.8	212	8.3	6.7		14.8	L3-105
	1-1/2”	40	SI	190	7.50	203	8.00	30	1.18	138	5.4	240	9.4	13		28.7	L3- 107
	2”	50	SI	216	8.50	232	9.12	37.5	1.47	138	5.4	290	11.4	15.3		33.7	L3- 108
ASME 600	½”	15	SI	165	6.50	163	6.44	9.6	0.38	88	3.5	159	6.3	4.3		9.5	L6- 103
	¾”	20	SI	190	7.50	190	7.50	14	0.55	88	3.5	185	7.3	7		15.4	L6- 104
	1”	25	SI	216	8.50	216	8.50	18	0.71	97	3.8	215	8.5	10		22.0	L6- 105
	1-1/2”	40	SI	241	9.50	241	9.50	30	1.18	138	5.4	255	10.0	18		39.7	L6- 107
	2”	50	SI	292	11.50	295	11.62	37.5	1.47	138	5.4	305	12.0	28		61.7	L6- 108
ASME 1500	½”	15	SI	216	8.50	216	8.50	9.5	0.37	88	3.5	185	7.3	7.5		16.5	15FL 103
	¾”	20	SI	229	9.00	229	9.00	14	0.55	97	3.8	215	8.5	12		26.5	15FL 104
	1”	25	SI	254	10.00	254	10.00	18	0.71	138	5.4	245	9.6	15		33.0	15FL 105
	1-1/2”	40	SI	305	12.00	305	12.00	30	1.18	172	6.8	295	11.6	28.2		62.2	15FL 107
	2”	50	SI	368	14.50	371.5	14.62	37.5	1.47	172	6.8	330	13.0	53		116.8	15FL 108
ASME 150	½”	15	SI	108	4.25	N.A	N.A	14	0.55	88	3.5	175	6.9	3.2		7.0	1- 103
	¾”	20	S1	117	4.62	N.A	N.A	18	0.71	97	3.8	210	8.3	4.7		10.4	1-104
	1”	25	S1	127	5.00	140	5.50	24	0.94	138	5.4	230	9.1	6.1		13.4	1- 105
	1-1/2”	40	S1	165	6.50	178	7.00	37.5	1.47	138	5.4	290	11.4	11.4		25.1	1- 107
	2”	50	S1	178	7.00	191	7.50	48	1.89	172	6.8	340	13.4	18		39.7	1- 108
ASME 300	½”	15	SI	140	5.50	151	5.94	14	0.55	88	3.5	175	6.9	3.8		8.4	3-103
	¾”	20	SI	152	6.00	165	6.50	18	0.71	97	3.8	210	8.3	5.6		12.3	3-104
	1”	25	SI	165	6.50	178	7.00	24	0.94	138	5.4	230	9.1	7.1		15.7	3-105
	1-1/2”	40	SI	190	7.50	203	8.00	37.5	1.47	138	5.4	290	11.4	13.5		29.8	3-107
	2”	50	SI	216	8.50	232	9.12	48	1.89	172	6.8	340	13.4	19		41.9	3-108
ASME 600	½”	15	SI	165	6.50	163	6.44	14	0.55	88	3.5	175	6.9	4.3		9.5	6-103
	¾”	20	SI	190	7.50	190	7.50	18	0.71	97	3.8	215	8.5	7		15.4	6-104
	1”	25	SI	216	8.50	216	8.50	24	0.94	138	5.4	240	9.4	10		22.0	6-105
	1-1/2”	40	SI	241	9.50	241	9.50	37.5	1.47	138	5.4	295	11.6	18		39.7	6-107
	2”	50	SI	292	11.50	295	11.62	48	1.89	172	6.8	360	14.2	28		61.7	6-108
ASME 1500	½”	15	SI	216	8.50	216	8.50	14	0.55	97	3.8	215	8.5	8.2		18.0	15F 103
	¾”	20	SI	229	9.00	229	9.00	18	0.71	138	5.4	250	9.8	13		28.7	15F 104
	1”	25	SI	254	10.00	254	10.00	24	0.94	138	5.4	270	10.6	16.2		35.7	15F 105
	1-1/2”	40	SI	305	12.00	305	12.00	37.5	1.47	172	6.8	350	13.8	29		64.0	15F 107
	2”	50	SI	368	14.50	371.5	14.62	48	1.89	234	9.2	445	17.5	55		121.3	15F 108
ASME 2500	½”	15	S2	264	10.38	264	10.38	11.5	0.45	138	5.4	282	11.1	16.2		35.7	25RF 103
	¾”	20	S2	273	10.75	273	10.75	15	0.59	138	5.4	290	11.4	17.6		38.8	25RF 104
	1”	25	S2	308	12.12	308	12.12	19.5	0.77	172	6.8	335	13.2	29		63.9	25RF 105
	1-1/2”	40	S2	384	15.12	387	15.24	28	1.10	234	9.2	406	16.0	60		132.3	25RF 107
	2”	50	S2	451	17.75	454	17.87	38	1.50	320	12.6	415	16.3	65		143.3	25RF 108

