Expanding Parallel Gate Valves With Nonrising Stem

Destination:

This type of valves is used in the oilfield industry for drilling and production operations for nominal pressures of 140, 210, 350 bar (2000, 3000, 5000 PSI).

The products are designed to perform according to the requirements of PR1 Performance Requirement Level and, on request, PSL1, PSL2 and PSL3 Product Specification Levels.

About Material class and Temperature classification, see Appendix A.

Working medium: water, oil products, gases, steam.

Technical and constructive characteristics
PN ( bar, PSI)	DN (in)	L (mm)	R	H (mm)	D (mm)	d (mm)	d2 (mm)	n x d1	Weight kos
140 (2000)	2 1/16	295	23	360	250	210	127	8 x d18	48
	2 9/16	333	26	430	250	190	149,2	8 x d22	79
	3 1/8	359	31	460	320	210	168	8 x d22	91
	4 1/16	435	37	480	360	275	215,9	8 x d28	138
210 (3000)	2 1/16	371	24	375	320	215	165	8 x d26	76
	2 9/16	422	27	420	320	245	190,5	8 x d30	105
	3 1/8	435	31	480	320	265	190,5	8 x d26	120
	4 1/16	511	37	630	450	295	235	8 x d35	190
350 (5000)	2 1/16	371	24	390	320	215	165	8 x d26	78
	2 9/16	422	27	425	320	245	190,5	8 x d30	108
	3 1/8	473	35	490	320	265	203	8 x d33	138,6
	4 1/16	549	39	530	500	310	241,3	8 x d36	202

Constructive characteristics of the main components:

Available to meet all appropriate API 6A requirements.
Valve type: full-bore
Body shape – straight
Closing element – parallel gate
Stem-non-rising, provided with trapezoidal thread, in contact with the circulation fluid
The bonnet is fasteneted to the body by threaded stud bolts.
The valve is connected to the pipe by flanges provided with sealing metallic rings, 6B type.
The valves permit the replacement of the stem packing box while the valve is under pressure.

Working and testing regime

Nominal pressure PSI	Working pressure PSI	Testing pressure PSI
	120oC	Strength	Tightness
2000	2000	4000	2000
3000	3000	6000	3000
5000	5000	10000	5000

Body-bonnet sealing: metal-to-metal
Body-gate sealing: metal+ PTFE/metal
Stem-bonnet sealing: rubber sheet or PTFE.

Main materials:

• Body and bonnet: alloy steel
• Parallel gate: forged alloy steel
• Stem: alloy steel
• Body-bonnet sealing: carbon steel
• Body-gate sealing: high alloy steel
• Stem-bonnet sealing: rubber or PTFE