Bolted Cover
We are manufacturer of Bolted Cover in India,Bolted Cover are actually heavy duty bolted coverage, inexhaustible hold band, internally entire body mounted disc set up. These valves are actually unidirectional valves and limit flow from reverse direction. These valves are most suitable for average velocity conditions.
Class – 150#
We’re Check Valve Bolted Cover Class 150 Manufaturers and Suppliers in India. The Hawa Engineers malleable iron even swing test valve is really made with limitless seat and circle. The swing check valve stops discharge by right away shutting when substance turns around bearing.A Class 150 check valve with a bolted cover is an automatic valve engineered to prevent backflow, capable of handling a maximum pressure of about 285 ps at ambient temperatures (approximately 100°F). Its pressure rating gradually decreases as the operating temperature rises. The bolted cover incorporates a gasket—typically a spiral-wound stainless-steel design with graphite filler—to create a reliable, leak-tight seal between the valve body and the cover. This construction is standard for cast or forged steel check valves, making them widely employed in industrial applications such as oil, gas, and petrochemical processes.
INVESTMENT CASTING NON RETURN VALVE CLASS 150 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | CF8 | CF8M | CF3 | CF3M |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO ASME B 16.5 RF |
| OPERATION | AUTOMATIC |
| HYD-TEST PRESSURE | BODY : 425 Psig (30 Kg/Cm ²) |
| SEAT : 300 Psig (21 Kg/Cm ²) | |
| SIZE RANGE | 25 MM TO 300 MM |
NON RETURN VALVE CLASS 125 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | IS 210 Gr FG 200 | 220 |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | GENERALLY CONFORMING TO BS 1868 |
| INSP & TEST STD | GENERALLY CONFORMING TO BS 6755 |
| ENDS | FLANGED TO ASME B 16.1 FF |
| OPERATION | AUTOMATIC |
| HYD-TEST PRESSURE | BODY : 225 Psig (16 Kg/Cm ²) |
| SEAT : 165 Psig (11.5 Kg/Cm ²) | |
| SIZE RANGE | 25 MM TO 700 MM |
CAST CARBON STEEL NON RETURN VALVE CLASS 150 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | WC1 | WC6 | WC9 | LCB |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO ASME B 16.5 RF |
| OPERATION | AUTOMATIC |
| HYD-TEST PRESSURE | BODY : 425 Psig (30 Kg/Cm ²) |
| SEAT : 300 Psig (21 Kg/Cm ²) | |
| SIZE RANGE | 25 MM TO 1200 MM |
Class – 300#
Marck Industrial Suppliers as well as Exporter of Swing Type Check Valves and Lift Type Check Valves. These NRV Non Return Valves are actually Bolted Cover Design, with Straight Type Body with Flanged ends and Screwed Ends.
A Class 300 check valve with a bolted cover is a pressure-rated valve engineered to prevent backflow, adhering to standards such as API 600 or BS 1868. Its primary features include a Class 300 pressure rating, typically around 740 psi at \(100\degree F\) for steel, though specific test pressures depend on the material and manufacturer. The valve incorporates a bolted cover for ease of assembly and features connection flanges designed in compliance with ASME B16.5. These valves are available in various materials, including cast steel (WCB) and forged steel, and can be found in different configurations, such as swing or piston lift types.
INVESTMENT CASTING NON RETURN VALVE CLASS 300 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | CF8 | CF8M | CF3 | CF3M |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO ASME B 16.5 RF |
| OPERATION | AUTOMATIC |
| HYD-TEST PRESSURE | BODY : 1100 Psig (77 Kg/Cm ²) |
| SEAT : 800 Psig (56 Kg/Cm ²) | |
| SIZE RANGE | 25 MM TO 300 MM |
NON RETURN VALVE CLASS 300 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | WC1 | WC6 | WC9 | LCB |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO ASME B 16.5 RF |
| HYD-TEST PRESSURE | BODY : 1100 Psig (77 Kg/Cm ²) |
| SEAT : 800 Psig (56 Kg/Cm ²) | |
| SIZE RANGE | 25 MM TO 1000 MM |
Class – 600#
We’re Check Valve Class 600 Manufacturers & Suppliers in India A swing test valve or perhaps tilting disc check valve is actually confirm valve in that the disc, the movable portion to obstruct the flow, swings on a hinge or perhaps trunnion, both onto the hold to obstruct reverse flow or perhaps off the seat to enable ahead flow .
We specialize in manufacturing, supplying, and exporting Swing Type Check Valves and Lift Type Check Valves. These Non-Return Valves (NRVs) feature a bolted cover design and a straight-type body, available with flanged ends or screwed ends. Swing Check Valves are designed to suit horizontal or vertical flow setups, particularly for fluid flowing upward in pipeline layouts.
