Bypass valve:bypass gate valve and globe valves. body: cast steel and stainless steel,Size: 2"- 24",Pressure Rating: 150 - 900lb

BY-PASS TYPE GATE VALVE

 Gasket of Cover Flange:Carbon steel or stainless+flexible graphite combined gasket is used for Class 150 gate valve,Stainless steel+flexible graphite wounded gasket is used for Class 300 gate valve,Stainless steel+flxible graphite wounded gasket is used for Class 600 gate valve,and ring joint gasket is also optional for Class 600 gate valve,Ring Joint gasket is used for Class 900 gate valve,Pressurized seal design is used for Class 1500-Class 2500 gate valve.

Packing Seal:Molded flexible graphite is used for packing material.PTFE or combined packing material can be also used if being requested by the customer. The internal surface of the stuffing box,of which area is contacted with the packing,is of excellent finish(Ra 3.2mm).The stem surface,contacting with the packing,should be rolled and pressed after being precisely machined,so as to reach to the high finish and compactness(Ra 0.8mm)and ensure the reliable tightness of the stem area.

Belleville Spring Loaded Packing Impacting System 

If being requested by the customer,the Belleville spring loaded packing impacking system can be adopted for enhancing the durability and reliablility of the packing seal.

Actuation  Handwheel or gear box is usually used for gate valve actuation,Chain wheel and electric actuator can be also used for gate  valve actuation if being requested by the customers.

Back Seating Design    All our gate valves have the back seating design.In most cases,the carbon steel gate valves is fitted with a renewable back seat.For stainless steel gate valve,the back seat is machined directly in the bonnet or is machined after welding.When the gate valve is at fully open position,the sealing of the back seat can be very reliable.However,as per the requirement of API 600,it is not advisable to add or change packing by the mean of back seating when the valve is pressure containing

Special Gate valve    Besides the commom gate valves,our company's also makes cryogenic gate valve,Jacketed Gate Valve,Bellow Sealed Gate valve, Extension Stem Gate Valve for underground application,etc.

Parts and Material List

No.	Part Name	Material
		WCB/Trim 1	WCB/Trim 5	WCB/Trim 8	CF8/304	CF8M/316
1	Body	ASTM A216 WCB	ASTM A216 WCB	ASTM A216 WCB	ASTM A351 CF8	ASTM A351 CF8M
2	Gasket	Soft lron + Graphite or 304 + Graphite			304 + Graphite	316 + Graphite
3	Seat Ring	A105+13Cr	A105+STL	A105+STL	ASTM A351 CF8	ASTM A351 CF8M
4	Gate	ASTM A216 WCB+13Cr	ASTM A216 WCB+STL	ASTM A216 WCB+13Cr	ASTM A351 CF8	ASTM A351 CF8M
5	Stem	ASTM A182 F6a	ASTM A182 F6a	ASTM A182 F6a	ASTM A182 F304	ASTM A182 F316
6	Backseat bushing	ASTM A182 F6a	ASTM A182 F6a	ASTM A182 F6a	ASTM A351 CF8	ASTM A351 CF8M
7	Packing	Graphite	Graphite	Graphite	Graphite	Graphite
8	Gland	ASTM A182 F6a	ASTM A182 F6a	ASTM A182 F6a	ASTM A182 F304	ASTM A182 F316
9	Gland eyebolt	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B8	ASTM A193 B8M
10	Eyebolt nut	ASTM A194 2H	ASTM A194 2H	ASTM A194 2H	ASTM A194 8	ASTM A194 8M
11	Eyebolt pin	ASTM A36	ASTM A36	ASTM A36	304ss	304ss
12	Gland flange	ASTM 216 WCB	ASTM 216 WCB	ASTM 216 WCB	ASTM A351 CF8	ASTM A351 CF8M
13	Bonnet bolt	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B8	ASTM A193 B8M
14	Bonnet nut	ASTM A194 2H	ASTM A194 2H	ASTM A194 2H	ASTM A194 8	ASTM A194 8M
15	Bonnet	ASTM A216 WCB	ASTM A216 WCB	ASTM A216 WCB	ASTM A351 CF8	ASTM A351 CF8M
16	Nipple	Carbon steel	Carbon steel	Carbon steel	Carbon steel	Carbon steel
17	Stem nut	ASTM A439 D2	ASTM A439 D2	ASTM A439 D2	ASTM A439 D2	ASTM A439 D2
18	Yoke sleeve nut	Carbon steel	Carbon steel	Carbon steel	Carbon steel	Carbon steel
19	Hand wheel	Ductile lron	Ductile lron	Ductile lron	Ductile lron	Ductile lron
20	Hand wheel nut	Carbon steel	Carbon steel	Carbon steel	Carbon steel	Carbon steel
21	Set screw	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7
Note:1.The chart above only lists out some common composition of valve parts,We may provide other different parts material composition according to the customer's request or the actual valve working condition.                           2.Drive actuator:Handwheel,Electric actuator,Conical gear catuator,according to client's demand.