Flanged ends acc to ASME B16.5
Face to Face acc to ASME B16.10.

ASME CLASS 150

DIMENSIONS

Cast steel & Stainless Steel Gate Valve:

Bolted bonnet, Outside screw-and-yoke, Rising stem Non-rising handwheel, Flexible wedge.

Size				FACE TO FACE				API 600(RF ENDS)				API 603(RF ENDS)
Size		L1:RF		L2 : RTJ		L3:BW		H		D		H		D
mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
50	2	178	7	191	7-1/2	216	8-1/2	391	15-2/5	200	7-7/8	333	13-1/9	180	7
65	2-1/2	190	7-1/2	203	8	241	9-1/2	398	15-2/3	200	7-7/8	365	14-3/8	180	7
80	3	203	8	216	8-1/2	282	11-1/8	463	18-2/9	250	9-5/6	410	16-1/7	200	7-7/8
100	4	229	9	241	9-1/2	305	12	566	22-2/7	300	11-4/5	498	19-3/5	250	9-5/6
150	6	267	10-1/2	279	11	403	15-7/8	778	30-5/8	350	13-7/9	683	26-8/9	300	11-4/5
200	8	292	11-1/2	305	12	419	16-1/2	981	38-5/8	400	15-3/4	920	36-2/9	350	13-7/9
250	10	330	13	343	13-1/2	457	18	1182	46-1/2	450	17-5/7	1100	43-1/3	400	15-3/4
300	12	356	14	368	14-1/2	502	19-3/4	1387	54-3/5	500	19-2/3	1194	47	450	17-5/7
350	14	381	15	394	15-1/2	572	22-1/2	1499	59	500	19-2/3	1355	53-1/3	500	19-2/3
400	16	406	16	419	16-1/2	610	24	1692	66-3/5	560	22	1540	60-5/8	560	22
450	18	432	17	445	17-1/2	660	26	1878	74	560	22	1910	75-1/5	560	22
500	20	457	18	470	18-1/2	711	28	2110	83	630	24-4/5	2143	84-3/8	630	24-4/5
600	24	508	20	521	20-1/2	813	32	2485	97-5/6	630	24-4/5	2472	97-1/3	630	24-4/5

ASME CLASS 300

DIMENSIONS

Cast steel & Stainless Steel Gate Valve:

Bolted bonnet, Outside screw-and-yoke, Rising stem Non-rising handwheel, Flexible wedge.

Size				FACE TO FACE				API 600(RF ENDS)				API 603(RF ENDS)
Size		L1:RF		L2 : RTJ		L3:BW		H		D		H		D
mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
50	2	216	8-1/2	232	9-1/8	216	8-1/2	391	15-2/5	200	7-7/8	390	15-1/3	200	7-7/8
65	2-1/2	241	9-1/2	257	10-1/8	241	9-1/2	432	17	200	7-7/8	432	17	200	7-7/8
80	3	282	11-1/8	299	11-3/4	282	11-1/8	463	18-2/9	250	9-5/6	491	19-1/3	250	9-5/6
100	4	305	12	321	12-5/8	305	12	567	22-1/3	300	11-4/5	588	23-1/7	300	11-4/5
150	6	403	15-7/8	419	16-1/2	403	15-7/8	800	31-1/2	400	15-3/4	809	31-6/7	400	15-3/4
200	8	419	16-1/2	435	17-1/8	419	16-1/2	1015	40	450	17-5/7	1002	39-4/9	450	17-5/7
250	10	457	18	473	18-5/8	457	18	1191	46-8/9	450	17-5/7	1216	47-7/8	450	17-5/7
300	12	502	19-3/4	518	20-3/8	502	19-3/4	1433	56-3/7	500	19-2/3	1417	55-4/5	500	19-2/3
350	14	762	30	778	30-5/8	762	30	1638	64-1/2	560	22	1636	64-1/2	560	22
400	16	838	33	854	33-5/8	838	33	1758	69-1/5	560	22	1784	70-1/4	560	22
450	18	914	36	930	36-5/8	914	36	1963	77-2/7	630	24-4/5	1972	77-2/3	630	24-4/5
500	20	991	39	1010	39-3/4	991	39	2176	85-2/3	630	24-4/5	2200	86-3/5	630	24-4/5
600	24	1143	45	1165	45-7/8	1143	45	2528	99-1/2	800	31-1/2	2553	10-1/2	630	24-4/5

