diff --git a/pipeline/mesh_config.py b/pipeline/mesh_config.py
index 04dea14..b69d9dc 100644
--- a/pipeline/mesh_config.py
+++ b/pipeline/mesh_config.py
@@ -20,19 +20,14 @@
 """
 
 import dataclasses
-import enum
 from typing import Any
 
 from connectomics.common import utils
+from connectomics.volume import subvolume_processor
 import dataclasses_json
-from sofima import mesh as mesh_lib
 from sofima.processor import maps
 from sofima.processor import mesh
-
-
-# TODO(blakely): Combine with flow_config.DefaultPipeline
-class DefaultPipeline(enum.Enum):
-  EM_2D = 'em_2d'
+from sofima.processor.defaults import em_2d
 
 
 @dataclasses.dataclass(frozen=True)
@@ -45,127 +40,26 @@ class MeshRelaxationConfig(dataclasses_json.DataClassJsonMixin):
   reconcile_cross_block_config: maps.ReconcileCrossBlockMaps.Config
 
 
-def default_em_2d_relax_mesh_config(
-    overrides: dict[str, Any] | None = None,
-) -> mesh.RelaxMesh.Config:
-  """Default mesh relaxation configuration for EM 2D data."""
-
-  config = mesh.RelaxMesh.Config(
-      output_dir='NONE',
-      integration_config=mesh_lib.IntegrationConfig(
-          dt=0.001,
-          gamma=0.0,
-          k0=0.01,
-          k=0.1,
-          stride=(40, 40),
-          num_iters=1000,
-          max_iters=100000,
-          stop_v_max=0.005,
-          dt_max=1000,
-          start_cap=0.01,
-          final_cap=10,
-          prefer_orig_order=True,
-      ),
-      mesh=None,
-      flows=[],
-      sections_to_skip=[],
-      ranges_to_skip=[],
-      mask=None,
-      block_starts=[],
-      block_ends=[],
-      backward=False,
-      mesh_min_frac=0.5,
-      mesh_max_frac=2.0,
-      coming_in=[],
-      options=mesh.MeshOptions(
-          irregular_mask_radius=5,
-      ),
-  )
-  if overrides is not None:
-    config = utils.update_dataclass(config, overrides)
-  return config
-
-
-def default_em_2d_within_block_config(
-    overrides: dict[str, Any] | None = None,
-) -> mesh.RelaxMesh.Config:
-  """Default configuration for within-block mesh relaxation."""
-  config = default_em_2d_relax_mesh_config()
-  if overrides is not None:
-    config = utils.update_dataclass(config, overrides)
-  return config
-
-
-def default_em_2d_last_section_config(
-    overrides: dict[str, Any] | None = None,
-) -> mesh.RelaxMesh.Config:
-  """Default configuration for relaxation of last section of blockwise mesh."""
-  config = default_em_2d_relax_mesh_config()
-  if overrides is not None:
-    config = utils.update_dataclass(config, overrides)
-  return config
-
-
-def default_em_2d_cross_block_config(
-    overrides: dict[str, Any] | None = None,
-) -> mesh.RelaxMesh.Config:
-  """Default cross-block mesh relaxation configuration for EM 2D data."""
-  config = default_em_2d_relax_mesh_config({
-      'integration_config': {
-          'k0': 0.001,
-          'stride': (320, 320),
-          'stop_v_max': 0.001,
-      },
-      'options': {
-          'init_state': mesh.MeshInitState.PREV_MEDIAN,
-      },
-  })
-  if overrides is not None:
-    config = utils.update_dataclass(config, overrides)
-  return config
-
-
-def default_em_2d_reconcile_config(
-    overrides: dict[str, Any] | None = None,
-) -> maps.ReconcileCrossBlockMaps.Config:
-  """Default cross-block reconciliation configuration for EM 2D data."""
-  config = maps.ReconcileCrossBlockMaps.Config(
-      cross_block='NONE',
-      cross_block_inv='NONE',
-      last_inv='NONE',
-      main_inv='NONE',
-      z_map={},
-      stride=40,
-      xy_overlap=128,
-      backward=False,
-  )
-  if overrides is not None:
-    config = utils.update_dataclass(config, overrides)
-  return config
-
-
 def default_em_2d(
     overrides: dict[str, Any] | None = None,
 ) -> MeshRelaxationConfig:
   """Default mesh relaxation configuration for EM 2D data."""
+  within_block = em_2d.within_block_config()
+  last_section = em_2d.last_section_config()
+  cross_block = em_2d.cross_block_config()
+  reconcile_cross_block = em_2d.default_em_2d_reconcile_config()
   config = MeshRelaxationConfig(
-      within_block_config=default_em_2d_within_block_config(),
-      last_section_config=default_em_2d_last_section_config(),
-      cross_block_config=default_em_2d_cross_block_config(),
-      reconcile_cross_block_config=default_em_2d_reconcile_config(),
+      within_block_config=within_block,
+      last_section_config=last_section,
+      cross_block_config=cross_block,
+      reconcile_cross_block_config=reconcile_cross_block,
   )
   if overrides is not None:
     config = utils.update_dataclass(config, overrides)
   return config
 
