HHF-1300/1600 Discharge Filter Screen and Assistant Pipe Parts

1

11-3161-2401-00

Filter screen assembly (2 pcs total, 1 pc per configuration)

Stainless steel (316L) mesh with carbon steel frame, corrosion-resistant and rated for high-pressure (up to 60MPa) fluid flow

1. Clogging from excessive debris in mud; 2. Mesh wear/tearing from hard particles; 3. Corrosion from chemical mud additives.

1. Clean weekly or when pressure drop exceeds 0.5MPa; 2. Replace mesh if tears are detected; 3. Use compatible corrosion-inhibiting mud additives.

1

11-3161-2402

Discharge Elbow (1 pc)

Alloy steel (4140) with heat treatment, precision-machined to minimize flow resistance and withstand high pressure

1. Erosion at elbow inner surfaces from high-velocity mud; 2. Fatigue cracking from pressure surges; 3. Corrosion from mud chemicals.

1. Inspect for erosion annually via ultrasonic testing; 2. Install flow diffusers to reduce velocity; 3. Reapply anti-corrosive coating quarterly.

2

11-3161-2203-00, 11-3161-2203-1

Discharging cross / Discharge cross (2 pcs total, 1 pc per configuration)

Alloy steel (4140) with heat treatment, designed for multi-directional fluid distribution in high-pressure systems

1. Uneven pressure distribution leading to cracking; 2. Erosion at flow junctions; 3. Corrosion from external exposure.

1. Torque connections evenly to maintain pressure balance; 2. Clean flow junctions during routine maintenance; 3. Protect from external impact with guards.

3

11-3161-2202-00

Pipe, relief valve (1 pc)

Stainless steel (304) with seamless construction, rated for high-pressure relief flow and corrosion resistance

1. Clogging from debris; 2. Corrosion from moisture and mud; 3. Fatigue from repeated relief valve activation.

1. Flush monthly to remove debris; 2. Use anti-corrosive lubricants; 3. Inspect for cracks after relief valve activation.

1

11-3161-25, 11-3161-32-1

Flange (5 1/8*35), Blind Flange (5 1/8*35) (2 pcs total, 1 pc each)

Carbon steel (A105) with galvanized finish, designed for high-pressure flange connections per ASME B16.5

1. Bolt hole wear from repeated assembly; 2. Corrosion from outdoor exposure; 3. Leakage from gasket misalignment.

1. Torque bolts to ASME B18.2.1 specs; 2. Replace gaskets with each disassembly; 3. Apply anti-corrosive spray to flange surfaces.

2

B34521-165-700-69

O ring, 165*7.0G (2 pcs total, 1 pc per configuration)

Fluorocarbon rubber (FKM), chemical-resistant and suited for high-pressure (up to 60MPa) sealing

1. Compression set from prolonged pressure; 2. Degradation from chemical mud; 3. Cracking from thermal cycling.

1. Replace after each disassembly; 2. Use compatible mud additives; 3. Avoid sudden temperature changes above 150°C.

3

11-3161-23, 11-3161-2206, 11-3161-2204-1

Gasket (R44: 3 pcs; R27: 2 pcs; R35: 2 pcs)

PTFE (Teflon) with glass fiber reinforcement, high-pressure, chemical-resistant sealing for flanges and fittings

1. Creep deformation from pressure; 2. Damage from sharp mating surfaces; 3. Degradation from high temperatures.

1. Inspect mating surfaces for sharp edges; 2. Avoid over-torquing; 3. Match gasket type to component (R44/R27/R35) for proper fit.

4

11-3161-0546, 11-3161-2502

Sealant (15ml, 2 pcs total, 1 pc per configuration)

High-temperature, chemical-resistant silicone sealant, formulated for high-pressure drilling system sealing

1. Degradation from high temperatures; 2. Loss of adhesion from contaminated surfaces; 3. Cracking from thermal cycling.

1. Apply to clean, dry surfaces; 2. Allow 24-hour curing before startup; 3. Avoid exposure to temperatures above 200°C.

1

11-3161-1510, 11-3161-2501

Pressure gauge (0～60MPa/0～8700PSi; Union type, 0～6000PSi) (2 pcs total, 1 pc per configuration)

Stainless steel (316) case with brass internal components, shock-resistant and rated for high-pressure drilling applications

1. Gauge damage from pressure spikes; 2. Internal component corrosion; 3. Lens fogging from moisture ingress.

1. Install a pressure snubber to reduce spikes; 2. Calibrate annually per ASME B40.100; 3. Seal gauge connections to prevent moisture.