  Main connection Dimension

Class	Size		Dimensions
	NPS	DN	L		B	D	G	f	K	Z-Φd	C	A	Q
			RF	BW
150Lb	2	50	178	216	49	152	91.9	1.6	120.7	4-19.1	15.8	63	As per client's requirement
	21/2	65	191	241	62	178	104.6	1.6	139.7	4-19.1	17.5	75
	3	80	203	283	74	191	127	1.6	152.4	4-19.1	19.1	91
	4	100	229	305	100	229	157.2	1.6	190.5	8-19.1	23.9	117
	6	150	267	403	150	279	215.9	1.6	241.3	8-22.2	25.4	172
	8	200	292	419	201	343	269.7	1.6	298.5	8-22.2	28.4	223
	10	250	330	457	252	406	323.9	1.6	362	12-25.4	30.2	278
	12	300	356	502	303	483	381	1.6	431.8	12-25.4	31.8	329
	14	350	381	572	334	533	412.8	1.6	476.2	12-28.6	35.1	362
	16	400	406	610	385	597	469.9	1.6	539.8	16-28.6	36.6	413
	18	450	432	660	436	635	533.4	1.6	577.9	16-31.8	39.6	464
	20	500	457	711	487	699	584.2	1.6	635	20-31.8	42.9	516
	24	600	508	813	589	813	692.2	1.6	749.3	20-34.9	47.8	619
	26	650	559	864	633	870	749.3	1.6	806.5	24-34.9	68.3	670
	28	700	610	914	684	927	800.1	1.6	863.5	28-34.9	71.4	721
	30	750	610/660	914	735	984	857.3	1.6	914.4	28-34.9	74.7	772
	32	800	711	965	779	1060	914.4	1.6	977.9	28-41.3	80.8	825
	34	850	762	1016	830	1111	965.2	1.6	1028.7	32-41.3	82.6	876
	36	900	711/813	1016	874	1168	1022.4	1.6	1085.9	32-41.3	90.4	927
	40	1000	711/813	1016	874	1168	1022.4	1.6	1085.9	32-41.3	90.4	927

Class	Size		Dimensions
	NPS	DN	L			B	D	G	f	K	Z-Φd	C	RTJ				A	Q
			RF	RTJ	BW								Y	P	E	F
300Lb	2	50	216	232	216	49	165	91.9	1.6	127	8-19.1	22.4	108	82.55	7.92	11.91	63	As per client's requirement
	21/2	65	241	257	241	62	191	104.6	1.6	149.2	8-22.2	25.4	127	101.6	7.92	11.91	75
	3	80	283	298	283	74	210	127	1.6	168.3	8-22.2	28.4	146	123.82	7.92	11.91	91
	4	100	305	321	305	100	254	157.2	1.6	200.2	8-22.2	31.8	175	149.22	7.92	11.91	117
	6	150	403	419	403	150	318	215.9	1.6	269.8	12-22.2	36.6	241	211.12	7.92	11.91	172
	8	200	419	435	419	201	381	269.7	1.6	330.2	12-25.4	41.1	302	269.88	7.92	11.91	223
	10	250	457	473	457	252	445	323.9	1.6	387.4	16-28.6	47.8	356	323.85	7.92	11.91	278
	12	300	502	518	502	303	521	381	1.6	450.9	16-31.8	50.8	413	381	7.92	11.91	329
	14	350	762	778	762	334	584	412.8	1.6	514.4	20-31.8	53.8	457	419.1	7.92	11.91	362
	16	400	838	854	838	385	648	469.9	1.6	571.5	20-34.9	57.2	508	469.9	7.92	11.91	413
	18	450	914	930	914	436	711	533.4	1.6	628.7	24-34.9	60.5	575	533.4	7.92	11.91	464
	20	500	991	1010	991	487	775	584.2	1.6	685.8	24-34.9	63.5	635	584.2	9.52	13.49	516
	24	600	1143	1165	1143	589	914	692.2	1.6	812.8	24-41.3	69.9	749	692.15	11.13	16.66	619
	26	650	1245	1270	1245	633	972	749.3	1.6	876.3	28-44.5	79.2	809.8	749.3	12.7	19.84	670
	28	700	1346	1372	1346	684	1035	800.1	1.6	939.8	28-44.5	85.9	860.6	800.1	12.7	19.84	721
	30	750	1397	1422	1397	735	1092	857.3	1.6	997	28-47.6	91.9	917.4	857.25	12.7	19.84	772
	32	800	1524	1553	1524	779	1149	914.4	1.6	1054.1	28-50.8	98.6	984.3	914.4	14.27	23.01	825
	34	850	1626	1654	1626	830	1207	965.2	1.6	1104.9	28-50.8	101.6	1035.1	965.2	14.27	23.01	876
	36	900	1727	1756	1727	874	1270	1022.4	1.6	1168.4	32-54	104.6	1092.2	1022.35	14.27	23.01	927

Bypass gate valve