NON RETURN VALVE CLASS 600 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | WC1 | WC6 | WC9 | LCB |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO ASME B 16.5 RF |
| HYD-TEST PRESSURE | BODY : 2175 Psig (153 Kg/Cm ²) |
| SEAT : 1600 Psig (112 Kg/Cm ²) | |
| SIZE RANGE | 25 MM TO 750 MM |
Class – 900#
We are #1 Check Valve Bolted Cover Class – 900# Manufacturer and Suppliers in India.A bolted bonnet Class 900 globe valve is a robust valve designed for controlling and regulating flow in high-pressure industrial systems. The term bolted bonnet refers to the method of connecting the valve’s body to its bonnet, ensuring a secure seal, while Class 900 indicates its ASME pressure rating, suitable for high-pressure operations.
NON RETURN VALVE CLASS 900 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | WC1 | WC6 | WC9 | LCB |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO ASME B 16.5 RF |
| HYD-TEST PRESSURE | 3250 Psig (228 Kg / Cm ² ) |
| 2400 Psig (168 Kg/Cm ²) | |
| SIZE RANGE | 40 MM TO 600 MM |
Class – 1500#
We are the #1 Check Valve Bolted Cover Class – 1500# Manufacturer and Supplier in India.A Class-1500 bolted cover check valve is a high-pressure valve designed to allow fluid flow in only one direction, with a bolted cover sealing the bonnet to the body. Key information includes a high working pressure rating (e.g., 384 Bar / 5575 Psig body, 281 Bar / 4080 Psig seat), with pressure-retaining components made of materials like ASTM A105 (for forged) or ASTM A216 Gr. WCB (for cast).
NON RETURN VALVE CLASS 1500 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | WC1 | WC6 | WC9 | LCB |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO ASME B 16.5 RF |
| HYD-TEST PRESSURE | BODY : 5575 Psig (392 Kg / Cm ²) |
| SEAT : 4080 Psig (287 Kg/Cm ²) | |
| SIZE RANGE | 50 MM TO 600 MM |
Class – 2500#
We are #1 Check Valve Bolted Cover Class – 2500# Manufacturer and Suppliers in India.
A Class 2500# bolted cover check valve is a robust high-pressure valve engineered to permit flow in a single direction, withstanding a pressure rating of up to 2500 pounds per square inch. The term “bolted cover” indicates that the bonnet, or cover, is fastened securely to the valve body using bolts, a typical design for handling high-pressure conditions. These valves are manufactured following industry standards such as API 6D or ASME B16.5. Constructed from durable materials like carbon steel or stainless steel alloys, they are equipped with high-pressure-rated connection options including butt weld, socket weld, or flanged ends, ensuring reliable performance under demanding conditions.
NON RETURN VALVE CLASS 2500 SWING TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | WC1 | WC6 | WC9 | LCB |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO ASME B 16.5 RF |
| HYD-TEST PRESSURE | BODY : 5575 Psig (392 Kg / Cm ²) |
| SEAT : 4080 Psig (287 Kg/Cm ²) | |
| SIZE RANGE | 50 MM TO 600 MM |
DIN Standard
DIN Standard vents are actually designed as well as made in India to PN 40, PN 10/ PN sixteen. Typically, DIN globe valves are manufactured from cast steel with exterior screw & yoke and soaring stem. Long-cycle living below seal style is actually available upon demand that prominently gets better the closing performance at stem also as guarantees a very long service life.
NON RETURN VALVE PN 10 /PN 16 RATING PISTON LIFT TYPE BOLTED COVER
Product Description
| BODY | COVER | IS 210 Gr FG 200 | 220 |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | GENERALLY CONFORMING TO BS 1868 |
| INSP & TEST STD | GENERALLY CONFORMING TO BS 6755 |
| ENDS | FLANGED TO DIN 2532 FOR PN 10 |
| FLANGED TO DIN 2533 FOR PN 16 | |
| OPERATION | AUTOMATIC |
| HYD-TEST PRESSURE | BODY : 213 Psig (15 Kg/Cm ²) |
| SEAT : 142 Psig (10 Kg/Cm ²) | |
| SIZE RANGE | 15 MM TO 250 MM |
CHECK VALVE PN 40 RATING PISTON LIFT TYPE BOLTED COVER
Product Description
| BODY | COVER | ASTM A 216 Gr WCB | WC1 | WC6 | WC9 | LCB |
| TRIMS | 13 Cr | 18 Cr 8 Ni |
| MFG STD | BS 1868 | DIN 3356 |
| INSP & TEST STD | BS 6755 |
| ENDS | FLANGED TO DIN 2545 |
| OPERATION | AUTOMATIC |
| HYD-TEST PRESSURE | BODY : 854 Psig (60 Kg/Cm ²) |
| SEAT : 569 Psig (40 Kg/Cm ²) | |
| SIZE RANGE | 15 MM TO 300 MM |
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