2

11-3161-2201-00, 11-3161-2202-1

Seat, pressure gauge (2 pcs total, 1 pc per configuration)

Brass with PTFE sealing surface, designed to create a leak-proof seal between gauge and system

1. Wear from repeated gauge removal; 2. Corrosion from mud and moisture; 3. Seal degradation from high temperatures.

1. Replace seat when removing gauge; 2. Apply anti-corrosive thread sealant; 3. Avoid over-tightening to prevent seat damage.

3

11-3161-2201-03

Bushing (1 pc)

Brass with precision threading, designed to adapt gauge connections and maintain alignment

1. Thread wear from repeated assembly; 2. Corrosion from moisture; 3. Bending from improper installation.

1. Use a wrench on the bushing flats, not threads; 2. Apply thread sealant to prevent corrosion; 3. Ensure proper alignment before tightening.

1

11-3161-2403, 11-3161-2204, 11-3161-2205-1

Stud Bolt (1 1/2-8UN-2A*128: 32 pcs; 1 1/16-8UN-2A*170: 16 pcs; 1 1/8-8UN-2A*90: 16 pcs)

Alloy steel (Grade 10.9) with cadmium plating, high-strength for high-vibration, high-pressure applications

1. Fatigue failure from vibration; 2. Thread wear from repeated installation; 3. Plating damage leading to corrosion.

1. Torque to specs (120-250 ft-lbs based on size); 2. Use thread lubricant; 3. Replace if plating or threads are damaged.

2

11-3161-2404, 11-3161-2205, 11-3161-2206-1

Nut (1 1/2-8UN-2B: 16 pcs; 1 1/16-8UN-2B: 32 pcs; 1 1/8-8UN-2B: 16 pcs) (SPL)

Alloy steel (Grade 10) with nylon insert, self-locking for vibration resistance in high-pressure systems

1. Loss of locking capability from over-torquing; 2. Thread wear from vibration; 3. Corrosion from moisture.

1. Replace nuts if nylon insert fails; 2. Torque to match studs; 3. Apply anti-corrosive sealant to threads.

1

11-3161-2800

Relieve valve JA-3 (1 pc)

Stainless steel (316) valve body with brass internal components, rated for 0-60MPa relief pressure

1. Valve sticking from debris buildup; 2. Seat wear from repeated activation; 3. Spring fatigue from pressure cycling.

1. Test monthly for proper activation; 2. Flush to remove debris; 3. Replace internal springs every 2,000 operating hours.

2

11-3161-2700

KB-75 damper (2 pcs total, 1 pc per configuration)

Steel housing with rubber diaphragm, designed to reduce pressure surges in discharge lines

1. Diaphragm degradation from chemical mud; 2. Housing corrosion; 3. Rupture from excessive pressure spikes.

1. Replace diaphragm annually; 2. Use compatible mud chemicals; 3. Install upstream of relief valve for added protection.

How often should pressure gauges and relief valves be calibrated/tested for HHF-1300/1600 systems?

Calibrate pressure gauges annually per ASME B40.100 to ensure accuracy. Test relief valves (JA-3) monthly for proper activation, and replace internal components every 2,000 operating hours to comply with API 610 overpressure protection standards.

What’s the correct torque for 1 1/2-8UN stud bolts (11-3161-2403) in the discharge system?

Follow ASME B18.2.1 specs: torque 1 1/2-8UN stud bolts to 220 ft-lbs. Use thread lubricant to reduce friction, and torque in a star pattern to ensure even clamping force, preventing flange warping and leaks.

How to prevent filter screen clogging and extend its service life?

Clean the filter screen weekly or when pressure drop exceeds 0.5MPa; install a pre-filter in the suction line to reduce debris load. Use corrosion-inhibiting mud additives to prevent mesh corrosion, and replace the screen immediately if tears are detected to protect downstream components.