-
-_DEFAULT_CONFIG_TYPE_DISPATCH = {
-    DefaultPipeline.EM_2D: default_em_2d,
-}
-
-
-def default(
-    default_type: DefaultPipeline, overrides: dict[str, Any] | None = None
-) -> MeshRelaxationConfig:
-  """Default mesh relaxation configuration for a given data type."""
-  return _DEFAULT_CONFIG_TYPE_DISPATCH[default_type](overrides)
+subvolume_processor.register_default_config(
+    subvolume_processor.DefaultConfigType.EM_2D,
+    MeshRelaxationConfig,
+    default_em_2d,
+)
diff --git a/processor/defaults/em_2d.py b/processor/defaults/em_2d.py
index 4eb7a83..7e91158 100644
--- a/processor/defaults/em_2d.py
+++ b/processor/defaults/em_2d.py
@@ -18,7 +18,10 @@
 
 from connectomics.common import utils
 from connectomics.volume import subvolume_processor
+from sofima import mesh as mesh_lib
 from sofima.processor import flow
+from sofima.processor import maps
+from sofima.processor import mesh
 
 
 def estimate_flow_config(
@@ -103,3 +106,109 @@ def estimate_missing_flow_config(
     flow.EstimateMissingFlow.Config,
     estimate_missing_flow_config,
 )
+
+
+def relax_mesh_config(
+    overrides: dict[str, Any] | None = None,
+) -> mesh.RelaxMesh.Config:
+  """Default mesh relaxation configuration for EM 2D data."""
+
+  config = mesh.RelaxMesh.Config(
+      output_dir='NONE',
+      integration_config=mesh_lib.IntegrationConfig(
+          dt=0.001,
+          gamma=0.0,
+          k0=0.01,
+          k=0.1,
+          stride=(40, 40),
+          num_iters=1000,
+          max_iters=100000,
+          stop_v_max=0.005,
+          dt_max=1000,
+          start_cap=0.01,
+          final_cap=10,
+          prefer_orig_order=True,
+      ),
+      mesh=None,
+      flows=[],
+      sections_to_skip=[],
+      ranges_to_skip=[],
+      mask=None,
+      block_starts=[],
+      block_ends=[],
+      backward=False,
+      mesh_min_frac=0.5,
+      mesh_max_frac=2.0,
+      coming_in=[],
+      options=mesh.MeshOptions(
+          irregular_mask_radius=5,
+      ),
+  )
+  if overrides is not None:
+    config = utils.update_dataclass(config, overrides)
+  return config
+
+
+subvolume_processor.register_default_config(
+    subvolume_processor.DefaultConfigType.EM_2D,
+    flow.EstimateFlow.Config,
+    estimate_flow_config,
+)
+
+
+def within_block_config(
+    overrides: dict[str, Any] | None = None,
+) -> mesh.RelaxMesh.Config:
+  """Default configuration for within-block mesh relaxation."""
+  config = relax_mesh_config()
+  if overrides is not None:
+    config = utils.update_dataclass(config, overrides)
+  return config
+
+
+def last_section_config(
+    overrides: dict[str, Any] | None = None,
+) -> mesh.RelaxMesh.Config:
+  """Default configuration for relaxation of last section of blockwise mesh."""
+  config = relax_mesh_config()
+  if overrides is not None:
+    config = utils.update_dataclass(config, overrides)
+  return config
+
+
+def cross_block_config(
+    overrides: dict[str, Any] | None = None,
+) -> mesh.RelaxMesh.Config:
+  """Default cross-block mesh relaxation configuration for EM 2D data."""
+  config = relax_mesh_config({
+      'integration_config': {
+          'k0': 0.001,
+          'stride': (320, 320),
+          'stop_v_max': 0.001,
+      },
+      'options': {
+          'init_state': mesh.MeshInitState.PREV_MEDIAN,
+      },
+  })
+  if overrides is not None:
+    config = utils.update_dataclass(config, overrides)
+  return config
+
+
+def default_em_2d_reconcile_config(
+    overrides: dict[str, Any] | None = None,
+) -> maps.ReconcileCrossBlockMaps.Config:
+  """Default cross-block reconciliation configuration for EM 2D data."""
+  config = maps.ReconcileCrossBlockMaps.Config(
+      cross_block='NONE',
+      cross_block_inv='NONE',
+      last_inv='NONE',
+      main_inv='NONE',
+      z_map={},
+      stride=40,
+      xy_overlap=128,
+      backward=False,
+  )
+  if overrides is not None:
+    config = utils.update_dataclass(config, overrides)
+  return config