ASME CLASS 600

DIMENSIONS

Cast steel & Stainless Steel Gate Valve:

Bolted bonnet, Outside screw-and-yoke, Rising stem Non-rising handwheel, Flexible wedge.

Size				FACE TO FACE				API 600(RF ENDS)				API 603(RF ENDS)
Size		L1:RF		L2 : RTJ		L3:BW		H		D		H		D
mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
50	2	292	11-1/2	295	11-5/8	292	11-1/2	440	17-1/3	200	7-7/8	394	15-1/2	200	7-7/8
65	2-1/2	330	13	333	13-1/8	330	13	443	17-4/9	250	9-5/6	427	16-4/5	250	9-5/6
80	3	356	14	359	14-1/8	356	14	490	19-2/7	300	11-4/5	475	18-5/7	300	11-4/5
100	4	432	17	435	17-1/8	432	17	628	24-5/7	350	13-7/9	591	23-1/4	350	13-7/9
150	6	559	22	562	22-1/8	559	22	914	36	500	19-2/3	801	31-1/2	500	19-2/3
200	8	660	26	664	26-1/8	660	26	1072	42-1/5	500	19-2/3	1005	39-4/7	560	22
250	10	787	31	791	31-1/8	787	31	1266	46-5/6	560	22	1192	47	560	22
300	12	838	33	841	33-1/8	838	33	1490	58-2/3	630	24-4/5	1490	58-2/3	630	24-4/5
350	14	889	35	892	35-1/8	889	35	1606	63-2/9	630	24-4/5	1620	63-7/9	630	24-4/5
400	16	991	39	994	39-1/8	991	39	1810	71-1/4	800	31-1/2	1810	71-1/4	750	29-1/2
450	18	1092	43	1095	43-1/8	1092	43	1980	78	800	31-1/2	1980	78	750	29-1/2
500	20	1194	47	1200	47-1/4	1194	47	2120	83-1/2			2230	87-4/5
600	24	1397	55	1407	55-3/8	1397	55	2710	106-2/3			2710	106-2/3

ASME CLASS 900 & 1500

DIMENSIONS

Cast steel & Stainless Steel Gate Valve:

Bolted bonnet, Outside screw-and-yoke, Rising stem Non-rising handwheel, Flexible wedge.

Size				FACE TO FACE				API 600(RF ENDS)
Size		L1:RF		L2 : RTJ		L3:BW		H		D
mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
50	2	368	14-1/2	372	14-5/8	368	14-1/2	470	18-1/2	200	7-7/8
80	3	381	15	384	15-1/8	381	15	580	22-5/8	300	11-4/5
100	4	457	18	460	18-1/8	457	18	690	27-1/8	350	13-7/9
150	6	610	24	613	24-1/8	610	24	960	37-4/5	500	19-2/3
200	8	737	29	740	29-1/8	737	29	1300	51-1/6	500	19-2/3
250	10	838	33	841	33-1/8	838	33	1400	55-1/8
300	12	965	38	968	38-1/8	965	38	1620	63-7/9
CLASS 1500
50	2	368	14-1/2	372	14-5/8	368	14-1/2	561	22	300	11-4/5
80	3	470	18-1/2	473	18-5/8	470	18-1/2	662	26	400	15-3/4
100	4	546	21-1/2	549	21-5/8	546	21-1/2	754	29-2/3	450	17-5/7
150	6	705	27-3/4	711	28	705	27-3/4	1000	39-3/8	500	19-2/3
200	8	832	32-3/4	841	33-1/8	832	32-3/4	1450	57	630	24-4/5
250	10	991	39	1000	39-3/8	991	39
300	12	1130	44-1/2	1146	45-1/8	1130	44-1/2

