API Cast Steel Bellows Gate Valve Features and benefits ● Long cycle life bellows (2000 cycles) in Gr. 321 (stainless), Inconel for special applications, (may be replaced with Monel trim to resist corrosion or Hastelloy C for chlorine service). ● Improved body-bonnet joint: Graphite reinforced with SS foil gasket for Class 150 valves. Fully-encased, spiral wound graphite-filled Gr. 316 (stainless) gasket for Classes 300-600. ● Bolted body-bonnet for fast serviceability. Hermetically-sealed bonnets available for Cl......

Application
Hot oil system, steam system, hot and cold water system etc.
Advantage
1.Bellow seal element. The key part of bellow sealed globe valves is metal bellow. It is the connection between cover and stem with automatic roll welding. The metal bellow can keep the stem part no leakage.
2.Benefit from the con and streamline shape design, the disc has a reliable seal and longer service life.
3.Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide a excellent seal.
4.Grease nipple. It can direct lubricate the stem, nut and sleeve.
5.Ergonomic hａnd wheel. It provide longer service life and easier operation.
Technical specification
Design standard: DIN 3356 API600 ANSI16.34 JIS GOST
Face to face dimension: ASME B 16.10
Flanged ends: ASME B 16.5
Test & inspection: API598

Performance Specifications
Nominal Pressure		150LB	300LB	600LB
	Shell Test	3.0MPa	7.5MPa	15.0MPa
Pressure	Seal Test	2.2MPa	5.5MPa	11.0MPa
Test	Back Seal Test	2.2MPa	5.5MPa	11.0MPa
	AIRROOF	0.6MPa	0.6MPa	0.6MPa
Suitable Temperature			(-)29-425℃
Suitable Medium			W.O.G

Size		2″	2-1/2″	3″	4″	5″	6″	8″
	150LB	178	190	203	229	254	267	292
L	300LB	216	241	283	305	381	403	419
	600LB	292	330	356	432	/	559	660
	150LB	152	178	190	229	254	279	343
A	300LB	165	191	210	254	279	318	381
	600LB	165	191	210	273	330	356	419
	150LB	120.5	139.5	152.5	190.5	215	241.5	298.5
B	300LB	127	149	168	200	235	270	330
	600LB	127	149	168	216	266.5	292	349
	150LB	92	105	127	157	186	216	270
C	300LB	92	105	127	157	186	216	270
	600LB	92	105	127	157	186	216	270
	150LB	16	17.5	19	24	25	26	29
b	300LB	22	25	29	32	35	37	41
	600LB	26	29	32	38	45	48	56
	150LB	1.6	1.6	1.6	1.6	1.6	1.6	1.6
f	300LB	1.6	1.6	1.6	1.6	1.6	1.6	1.6
	600LB	6.4	6.4	6.4	6.4	6.4	6.4	6.4
	150LB	4×19	4×19	4×19	8×19	8×22	8×22	8×22
N-φ	300LB	8×19	8×22	8×22	8×22	8×22	12×22	12×25
	600LB	8×19	8×22	8×22	8×25	8×30	12×29	12×32
	150LB	386	435	483	587	673	767	955
H	300LB	417	460	526	650	694	824	987
	600LB	427	473	538	657	/	872	1101
	150LB	200	200	250	250	300	300	350
W	300LB	200	250	250	250	300	350	450
	600LB	250	250	300	350	/	500	650

Wenzhou Luomai ValveTechnology Co.Ltd is located in Oubei Town, Wenzhou City, Zhejiang Province. It is a modern enterprise integrating R&D, manufacturing and sales. The company has strong technical force, advanced production technology, complete manufacturing equipment, sophisticated testing equipment and good management mechanism. It has multiple vertical machining centers and high-precision CNC machine tools to ensure the quality of each product. The company adheres to the principle of "quality first, integrity first", and provides customers with high-quality products and satisfactory services with sophisticated equipment, advanced technology, exquisite appearance and internal quality, and customer-oriented service awareness. Looking to the future. The company will continue to develop and lead the market in new products, seek diversified development paths, stabilize the domestic market, and actively develop international business. We sincerely hope to get the support and trust of our customers, and we are willing to cooperate wholeheartedly with you to create brilliance together.