STANDARD SPECIFICATIONS

Production Range

API 603/ASME 16.34		API 600/BS 1414
Class	Size	Class	Size
150	2” ~ 12”	150	2” ~ 24”
300	2” ~ 12”	300	2” ~ 16”
600	2” ~ 12”	600	2” ~ 12”
		900	2” ~ 12”
		1500	2” ~ 12”

Design Standards

Pressure – Temperature Rating	ANSI B16.34
Face to Face Dimensions	ANSI B16.10
End Flange Dimensions	ASME B16.5
Testing	API 598/ MSS-SP-41
Bonnet Bolt	ASTM A193/ASTM A320
Bonnet Nut	ASTM A194
Marking	MSS-SP-25
Light Wall Thickness	API 603/ANSI B16.34
Heavy Wall Thickness	API 600/BS 1873

Standard Material Specifications

Part Name	Cast Steel Valves		Stainless Steel Valves
Part Name	WCB	LCB	CF8M	CF8	CF3M
Body	A216-WCB	A352-LCB	A351-CF8M	A351-CF8	A351-CF3M
Disc	A217-CA15	A351-CF8	A351-CF8M	A351-CF8	A351-CF3M
Seat Ring	A105+CA15	A182-F304	Integral
Stem	A479-410	A479-304	A479-316	A479-304	A479-316L
Disc Lock Nut	A479-410	A479-304	A479-316	A479-304	A479-316L
Back Seat Ring	A479-410	A479-304	Integral
Bonnet	A216-WCB	A352-LCB	A351-CF8M	A351-CF8	A351-CF3M
Bonnet Bolt	A193-B7	A320-L7	A193-B8
Bonnet Nut	A194-2H	A194-4	A194-8
Packing Gland	A479-410	A479-304	A479-316	A479-304	A479-316L
Hinge Pin	A576-1020		A479-304
Gland Packing	GRAPHITE
Gland Flange	A216-WCB		A351-CF8
Gland Bolt Nut	A307-B	A194-8	A194-8
Yoke Bush	A439-D2C		A439-D2C
Handwheel	A197		A197
Handwheel Nut	A307-8		A194-8

Note :

We can supply any kind of Gasket and gland packing on request
Stelite-faced seat rings are available on request.

DESIGN FEATURES

Body and Bonnet

The body is cast construction with uniform sections and generous radius fillets to prevent stress on all sides. The body is spherical in shape to prevent minimum turbulence, erosion and resistance to flow. Bonnet flange and yoke are designed to have sufficient strength against stem thrust force. The bolted bonnet is fitted with a back seat ring. The body-bonnet joint is male-female type and circular in shape. Gasket materials can be supplied according to customer’s requirement.

Disc

The plug type disc is normally provided. This disc rotates freely on the stem and incorporates a differential angle from that on the seat ring. This design provides the maximum assurance of shut off and is less likely to stick in the body seat. The disc is retained to the stem by a disc lock nut. The guide bar on the upper side of the disc is guided through a bridge cast integral with the seat ring, assuring better arrangement and uniform seating at all times. Long guide hole in seat ring can always make centering of disc.

Seat Ring

The seat ring with a wide taper area provides ample seating. The slot on the seat ring allow easy removal for servicing at site. Three type designs are supplied: integral with body, threaded in body and seal welded on body. They are designed to eliminate resistance to flow. Seating area has proper structure to seal with disc.

Stem

The fine machined and ground finished stem is fitted to the disc by a disc lock nut. Rotating and rising designed stems are normally supplied but a non-rotating type is available as requested by the customer. The accuracy in the dimensions and finished assure a long life with a perfect tightness in the packing area. All stems have the turning and rising cut ACME threads.

Packing

The packing is designed and arranged to ensure a maximum seal along the stem during operation or while at position, thus allowing for a greater reduction in fugitive emissions.

Gland

The packing gland design is a two-piece self-aligning type. The gland is in contact with the packing which is connected to gland flange through a spherical joint. The gland has a shoulder to restrict the complete entry into the stuffing box. This particular design permits a correct pressure on the packing without any damage to stem due to friction or corrosion.

Stuffing Box

The stuffing box is designed to extend the life of packing rings. Class 300 and above valves are equipped with a lantern ring between the packing rings.

End Connections

The standard flange ends have a raised face serrated finish type which conforms to ASME B16.5 RF. ASME class 600 valves are supplied with RTJ end flanges on request.

Operation

All valves are offered with hand wheel, gear operator, or actuators (electric, hydraulic, or pneumatic) according to customer’s requirements.